3rd RILEM International Conference on Concrete and Digital Fabrication Program 25th – 29th June 202

3rd RILEM International Conference on Concrete and Digital Fabrication

PROGRAM

25th – 29th June 2022

PREFACE A very warm welcome to Loughborough University and the third RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2022. This conference builds on the inaugural conference held at ETHZ, Zurich, Switzerland, in 2018 and the second held at TU Eindhoven, The Netherlands, in 2020. The conference series developed out of the international collaborative platform provided by the RILEM Technical Committee TC 276-DFC to support the developing global interest in digital fabrication with cement-based materials.

Alongside the Digital Concrete conference series proceedings, is an initiative to bring together leading proponents in the area to collaboratively contribute to journal articles on key topics for a special issue of Cement and Concrete Research. These articles help shape the Digital Concrete conference themes, many of these forming the basis of keynote presentations and invited lectures. This conference sees the publication of the third volume in the series.

The field is developing rapidly both in terms of research and in commercial application. Recognising the future requirements for standardised testing and quality control for 3D printed materials, RILEM has initiated two further Technical Committees TC-PFC: Performance requirements and testing of fresh printable cement-based materials, chaired by Nicolas Roussel and Dirk Lowke and TC- ADC: Assessment of Additively Manufactured Concrete Materials and Structures, chaired by Viktor Mechtcherine and Freek Bos. Both themes central to the conference and this year, Digital Concrete 2022 takes stock of just how far we have come, providing insights and a platform to debate the next steps needed to enable greater adoption of these technologies.

CCR SPECIAL ISSUES 2018

2020

2022

CONTENTS WELCOME

1

ORGANISING COMMITTEE

2

INTERNATIONAL SCIENTIFIC COMMITTEE

3

SPONSORS AND PARTNERS

4

HOST VENUE

6

CAMPUS MAP

8

KEYNOTE SPEAKERS

10

PRE-CONFERENCE PROGRAM

12

5 DAY PLAN

14

DAY 1: Monday 27th June 2022

16

DAY 2: Tuesday 28th June 2022

18

DAY 2: Poster sessions

20

DAY 3: Wednesday 29th June 2022

24

WELCOME The COVID-19 pandemic has affected us all, taking away the opportunity to meet in person. This event marks the first time in four years that the community has engaged en-masse. Recognising that we must rebuild our personal interactions the organising and scientific committees have purposely designed the technical program with space and time to meet. We have also used this moment to promote Equality, Diversity and Inclusion and embed supporting principles throughout the review, selection, keynote speaker invitation and decision-making processes. We love being stimulated by new ideas and enjoy the opportunity to debate with colleagues and we hope we have been able to deliver this aspiration.

The technical program is of exceptional quality.

The growth of interest and investment in the technology worldwide has been staggering, the community continues to grow and the level of research reaches new highs. The response to the call for contributions for the conference came from 101 organisations in 27 countries. We received over 240 abstracts, which turned into over 164 paper submissions, and around 40 extended abstracts.

Nearly 140 oral and poster presentations comprise the parallel sessions. 68 full papers will be published in the proceedings.

For ease of reference, the proceedings are divided into sections that reflect the same session groups found in the conference program. The themes on Day one, consider the state of the technology and the importance of quality control. Day two reflects on lessons learnt from the field and broadens the consideration of processes alternative to extrusion based 3D concrete printing. Day three then tackles the future and considers alternative approaches to the deployment of the positioning systems that drive digital fabrication and the big question of sustainability.

Participant interaction is central to the conference and all these topics will be debated with the whole community in the plenary ‘Paper Dart Sessions’ facilitated by experts. In addition, the poster sessions include 60 of the finest, new and most exciting work prepared for discussion that will be led by poster convenors with delegates voting for best posters.

Please be ready, engage with a smile and get the most out of the event!

Finally, we offer a huge thank-you to our sponsors and partners without which this event would not be possible: COBOD in partnership with the NEXCON project (Platinum), SIKA (Platinum), Synthomer (Silver) and Elkem (Bronze). We also acknowledge the support from our workshop sponsors HAL Robotics, the enabling support of UK Research and Innovation and our partners, the Institute of Concrete Technology.

From both the scientific and organising committees, we wish you a fantastic conference.

CONFERENCE PROCEEDINGS 2018

2020

2022

1

ORGANISING COMMITTEE

Richard Buswell Conference Chair

Jerry Xu Deputy Chair

Ana Blanco Proceedings management

Peter Kinnell Workshop and events liaison

Sergio Cavalaro Industrial liaison

Jim Dobrzanski Lab tours and logistics

John Kolewole Workshop management

Muhammad Nura Isa Poster session coordination

Dr. Renata Monte Proceedings support

Ivvy PedrosaCavalcante-P-Quintella Programme development

Eduardo QuintellaFlorencio Programme development

Liam White, Event room manager

Xingzi Liu Event room manager

Siduo Lei Event room manager

Sean Perkins Event management

Aly Howells-Chivers Delegate management

Special thanks to Danny de Becker for his role in the early planning stages for the conference, Karen Chadwick, for international visa liaison, Sarah Helmore for Finance and marketing and Stevie Ashurst for web design.

Thanks to Matt Cawrey, Esther Grammer and Clarissa Musson for branding and program design and Sue White for social event organisation. And a big thank you to all those working behind the scenes across Loughborough University and Imago, working hard to make this event possible.

2

INTERNATIONAL SCIENTIFIC COMMITTEE Chair of the Committee Nicolas Roussel Gustave Eiffel University, France

Co-chairs of the Committee Freek Bos Eindhoven University of Technology, The Netherlands Viktor Mechtcherine Dresden University of Technology, Germany Dirk Lowke Technical University of Braunschweig, Germany

Members of the committee Abdelhak Kaci CY Cergy Paris University, France Aileen Vandenberg Technical University of Braunschweig, Germany

Jay Sanjayan Swinburne University of Technology, Australia Jolien Van Der Putten Ghent University, Belgium

Alexandre Pierre CY Cergy Paris University, France

Kim Van Tittelboom Ghent University, Belgium

Ali Kazemian Louisiana State University, USA

Ksenija Vasilic DBV, German Society for Concrete and Construction Technology, Germany

Arnaud Perrot Southern Brittany University, France Asko Fromm Hochschule Wismar University of Applied Sciences, Germany Behzad Nematollahi The University of Sheffield, UK Branko Šavija Delft University of Technology, The Netherlands

Liberato Ferrara Polytechnic University of Milan, Italy Manu Santhanam Indian Institute of Technology Madras, India Mohammed Sonebi Queens University Belfast, UK Richard Buswell Loughborough University, UK

Claudiane Ouellet-Plamondon University of Quebec, Canada

Rob Wolfs Eindhoven University of Technology, The Netherlands

Costantino Menna University of Naples Federico II, Italy

Robert Flatt ETH Zurich, Switzerland

Dietmar Stephan Technical University of Berlin, Germany Domenico Asprone University of Naples Federico II, Italy

Sandra Nunes TU Delft, The Netherlands Steffen Mueller Dresden University of Technology, Germany Timothy Wangler ETH Zurich, Switzerland

Emmanuel Keita Gustave Eiffel University, France

Vítor Cunha University of Minho, Portugal

Geert De Schutter Ghent University, Belgium

Wilson Ricardo Leal da Silva Danish Technological Institute (Concrete Centre), Denmark

Gideon van Zijl Stellenbosch University, South Africa Harald Kloft Technical University of Braunschweig, Germany

Xiangming Zhou Brunel University London, UK Yamei Zhang Southeast University, China

Jacques Kruger Stellenbosch University, South Africa Jaime Mata Falcon ETH Zurich, Switzerland

3

SPONSORS AND PARTNERS

Sika develops solutions that make the construction and vehicle industries more efficient, safer, and more environmentally friendly. Real-life applications are the number one priority. Sika leads the way when it comes to 3D concrete printing technology. The Group has mastered all the process steps needed to print concrete on an industrial scale. The solution has been developed and trialled by Sika’s experts

Our mission is to disrupt the global construction industry through world class multifunctional construction robots based on 3D printing systems. Faster. Better. Cheaper.

We 3D printed Europe’s first building in 2017. The first 3-story buildings, first buildings in Africa and first wind turbine bases have been done by our 3D construction printers. We have an open-source strategy, partnering with customers, academic institutions, and suppliers around the world. HQ in Denmark, +80 highly competent pioneers from 20 nationalities.

Sponsoring in partnership with COBOD is the ‘Next-generation of 3D printed concrete structures’ project - N3XTCON (2019-2022) - developing design simulation and more sustainable reinforced concrete to industrialise 3DCP. Funded by the Danish Innovation fund.

Synthomer is one of the world’s foremost suppliers of aqueous polymers and has leadership positions in many markets. Our polymers help customers create new products and enhance the performance of existing products in key industries such as coatings, construction, textiles, paper and synthetic latex gloves. Synthomer has a global manufacturing network and broad product portfolio allowing it to serve partners around the world. Discover how our products enhance our customers’ products and processes.

4

Elkem is the world’s leading manufacturer and supplier of silica fume, having introduced Elkem Microsilica® to the market in the 1980s. Elkem now offers a unique range of silica fume products tailored for a wide range of construction applications. Elkem Microsilica® is used to achieve high-performance sustainable concretes for a wide range of applications including UHPC and 3D printing. It gives significant benefits to concrete including improved pumpability, enhanced early strength development, reduced construction times, excellent durability, and an improved finish.

HAL Robotics is a London-based software company focusing on novel applications of robotics in manufacturing, construction, and creative industries. We provide clients with robust and highly flexible solutions to program, simulate, control and monitor processes involving industrial machinery. As well as covering traditionally automated processes, we specialise in the programming of complex toolpaths, such as additive manufacturing; highly variable jobs allowing production of small batches and unique items; and applications which require adapting robot tasks from various software ecosystems.

The Institute of Concrete Technology was formed in 1972.

Full membership is open to all those who have obtained the Diploma in Advanced Concrete Technology and MSc in Advanced Concrete Technology (University of Leeds). The Institute is internationally recognised and the Diploma and MSc has world-wide acceptance as the leading qualification in concrete technology. The Institute sets high educational standards and requires its members to abide by a Code of Professional Conduct, thus enhancing the Professional Affiliate body of the UK Engineering Council.

UKRI is a non-departmental public body sponsored by the Department for Business, Energy and Industrial Strategy (BEIS). Our organisation brings together the seven disciplinary research councils, Research England, which is responsible for supporting research and knowledge exchange at higher education institutions in England, and the UK’s innovation agency, Innovate UK.

5

HOST VENUE Loughborough University Loughborough University is one of the top research-led universities in the UK with more than 19,400 students from over 135 different countries. Its main campus in Loughborough (East Midlands) is one of the largest singlecampus in the UK and has been singled out with a Green Flag Award as one of the nation’s best green spaces. The university also has an extraordinary postgraduate campus set in the heart of Queen Elizabeth Olympic Park in London.

Loughborough University is consistently in the top 7 in every UK university league table and top in its region. In 2019, it was named University of the Year by The Times.

The QS World University Subject Rankings has named Loughborough the best university in the world for sportrelated subjects for five consecutive years. Over 100 students, alumni, and Loughborough-associated athletes travelled to Tokyo to compete in the 2020 Olympic and Paralympic Games, winning 35 medals in total.

6

The results of the 2021 Research Excellence Framework (REF) published in May 2022 show that 91% of Loughborough University’s research is world-leading or internationally excellent. The results particularly underline the wide-ranging positive impacts that Loughborough’s research has on the world and the outstanding performance of our researchers in the field of the Built Environment, led by the School of Architecture, Building and Civil Engineering.

School of Architecture, Building and Civil Engineering The School of Architecture, Building and Civil Engineering is home to the 3D Concrete Printing Research Group. The school’s vision is to be the world’s leading integrated centre for built environment research and education, attending to the entire lifecycle of both buildings and infrastructure through our research and teaching.

Conference venue location The conference is located in the Edward Herbert Building (EHB) in the center of campus and occupies the atrium, bar area and rooms EHB.1.04, EHB.1.10A and EHB.1.10B.

It has a thriving community of over 60 academic staff, 40 technical and support staff and over 240 active researchers that include fellows, associates, assistants, engineers, and doctoral researchers around the world. Our diverse research community is our great strength and is key to our pursuit of research, enterprise, and educational excellence.

Our interdisciplinary ethos underpins research within the school, with colleagues undertaking research at the interface of subject boundaries or drawing upon each other’s expertise to provide new insights. Our key research areas include zero-carbon, resilient buildings, infrastructure and cities in a world under pressure from rising urban populations, ageing infrastructure, resource constraints and multiple hazards. The results of the 2021 Research Excellence Framework indicate that 93% of our research is world-leading or internationally excellent, being ranked second in the UK for research in the Built Environment.

Walking routes nearby Take time out and get some fresh air.

We ahve two lovely short walks to keep you fresh for the conference activities.

Fruit walk map

Blubell woods walk map

Sulpture trail walk

7

CAMPUS MAP MAP KEY Information point Under construction

RPE HILL

UC

THO

Students’ Union Nursery Library Hotel

34

Conference centre F SCHO

Study space

D

OL

Y

HB

AS

A RO

ATM machine Car park Bus stop

31

41

29 27

Charging point

D OA YR B H AS

D OA

R BY

WAYFINDING ROUTES

SH

A

Markers located on lamp posts across campus

21

2 51

18 17

D HBY ROA NEW AS

2

16 12 14

UNDER CONSTRUCTION

3

11A

9

Holywell Wood

5

11 Rubber Crumb

10A

Loughborough University Stadium

Holywell 1 Pitch

Holywell 2 Pitch

10 6

8 10B

7

45 24

23

13

Beach Park

Holywell 4 Football Pitch

Steve Backley National Throws Centre (Holywell 3)

43 43

26

22

Multi-storey

4

28

7

19

1A

8

42

30

Bar

M1, J23

38

31

Shop

Purple route Yellow route Orange route Green route

33

32

D

Dining room

A512

33

A5

Café

DA

32

12

AS

ROAD

HB Y

IELD

Theatre

OL

RO AD

Sir Frank Gibb Building: School of Architecture, Building and Civil Engineering PhD workshop and RILEM meetings Venue

Sport facilities

15

4E 00

125

PIN

125

AL

92

Y WA

A6 Derby

92 A60 Notts

93 91

85

87

94

84

86

A6 00

4

12 A5

AD Y RO HB AS

36

PEC Sports Turf

81

75

74

Brockington Pitches & Cricket Nets

103

107 114

105

73

L NA

106 104

70

64 50

48

46

116

63

62

65 61

54

108

68

71 53

47

72

49

115

69

67

66 60A

AY W

41

1

120

PI 4E 00 A6

77

Games Park

37

121

113 102

78

EHB Sports Turf

119

76

34 79

99 118

Haslegrave Cricket Ground

34

98

97 100

1st XV Rugby Pitch

Water Based Hockey Pitch

39

96

Ball Park & ECB Nets

82

80

AY W

95 83

35

AL IN EP

Paula Radcliffe Athletics Stadium

117

Towers Rugby Pitch

67A

To Forest Court 132

20

Outdoor Tennis Courts

60B Paddock Park and Run Trails

56

A6 00

57

59

The Holt 133

55 58

59 58

Edward Herbert Building (EHB) Conference Venue

AN TA N

RO

AD

9

4

KEYNOTE SPEAKERS

Eric Kreiger Eric Kreiger is a Research Civil Engineer at the US Army Corps of Engineers, Engineer Research and Development Center (ERDC), Construction Engineering Research Laboratory (CERL) in Champaign, IL. Mr. Kreiger is the Structural Engineering and Materials lead for ERDC’s Additive Construction (Construction Scale 3D printing) program located at CERL.

Freek Bos Freek Bos is an Assistant Professor of Concrete Structures at Eindhoven University of Technology (TU/e). He has been part of the 3D Concrete Printing (3DCP) research group since 2015. His current focus is on innovative reinforcement concepts for 3DCP, including printable SHCC and robotically introduced reinforcement elements.

He has also been involved in 3DCP construction projects, including the Cohesion pavilion in Innsbruck. Freek is deputy chair of the RILEM TC ADC (Assessment of Additively Manufactured Concrete Materials and Structures).

Guowei Ma Professor Ma is the Vice President of Hebei University of Technology, China, and an internationally recognised figure in 3D concrete printing and intelligent construction, founding four research centers/labs related to these topics. He has published five books and over 300 high quality articles in international journals and conferences and served as Associate Editor-in-Chief or Editorial Board Member of eight international journals. He holds the Guinness World Record for the longest 3D-printed bridge.

10

Kathrin Dörfler Kathrin Dörfler is an architect and researcher in the field of computational design and robotic fabrication. She co-foundied the architectural research studio dorfundrust. Her work bridges the gaps between architecture and robotics for fabrication not only in laboratory environments but directly on construction sites. Kathrin is a Tenure Track Professor at the TUM School of Engineering and Design (TUM SoED) at the Technical University of Munich, founding a research group for Digital Fabrication at the Department of Architecture.

Viktor Mechtcherine Viktor Mechtcherine is Director of the Institute for Construction Materials and Full Professor at the Technische Universität Dresden, Germany. He is Coordinator of the German Research Foundation (DFG) Priority Program SPP 2005 ‘Opus Fluidum Futurum – Rheology of reactive, multiscale, multi-phase construction materials’ and chair of RILEM Technical Committee ‘Assessment of Additively Manufactured Concrete Materials and Structures’. He is RILEM Fellow and awardee of Wason Medal for Materials Research by American Concrete Institute (ACI) and Innovation Award of the bauma 2016 Munich.

11

PRE-CONFERENCE PROGRAM PHD Workshop Saturday 25th June

Located in Room RT0.37 in the Sir Frank Gibb Building

08:45 - 09:00 09:00 - 09:50

Registration Rheology and 3D Concrete Printing – all you need to know Nicolas Rousell, Senior Researcher at Laboratoire Navier and President of RILEM • Yield stress and viscosity of cement-based materials fresh properties • Thixotropy and aging of cement-based materials fresh properties • Measurement of cement-based materials fresh properties

10:00 - 10:50

Structural failure during 3D printing – modelling for success Rob Wolfs, Assistant Professor in Structural Engineering and Design, Department of the Built Environment, Eindhoven University of Technology • Failure during 3D printing: why and how • Early age mechanical properties and how to characterize them • Mechanistic and numerical approaches to predict & prevent failure

11:00 - 11:50

How to make your materials behave using admixtures?

Robert J. Flatt, Professor of Physical Chemistry of Building Materials, ETH Zürich Timothy Wangler, Senior Researcher in the Chair of Physical Chemistry of Building Materials, ETH Zurich • Essential admixtures needed for digital fabrication of cementitious materials • Working mechanisms and potential unforeseen consequences in usage of these admixtures • Processing routes for successful implementation

12:00 - 13:00

LUNCH

13:00 - 16:30

Training Option 1: Title: Programming robots the easy way – getting started with toolpath generation for 3D printing using the HAL Robotics Framework for Grasshopper Sebastian Andraos, CEO and Co-founder of HAL Robotics

Description: • Introduction to a set of tools which can greatly simplify the programming of complex 3D printing toolpaths and allow you to concentrate on the process and part designs, rather than getting a piece of equipment to move.

• Learn how to model your robot cell with your robot, your tools and control systems • Learn how to generate complex toolpaths based on geometry, validate, and simulate them • Learn how to export and upload those programs to real machines

13:00 - 16:30

Training option 2 – How good is your print? – An introduction to metrology for 3DCP Peter Kinnell, Reader in Metrology, Wolfson School, Loughborough University

Description: • How to setup and use 3D motion caption systems to monitor the 3DCP printing process.

• How to build and use fringe projection 3D scanner to measure large concrete parts.

• How to analyse point cloud data, to extract useful measurements from 3D scans.

12

16:30 - 17:00

Training experience sharing and discussion

17:00

Session close and lab tours.

RILEM Technical Committee meetings Sunday 26th June

Located in Room RT0.37 in the Sir Frank Gibb Building

08:30 – 12:00

RILEM Technical committee meeting - PFC: Performance requirements and testing of fresh printable cement-based materials

12:00 - 13:00

LUNCH

13:00 – 16:30

RILEM Technical committee meeting - ADC: Assessment of Additively Manufactured Concrete Materials and Structures

13

PRE-CONFERENCE PROGRAM PRE CONFERENCE PROGRAM TECHNICAL COMMITTEE MEETING C PFC

09:00

10:00 PHD WORKSHOP: Lectures

11:00

RILEM TECHNICAL COMMITTEE MEETING - PFC: Performance requirements and testing of fresh printable cement-based materials

12:00 LUNCH + CONF REGISTRATION

LUNCH + CONF REGISTRATION LAB TOURS FOR THOSE ONLY IN PFC

13:00

14:00

15:00

PHD WORKSHOP: Hands on training

RILEM TECHNICAL COMMITTEE MEETING- ADC: Assessment of Additively Manufactured Concrete Materials and Structures

16:00

LAB TOURS (ABCE)

17:00

18:00

LAB TOURS (ABCE) RECEPTION (EHB - CONFERENCE VENUE)

19:00 PHD SOCIAL EVENT 14

DAY 1

DAY 2

DAY 3

WELCOME EHB1.04

WELCOME EHB1.04 KEYNOTES EHB.1.04

REGISTRATION OPEN

09:00 OPENING CEREMONY EHB 1.04

10:00

KEYNOTES EHB 1.04

KEYNOTES EHB.1.04 SPONSORS

11:00

BREAK

12:00

PARALLEL SESSIONS EHB 1.04, 1.10A AND 1.10B

13:00

LUNCH

14:00

15:00

PARALLEL SESSIONS EHB 1.04, 1.10A AND 1.10B

BREAK BREAK

POSTERS SESSION LUNCH

PARALLEL SESSIONS EHB 1.04, 1.10A AND 1.10B BREAK

INVITED PAPERS EHB 1.04

PARALLEL SESSIONS EHB 1.04, 1.10A AND 1.10B

PAPER DART SESSION EHB.1.04

BREAK

AWARDS AND ANNOUNCEMENTS EHB.1.04

BREAK

INVITED PAPERS EHB 1.04

PARALLEL SESSIONS EHB 1.04, 1.10A AND 1.10B

LUNCH

SPONSORS

16:00

PARALLEL SESSIONS EHB 1.04, 1.10A AND 1.10B

BREAK

INVITED PAPERS EHB 1.04 LAB TOURS (ABCE)

17:00

PAPER DART SESSION EHB 1.04

PAPER DART SESSION EHB.1.04

HOUSEKEEPING AND CLOSE DAY 1

HOUSEKEEPING AND CLOSE DAY 2

CLOSE

18:00 LAB TOURS

19:00

SOCIAL EVENT

15

DAY 1: Monday 27th June 2022 EHB.1.04 (Plenary room) 09:15

OPENING CEREMONY Opening by Conference – Chair: Richard Buswell Welcome by RILEM President – Nicolas Roussel Welcome by Vice Chancellor of Loughborough University – Professor Nick Jennings

09:45

KEYNOTE PRESENTATIONS: Technology status and next steps – Chair: Nicolas Roussel

09:45

Technology Readiness and conference framework – Richard Buswell, on behalf of Professor Guowei Ma

10:15

A road map for quality control of hardening and hardened printed concrete – Viktor Mechtcherine

10:45

BREAK

11.30

WET MATERIAL PROPERTY CONTROL – Chair: Mohammed Sonebi

11.30

Automated quality control for additive manufacturing by visual inspection of near nozzle droplet formation – Derk Bos, Rob Wolfs

11.45

Microfibrillated cellulose as a new approach to tune the rheological behavior of cementitious composite for 3D printing applications * – Hesam Taheri, Arnaud Perrot, Shiho Kawashima

12.00

Selected Test Methods for Assessing Fresh and Plastic-State 3D Concrete Printing Materials – John Kolawole, Danny De-Becker, Jie Xu, James Dobrzanski, Sergio Cavalaro, Richard Buswell, Simon Austin

12.15

Measuring Plastic Shrinkage and Related Cracking of 3D Printed Concretes – Viacheslav Markin, Viktor Mechtcherine

12.30

Material design and rheological behavior of sustainable cement-based materials in the context of 3D printing – Silvia Reißig, Viktor Mechtcherine

12:45

LUNCH

13:45

PRINTABILITY AND SET CONTROL: 2 – Chair: Jacques Kruger

13.45

Experimental study on elastic and creep properties of 3D printed concrete at early age * – Ze Chang, Yading Xu, Erik Schlangen, Branko Savija

14:00

A Thixotropic Model for Predicting the Buildability for 3D Printable Concrete * – Prabhat Ranjan Prem, P.S. Ambily, Swapnil Balasaheb Ghodke, Shankar Kumar

14:15

Printability assessment of cement-based materials using uniaxial compression test – Ilhame Harbouz, Ammar YAHIA, Emmanuel Rozière, Ahmed Loukili

14.30

Early age shear and tensile fracture properties of 3D printable cementitious mortar to assess printability window – Andrea Marcucci, Sriram Kompella, Francesco Lo Monte, Marinella Levi, Liberato Ferrara

14:45

BREAK

15:30

INVITED PAPERS FROM CCR SI: Quality control – Chair: Dirk Lowke

15:30

Assessing the fresh properties of printable cement-based materials: high potential tests for quality control – Nicolas Roussel, Richard Buswell, Nicolas Ducoulombier, Irina Ivanova, John Temitope Kolawole, Dirk Lowke, Viktor Mechtcherine, Romain Mesnil, Arnaud Perrot, Ursula Pott, Lex Reiter, Dietmar Stephan, Timothy Wangler, Rob Wolfs, Zuo, Wenqiang

16:00

A chemical process engineering look at digital concrete processes: critical step design, inline mixing, and scaleup – Tim Wangler, Rafael Pileggi, Seyma Gürel, Robert J. Flatt

16:30

Geometric quality assurance for 3D concrete printing and hybrid construction manufacturing using a standardised test part for benchmarking capability – Richard Buswell, JieXu, Daniel de Becker, James Dobrzanski, John Provis, John Temitope Kolawole, Peter Kinnell

17:00

PAPER DART SESSION quality for commercialisation - what do we need and how do we get there?

– Chair: Rob Wolfs

16

17:30

HOUSEKEEPING AND END OF DAY

17:45

LAB TOUR

19:00

END OF TOUR

* Extended Abstracts

EHB.1.10A (Parallel Session room) 11:30

BINDERS AND AGGREGATES: 1 - STRAIN HARDENING – Chair: Steffen Mueller

11:30

Development of Cementitious Metamaterial with Compressive Strain Hardening Characteristics – Keisuke Nishijo, Motohiro Ohno, Tetsuya Ishida

11:45

Properties of 3D-Printable Ductile Fiber-Reinforced Geopolymer Composite – Shin Hau Bong, Behzad Nematollahi, Venkatesh Naidu Nerella, Viktor Mechtcherine

12:00

Feasibility of using ultra-high ductile concrete to print hollow structure without steel – reinforcement Junhong Ye, Yiwei Weng, Jiangtao Yu, Md Nasir Uddin

12:15

Incorporation and characterization of multi-walled carbon nanotubes concrete composites for 3D printing applications – Albanela Dulaj, Monica Suijs, Theo Salet, Sandra Lucas

12:30

Consistency of mechanical properties of 3D printed strain hardening cementitious composites within one printing system – Karsten Nefs, Anne Linde Overmeier, T.A.M. Salet, A.S.J. Suiker, Erik Schlangen, B. Savija, F.P. Bos

12:45

LUNCH

13:45

HETEROGENEITIES AND DEFECTS: 1 – Chair: Daniel Weger

13:45

Digitally fabricated keyed concrete connections – Patrick Bischof, Jaime Mata-Falcón, Joris Burger, Walter Kaufmann

14:00

The environment’s effect on the interlayer bond strength of 3D printed concrete – Gerrit Moelich, JJ Janse van Rensburg, Jacques Kruger, Riaan Combrinck

14:15

Evaluation of the bond strength between 3D printed and self-compacting concrete – Michiel Bekaert, Kim Van Tittelboom, Geert De Schutter

14.30

Interlayer mechanical strengths of 3D printing geopolymers: measurement and origin * – Yuning Chen, Chao Liu, Yamei Zhang

EHB.1.10B (Parallel Session room) 11:30

PRINTABILITY AND SET CONTROL: 1 – Chair: Alexandre Pierre

11:30

Using limestone powder as a carrier for the accelerator in extrusion-based 3D concrete printing – Yaxin Tao, Karel Lesage, Kim Van Tittelboom, Yong Yuan, Geert De Schutter

11:45

A strain-based constitutive model ensuring aesthetic 3D printed concrete structures: Limiting differential settlement of filaments – Jacques Kruger, Jean-Pierre Mostert, Gideon van Zijl

12:00

Set-on demand concrete by activating encapsulated accelerator for 3D printing – Sasitharan Kanagasuntharam, Sayanthan Ramakrishnan, Jay Sanjayan

12:15

Monitoring strain using Digital Image Correlation during compressive and tensile loading: assessment of critical strain of cement-based materials containing VMA – Yohan Jacquet, Arnaud Perrot, Vincent Picandet

12:30

Temperature impact on the structural build-up of cementitious materials – experimental and modelling study – Alexander Mezhov, Annika Robens-Radermacher, Kun Zhang, Hans-Carsten Kühne, Jörg F. Unger, Wolfram Schmidt

12:45

LUNCH

13:45

REINFORCEMENT: 1 – Chair: Sergio Cavalaro

13:45

Injection 3D Concrete Printing: Integration of Structural Reinforcement * – Aileen Vandenberg, Yinan Xiao, Noor Khader, Harald Kloft, Norman Hack, Dirk Lowke

14:00

Core Winding: Force-flow oriented fibre reinforcement in Additive Manufacturing with concrete – Stefan Gantner, Philipp Rennen, Tom Rothe, Christian Hühne, Norman Hack

14:15

Fabrication of freeform reinforcement by robotic laying of carbon yarns and its combination with 3D concrete printing * – Egor Ivaniuk, Viktor Mechtcherine

14.30

Robotically placed reinforcement using the Automated Screwing Device – an application perspective for 3D concrete printing – Lauri Hass, Freek Bos

17

DAY 2: Tuesday 28th June 2022 EHB.1.04 (Plenary room) 09:00

WELCOME BACK AND HOUSEKEEPING

09:15

KEYNOTE PRESENTATIONS: Lessons learnt from the field – Chair: Viktor Mechtcherine

09:15

The Realities of Additively Manufactured Concrete Structures in Practice – Freek Bos

09:45

Expeditionary Additive Construction – Eric Kreiger

10:15

SPONSORS ADDRESS: Synthomer – Charles Bobichon

10:20

SPONSORS ADDRESS – Sika Carsten Riege

10:30

BREAK

11:00

LIGHTNING PRESENTATIONS BY POSTER CONVENORS – Chair: Wilson Leal da Silva Design, defects and durability – Liberato Ferrara Digital design and control – Normal Hack Wet material property control – Aileen Vandenburg Binders and aggregates – Behzad Nematollahi

Case studies and applications – Jean-Francios Caron

Printability and set control – Joilen Van Der Putten Reinforcement – Consantinao Menna Alternative Processes – Romain Mesnil

11:30

POSTER SESSION WITH LUNCH: See poster session programe

12:45

STRUCTRUAL DESIGN AND OPTIMISATION – Chair: Muhammad Nura Isa

12:45

Injection 3D Concrete Printing (I3DCP) Combined with Vector-based 3D Graphic Statics – Yinan Xiao, Noor Khader, Aileen Vandenberg, Dirk Lowke, Harald Kloft, Norman Hack

13:00

The production of a topology-optimized 3D-printed concrete bridge – Ticho Ooms, Gieljan Vantyghem, Yaxin Tao, Michiel Bekaert, Geert De Schutter, Kim Van Tittelboom, Wouter De Corte

13:15

Mesh Mould Prefabrication – Ammar Mirjan, Jaime Mata Falcón, Carsten Rieger, Janin Herkrath, Walter Kaufmann, Fabio Gramazio, Matthias Kohler

13:30

3DCP structures: the roadmap to standardization – Marijn Bruurs, Maartje Hoogeveen, Jolien Van Der Putten

13:45

BREAK

14:15

PARTICLE-BED BINDING – Chair: Niklas Freund

14:15

Evaluating the Effect of Methyl Cellulose on Hardened State Properties in Selective Cement Activation – Inka Mai, Friedrich Herding, Dirk Lowke

14:30

Effect of Curing in Selective Cement Activation – Friedrich Herding, Inka Mai, Dirk Lowke

14:45

Particle Bed Technique For Hempcrete – Valentine Danché, Alexandre Pierre, Khadim Ndiaye, Tien-Tung Ngo

15:00

Selective Paste Intrusion: Stability of cement paste mixtures towards changing ambient temperature – Alexander Straßer, Carla Matthäus, Daniel Weger, Thomas Kränkel, Christoph Gehlen

15:15

BREAK

16:00

SPONSORS ADDRESS: Elkem – Ahmed Khalifa

16:05

SPONSORS ADDRESS: COBOD/Nextcon – Henrik Lund-Nielsen / Wilson Leal da Silva

16:15

INVITED PAPERS FROM CCR SI: Particle-bed printing – Chair: Arnaud Perrot

16:15

Material-process interactions in particle bed 3D printing and the underlying physics – Dirk Lowke, Inka Mai, Emmanuel Keita, Arnaud Perrot, Daniel Weger, Christoph Gehlen, Friedrich Herding, Wenqiang Zuo, Nicolas Roussel

16:45

A structural fibre-reinforced cement-based composite oriented to particle bed 3D- printing systems. Case study: Parque de Castilla (Alcobendas, Madrid) Footbridge – Albert de Fuente, Ana Blanco, Eduardo Galeote, Sergio Cavalaro

18

17:15

PAPER DART SESSION: designing for digital fabrication, what will the next generation of design tools look like? – Chair: Manu Santhanam

17:45

HOUSEKEEPING

18:00

END OF DAY 2 - Evening Social Event

* Extended Abstracts

EHB.1.10A (Parallel Session room) 12:45

MATERIAL JETTING – Chair: Xiangming Zhou

12:45

Influence of material and process parameters on hardened state properties of Shotcrete 3D-printed elements – David Böhler, Inka Mai, Niklas Freund, Lukas Lachmayer, Annika Raatz, Dirk Lowke

13:00

Shotcrete 3DCP projection angle optimization: experimental approaches and theoretical modelling – Benjamin Galé, Thierry Ursenbacher, Agnès Petit, Vincent Bourquin, Aurelie FAVIER

13:15

A 3D Printing Platform for Reinforced Printed-Sprayed Concrete Components – Lex Reiter, Ana Anton, Timothy Wangler, Benjamin Dillenburger, Robert Flatt

13:30

ARCS: Automated Robotic Concrete Spraying for the fabrication of variable thickness doubly curved shells – Mishael Nuh, Robin Oval, John Orr

13:45

LUNCH

14:15

DIGITAL DESIGN, WORKFLOW AND CONTROL: 1 – Chair: Jie Xu

14:15

Filament geometry control in 3D concrete printing: printing regimes and practical design guidelines * – Rob Wolfs, Nicolas Roussel

14:30

Uncertainty quantification of concrete properties at fresh state and stability analysis of the 3D printing process by stochastic approach – Zeinab Diab, Duc Phi Do, Sébastien Rémond, Dashnor Hoxha

14:45

Influence of Infill Pattern on Reactive MgO Printed Structures – AlaEddin Douba, Palash Badjatya, Shiho Kawashima

15:00

Simulation of 3D Concrete Printing using the Discrete Element Method – Knut Krenzer, Ulrich Palzer, Steffen Müller, Viktor Mechtcherine

EHB.1.10B (Parallel Session room) 12:45

REINFORCEMENT: 2 – Chair: Lauri Hass

12:45

Integrating reinforcement with 3D Concrete Printing: Experiments and numerical modelling – Jon Spangenberg, Wilson Ricardo Leal da Silva, Md Tusher Mollah, Raphael Comminal, Thomas Juul Andersen, Henrik Stang

13:00

Preinstalled reinforcement for 3D concrete printing – Lukas Gebhard, Patrick Bischof, Ana Anton, Jaime Mata-Falcón, Benjamin Dillenburger, Walter Kaufmann

13:15

Fundamental study on automated interlayer reinforcing system with metal fiber insertion for 3D concrete printing – Tomoya Asakawa, Tomoya Nishiwaki, Kazunori Ohno, Shigeru Yokoyama, Yoshito Okada, Shotaro Kojima, Youichi Satake, Yoshihiro Miyata, Yuki Miyazawa, Youhei Ito, Hideyuki Kajita

13:30

Flow-Based Pultrusion of Anisotropic Concrete : Mechanical properties at hardened state – Léo Demont, Malo Charrier, Pierre Margerit, Nicolas Ducoulombier, Romain Mesnil, Jean-françois Caron

13:45

LUNCH

14:15

BINDERS AND AGGREGATES: 2 - AGGREGATES – Chair: Yaxin Tao

14:15

Fresh and hardened properties of 3D printable foam concrete containing porous aggregates – Kirubajiny Pasupathy, Sayanthan Ramakrishnan, Jay Sanjayan

14:30

Sustainable 3D Concrete Printing with Large-aggregates – Wilson Ricardo Leal da Silva, Martin Kaasgaard, Thomas Juul Andersen

14:45

Design and Fabrication of Spatially Graded Concrete Elements with Ice Aggregate Method – Vasily Sitnikov, Eleni Kitani, Artemis Maneka, Ena Lloret-Fritschi, Juney Lee, Benjamin Dillenburger

15:00

Mix design for a 3D-printable concrete with coarse aggregates and consideration of standardisation – Markus Taubert, Viktor Mechtcherine

19

DAY 2: Poster sessions Poster Hall 11.30

DESIGN, DEFECTS AND DURABILITY – Poster convenor: Liberato Ferrara Mechanical behavior of 3D printed hourglass shape of cementitious mortar into carrier liquid Abdeslam BENAMARA, Abdelhak KACI, Alexandre PIERRE, Yannick MELINGE

The Effects of 3D Printing on Durability of Concrete – Ella Spurina, Maris Sinka, Laura Vitola, Krists Ziemelis, Aleksandrs Korjakins, Andris Vanags, Diãna Bajãre

Drying-induced damages in fresh cement-based materials during extrusion-based additive manufacturing – Wenqiang Zuo, Emmanuel Keita, Patrick Aimedieu, Michel Bornert, Nicolas Roussel Application of X-ray micro-computed tomography for evaluations of 3D printed concrete - Pawel Sikora, Sang-Yeop Chung, Karol Federowicz, Mateusz Techman

Evaluation of the interfacial bond strength between layers in extrusion-based 3D concrete printing – Behzad Zahabizadeh, João Pereira, Claúdia Gonçalves, Vítor Cunha Factors influencing the void generation and distribution in 3D concrete printing – John Kolawole, Sultan Mahmood, Dirk Engelberg, Sergio Cavalaro, Richard Buswell, Simon Austin

Efficient structural modelling of 3d-printed structures through periodic homogenization – Romain Mesnil, Valentin Poussard, jean-françois caron, Karam Sab

Towards the Application of Mesostructures in 3D Concrete Printing – Helena Westerlind, José Hernández Vargas, Johan Silfwerbrand

Assessing the shear capacity of 3dcp box girders using destructive testing – Marijn Bruurs, Maartje Hoogeveen, Jolien Van Der Putten

Cyclic response of a 3D printed concrete shear wall made with concrete extrusion – Lucia Licciardello, Adriano Reggia, Maurizio Marchi, Giovanni Metelli, GIOVANNI PLIZZARI 12:45

START OF ORAL PARALLEL SESSIONS

11.30

DIGITAL DESIGN AND CONTROL – Poster convenor: Normal Hack A digital workflow for the design and manufacturing of 3D printed concrete bridges in a circular economy – Matthew Ferguson, Rong Yu, Rob Wolfs, Theo Salet Robotic On-Site Adaptive Thin Layer Printing: Challenges and Workflow for Design and Fabrication of Bespoke Cementitious Plasterwork at Full Architectural Scale – Selen Ercan Jenny, Daniela Mitterberger, Ena Lloret-Fritschi, Lauren Vasey, Eliott Sounigo, Ping-Hsun Tsai, Petrus AejmelaeusLindström, David Jenny, Fabio Gramazio, Matthias Kohler

Efficient voxel-based simulation of an extrusion-based 3D concrete printing process considering process and material uncertainties – Albrecht Schmidt, Luise Göbel, Tom Lahmer, Carsten Könke Compensation method based on variable flow for intersecting toolpaths – José Hernández Vargas, Helena Westerlind, Johan Silfwerbrand

Quality control of printed concrete using computer vision – Abdelhak KACI, Samir HAMACI, Ikram DARCHERIF, Rachid CHELOUAH

Inline Measurement System for Automated Quality Assurance of 3D Printed Concrete Structures – Dmitrii Sokolov, Viktor Mechtcherine 12:45

20

START OF ORAL PARALLEL SESSIONS

11.30

WET MATERIAL PROPERTY CONTROL – Poster convenor: Aileen Vandenburg Investigation of different rheological testing methods to evaluate the fresh properties of printable mortars – Hamid Bayat, Alireza Kashani Effect of nanoclay on extrudability, printability and mechanical performance of extrusion-based 3D printing mortar (3DPM) – Sandipan Kaushik, Mohammed Sonebi, Giuseppina Amato, Arnaud Perrot, Utpal Kumar Das

Towards an in-line measurement system to predict and control the quality of 3D printed concrete – Jelle Versteege, Rob Wolfs, Theo Salet Effect of polypropylene fiber content on the shape retention and strength of 3D printed concrete – Beatriz Silva, Rodrigo Santos, Ana Mayara S. Negreiros, Marcos Anjos, Leonardo Dias, Marcella Barbosa, Ulisses Bezerra

Concrete admixtures: the key element to widespread the use of locally produced concrete in 3DCP – Ramzi Farra, Kai-Steffen Weldert, Wilson Ricardo Leal da Silva, Andreas Eisenreich Evaluation of printability using cone plunger test to determine suitable material for 3D concrete printing – Yoshihiro Miyata, Tomoya Asakawa, Tomoya Nishiwaki, Yuki Miyazawa, Youhei Ito, Hideyuki Kajita In-line assessment of printable concrete dynamic yield stress by “Slugs-test” series – Léo Demont, Pierre Margerit, Malo Charrier, Romain Mesnil, jean-françois caron

Mix design insights for printable mortars based on struc-tural build-up rate requirements – Luiza Miranda, Karel Lesage, Geert De Schutter

Effects of fiber length on fiber stability of SHCC and 3D printing process – Nuoyan Xu, Ye Qian 12:45

START OF ORAL PARALLEL SESSIONS

21

POSTER SESSIONS continued...

11.30

ALTERNATIVE PROCESSES – Poster convenor: Romain Mesnil Assessment of scale up criteria of Digital Casting Systems and inline mixing process – Seyma Gürel, Timothy Wangler, Ena Lloret-Fritschi, Robert Flatt

Advantages of Two-Stage-Concrete in Scale-up of Digital Casting Systems – Seyma Gürel, Timothy Wangler, Ena Lloret-Fritschi, Robert Flatt

3D printed shell formwork for shape optimized concrete slabs – Alexander Curth, Ashley Hartwell, Tim Brodesser, Caitlin Mueller

Design, fabrication, and testing of an optimised reinforced concrete floor slab fabricated with robotically 3D printed formwork – Joris Burger, Tobias Huber, Jaime Mata-Falcón, Ena Lloret-Fritschi, Walter Kaufmann, Fabio Gramazio, Matthias Kohler

Power Floating Plastic-state Concrete for Additive Manufacturing Applications – Siduo Lei, Richard Buswell, Peter Kinnell, Sarab Dhanjal, John Kolawole, James Dobrzanski, Jie Xu

Methods of manufacturing large size wax blocks: an important puzzle piece for the industrial NonWaste-Wax-Formwork technology – Sven Jonischkies, Jeldrik Mainka, Harald Kloft, Norman Hack 12:45

START OF ORAL PARALLEL SESSIONS

11.30

PRINTABILITY AND SET CONTROL – Poster convenor: Joilen Van Der Putten Rheology and extrudability of 3D printing cement-based systems with nanoclays and viscosity modifiers – Hugo Varela, Gonzalo Barluenga, Yohan Jacquet, Arnaud Perrot Influence of sand/cement and water/cement ratio on the fresh state behavior of 3DCP mixture – Marcos Anjos, Leonardo Dias, Marcella Barbosa, Ulisses Bezerra

Outcome of shotcrete accelerators on the evolution of physicochemical properties of selfcompacting mortar used for 3DCP (3D Concrete Printing) – Atta Ur Rehman, YOUNGWOOK SHIM, Birru Bizu Melesse, Jung-Hoon Kim

Thixotropic behavior of 3D printable cement-based materials – Ilhame Harbouz, Ammar YAHIA, Emmanuel Rozière, Ahmed Loukili

Development of a Universal 3D Printable Concrete Solution – Davide Zampini, Alexandre Guerini, Jeremy Esser, Jakob Jorgensen, Zaid Marmash, Alma Bangsgaard, Henrik Lund-Nielsen 12:45

START OF ORAL PARALLEL SESSIONS

11.30

REINFORCEMENT – Poster convenor: Consantinao Menna Bond Behavior of Additive Manufactured Reinforcement Bars with Different Types of Surface Profiles – Niklas Freund, Johanna Müller, Jonas Hensel, Dirk Lowke Evaluation of Flexural Performance of Cementitious Composites Reinforced with Additively Manufactured Architected Polymeric Elements – Parsa Namakiaraghi, Robert Spragg, Yaghoob Farnam Additive manufacturing of structurally reinforced concrete elements through spraying – Bartłomiej Sawicki, Agnès Petit

Shape retention and strength of sisal fiber reinforced 3D printed concrete – Vinicius Maia, Arthur Lima, Gabrielly Nunes, Marcos Anjos, Leonardo Dias, Marcella Barbosa, Maxwel P. O. Santos Assessing the positional accuracy of robot grippers in pick and place operations for steel rebars during 3DCP process – Xingzi Liu, James Dobrzanski, Danny De Becker, Jie Xu, John Kolawole, Richard Buswell, Sergio Cavalaro 12:45

22

START OF ORAL PARALLEL SESSIONS

11.30

BINDERS AND AGGREGATES – Poster convenor: Behzad Nematollahi Comparative study of different recycled fine aggregates for 3D printing mortars – Raghed AL THIB, Mohamed Elkarim Bouarroudj, Naima Belayachi, Nicolas Courtois, Sébastien Rémond, David BULTEEL

Hempcrete - CO2 neutral wall solutions for 3D printing – Maris Sinka, Ella Spurina, Aleksandrs Korjakins, Diãna Bajãre

Effect of aggregates volume fraction on the tensile behaviour of fresh cement-based materials – Yohan Jacquet, Vincent Picandet, Arnaud Perrot

Development of a lightweight 3D printed mixture with recycled glass aggregates – Karla Cuevas, Falk Martin, Sang-Yeop Chung, Sven Pfeiffer, Pawel Sikora, Dietmar Stephan

3D-printing development of low carbon building materials – Manon Arrêteau, Aurélie Fabien, Mohammed Sonebi, Daniel Chateigner, Nassim Sebaibi

Paste content Requirement for Printing with fly ash-slag Geopolymers – Sai Kala Kondepudi, Kolluru Subramaniam, Behzad Nematollahi, Jay Sanjayan

Formulation of geopolymer based concrete for sustainable 3D printing – Corentin Le Gall, Willy Jin, Charlotte Roux, Myriam Duc, Julien Archez, Claudiane Ouellet-Plamondon, Adélaide Feraille, jean-françois caron

Rheology of alkali-activated materials made of fly ash, slag and recycled mineral wool for 3D printing – Irving Alfredo Flores Beltran, Joshua A. Dijksman, Branko Savija, Guang Ye Gelatin as biologically-based binder in temperature-sensitive printing mortar for advanced free form constructions – Julian Christ, Lisbeth M. Ottosen, Holger Koss Direct tensile behavior of 3D printed Ultra-High Performance Strain Hardening Cementitious Composites (UHP-SHCC) with 2vol% polyethylene (PE) fibers – Yan Sun, Ye Qian Influence of Printing Parameters on 3D Printing Engineered Cementitious Composites (3DP-ECC) – Wen Zhou, Yamei Zhang, Lei Ma, Victor Li 12:45

START OF ORAL PARALLEL SESSIONS

11.30

CASE STUDIES AND APPLICATIONS – Poster convenor: Jean-Francios Caron Usability of recycled gypsum powders for the formation of 3D-printed acoustic panels – Lidija Korat, Luka Škrlep, Lucija Hanžič, Mihael Ramšak

Challenges during assembly of off-site 3D printed modules for construction of single storey building – Hitesh Meena, Shantanu Bhattacherjee, Manu Santhanam Fabrication aware Modularization of Freeform Concrete Elements for Additive Formwork: An Agent-based Approach – David Stieler, Tobias Schwinn, Achim Menges Lightweight reinforced concrete slab – Georg Hansemann, Christoph Holzinger, Robert Schmid, Joshua P. Tapley, Stefan Peters, Andreas Trummer

RCAM’s Vision of 3D Concrete Printed Renewables: Progress in the Development of Renewable Energy Support Structures – Jason Cotrell, Gabriel Falzone, Mason Bell 12:45

START OF ORAL PARALLEL SESSIONS

23

DAY 3: Wednesday 29th June 2022 EHB.1.04 (Plenary room) 09:00

WELCOME BACK AND HOUSEKEEPING

09:15

KEYNOTE PRESENTATIONS: Mobile robotic positioning systems – Chair: Freek Bos

09:15

Additive Manufacturing Using Mobile Robots: Opportunities and Challenges for Building Construction – Kathrin Dorfler

09:45

Change rooms

09:55

REINFORCEMENT: 3 – Chair: Freek Bos

09:55

Integration of Mineral Impregnated Carbon Fibre (MCF) into fine 3D-printed concrete filaments – Tobias Neef, Steffen Müller, Viktor Mechtcherine

10:10

Feasibility of pre-stressing 3D-printed concrete elements using iron-based shape memory alloy bars* – Zafiris Triantafyllidis, Volha Semianiuk, Ana Anton, Mateusz Wyrzykowski, Benjamin Dillenburger, Moslem Shahverdi

10.25

Flexural behaviour of steel-reinforced topology-optimised beams fabricated by 3D concrete printing – Costantino Menna, Laura Esposito

10:40

Proof-of-concept: Sprayable SHCC Overlay Reinforcement Regime for Unreinforced 3D Printed – Concrete Structure Seung Cho, Marchant van den Heever, Jacques Kruger, Gideon van Zijl

10:55

BREAK

11:30

BINDERS AND AGGREGATES: 3 - ALTERNATIVE BINDERS – Chair: Inka Mai

11:30

Developing printable fly ash – slag geopolymer binders with Rheology modification – Anasuya Kamakshi Tippabhotla, Kolluru Subramaniam

11:45

Formulation and characterization of a low carbon impact cementitious ink for 3D printing – Estelle Hynek, David Bulteel, Antoine Urquizar, Sébastien Rémond

12:00

Strategies for reducing the environmental footprint of additive manufacturing via sprayed concrete – Aurelie Favier, Agnès Petit

12:15

Mechanical Performance of 3-D Printed Concrete Containing Fly Ash, Metakaolin and Nanoclay – Ahmed Abdalqader, Mohammed Sonebi, Marie Dedenis, Sofiane Amziane, Arnaud Perrot

12:30

Accelerating early age properties of ultra-low clinker cements for extrusion-based 3D printing – Rutendo Rusike, Michael Sataya, Alastair Marsh, Sergio Cavalaro, Chris Goodier, Susan A. Bernal, Sam Adu-Amankwah

12:45

LUNCH

13:30

INVITED PAPERS FROM CCR SI: SUSTAINABILITY – Chair: Dr. Ana Blanco

13:30

Environmental impact of extrusion-based additive manufacturing: generic model, power measurements and influence of printing resolution – Kateryna Kuzmenco, Nicolas Ducoulombier, Adélaïde Feraille, Nicolas Roussel

14:00

On Sustainability and Digital Fabrication with Concrete – Robert Flatt and Timothy Wangler

14:30

PAPER DART SESSION: 3DCP - how are we going to realise the sustainability agenda in practice?

– Chair: Nicolas Roussel

24

15:00

AWARDS AND CONFERENCE CLOSE – Chairs: Nicolas Roussel and Richard Buswell

15:30

BREAK

15:45

LAB TOURS

17:30

END OF DAY 3

EHB.1.10A (Parallel Session room) 09:55

HETEROGENEITIES AND DEFECTS: 2 – Chair: John Kolawole

09:55

Interlocking 3D printed concrete filaments through surface topology modifications for improved tensile bond strength – Jean-Pierre Mostert, Jacques Kruger

10:10

Mechanical properties and failure pattern of 3D printed hollow cylinders and wall segments under uniaxial loading – Shantanu Bhattacherjee, Smrati Jain, Manu Santhanam, G Thiruvenkatamani

10.25

Impact of drying of 3D printed cementitious pastes on their degree of hydration – Rita Ghantous, Yvette Valadez-Carranza, Steven Reese, Jason Weiss

10:40

Interlayer bonding of 3D printed limestone-calcined clay-based cementitious materials * – Yu Chen, Ze Chang, Oğuzhan Çopuroğlu, Erik Schlangen

10:55

LUNCH

11:30

ALTERNATIVE PROCESS – Chair: James Dobrzanski

11:30

Adaptive foam concrete in digital fabrication – Robert Schmid, Georg Hansemann, Michael Autischer, Joachim Juhart

11:45

Mobile Additive Manufacturing: A case study of reusable clay formworks for bespoke in situ concrete construction – Gido Dielemans, Lukas Lachmayer, Tobias Recker, Lidia Atanasova, Christian Maximilian Hechtl, Carla Matthäus, Annika Raatz, Kathrin Dörfler

12:00

Knit Casting – experiments in controlling concrete’s inflation for CNC manufactured knit formwork * – Tsz Yan Ng, Sean Ahlquist, Evgueni Filipov

12:15

Zero-Waste Production of Lightweight Concrete Structures with Water-Soluble Sand Formwork – Daria Kovaleva, Maximilian Nistler, Alexander Verl, Lucio Blandini, Werner Sobek

12:30

An early trial on milling 3D printed concrete geometries: observations and insights of the process – Jie Xu, John Kolawole, John Provis, James Dobrzanski, Peter Kinnell, Sergio Cavalaro, Weiqiang Wang, Richard Buswell

EHB.1.10B (Parallel Session room) 09:55

DIGITAL DESIGN, WORKFLOW AND CONTROL: 2 – Chair: Peter Kinnell

09:55

A closed-loop workflow for quality inspection and integrated post-processing of 3D-printed concrete elements – Norman Hack, Leon Brohmann, Markus Gerke, Mehdi Maboudi, Karam Mawas, Carsten Jantzen

10:10

Generative Structural Design: A Cross-Platform Design and Optimization Workflow for Additive Manufacturing – Saqib Aziz, JISU KIM, Dietmar Stephan, Christoph Gengnagel

10.25

Force flow compliant robotic path planning approach for reinforced concrete elements using SC3DP – Robin Dörrie, Harald Kloft

10:40

Process Control for Additive Manufacturing of Concrete Components – Lukas Lachmayer, Robin Dörrie, Harald Kloft, Annika Raatz

10:55

LUNCH

11:30

DURABILITY – Chair: Branko Savija

11:30

Influence of the print process on the durability of printed cementitious materials – Jolien Van Der Putten, Mathieu De Smet, Geert De Schutter, Kim Van Tittelboom

11:45

Two Year Exposure of 3D Printed Cementitious Columns in a High Alpine Environment – Timothy Wangler, Asel Maria Aguilar Sanchez, Ana Anton, Benjamin Dillenburger, Robert Flatt

12:00

Freeze-thaw performance of 3D printed concrete: influence of interfaces – Arnesh Das, Asel Maria Sanchez, Timothy Wangler, Robert Flatt

12:15

Salt scaling resistance of 3D printed concrete – Manu Mohan, K., A. V. Rahul, Geert De Schutter, Kim Van Tittelboom

12:30

Evaluation of durability of 3D-printed cementitious materials for potential applications in structures exposed to marine environments – Fabian Rodriguez, Cristian Garzon Lopez, Yu Wang, Jan Olek, Pablo D. Zavattieri, Jeffrey P. Youngblood, Gabriel Falzone, Jason Cotrell 25

26

WORLDWIDE CONCRETE PRINTING LEADER OPTIMISED PRINTING MATERIAL AND PRINTING PROCESS TECHNOLOGIES QUALITY

SUSTAINABILITY

PRODUCTIVITY

A consistent quality of print is obtained by monitoring and controlling the process with more than 50 sensors. A constant flow and product quality are then achieved, giving a high consistency of layer thickness.

Resource use and carbon content are minimised by utilising a printing mortar with a low carbon content and high physical performance which allows a reduction in the total amount of material required to print an object.

With a print speed of up to 1 m/s and a maximum flow rate of 2 t/h, the printing process developed by Sika is able to achieve the highest levels of productivity. A column of 3 m high can be printed in less than 20 minutes.

WORLD LEADER

3D CONSTRUCTION PRINTING SOLUTIONS

WANT TO TRANSFORM CONSTRUCTION? COBOD mission is to disrupt the global construction industry through world class multifunctional construction robots based on 3D printing systems. Faster. Better. Cheaper. We 3D printed Europe’s first building in 2017. Subsequently the first 2- and 3-story buildings in Belgium and Germany were made with our technology. Also the first villa in Dubai and the first buildings in Africa have been done by our 3D construction printers, like the first wind turbine bases. We have an open-source strategy, partnering with customers,

academic institutions, and suppliers around the world.

Our partners include GE (US), PERI (Germany), CEMEX (Mexico), Holcim (Switzerland), Dar Al Arkan (Saudi Arabia), L&T Construction (India), and JGC (Japan). Our vision is to see buildings and concrete structures in every city around the world made by multifunctional construction robots.

HQ in Denmark, +80 highly competent pioneers from 20 nationalities and truly global presence in Asia, Middle East, Africa, Europe, North, Latin, and South America.

FOLLOW US

INTERESTED TO KNOW MORE? COBOD.COM/CONTACT

1

N3XTCON N3XTCON is a Danish research and development project that aims to develop tools and methods to enable more robust, sustainable and productive 3D-printed concrete structures.

The project focuses on: 1) Introducing design strategies that enables new aesthetic designs and optimised structures with low material consumption.

2) Developing new concrete mixes with large aggregates for 3DCP with a minimized CO2footprint.

3) Developing a new digital tool to simulate the behaviour of 3DCP material; thus enabling the printing process optimisation.

4) Introducing reinforcement solutions that enable the printing of load-bearing concrete structures.

The project results are to be demonstrated via a fullscale demonstration in the beginning of 2023.

The project is funded by the Danish Innovation fund and includes key players in the Danish construction sector: Danish Technological Institute, Technical University of Denmark, University of Southern Denmark, Henning Larsen Architects A/S, Bjarke Ingels Group A/S, CRH Concrete A/S, COBOD International A/S, NCC Danmark A/S, Aalborg Portland A/S, FB Gruppen A/S, and AP Pension. www.n3xtcon.dk/

Leading global supplier of water-based polymers to the construction industry In cementitious products, our polymers bring many benefits

High flexural and compressive strength Improved adhesion and crack resistance

Our brands: AXILAT®, LIPATON®, REVACRYL®, PLEXTOL®, ROHAGIT®

Our AXILAT® additives offer an excellent match to the needs of 3D Concrete Printing: Rheology modification

Shear thinning assisting pumpability Prevent aggregate segregation in mortar inks

Cement accelerators

Build mechanical strength fast after printing Reduce swelling and shrinkage on drying

Get in touch with us at europe.construction@synthomer.com and on synthomer.com Synthomer (UK) Ltd, Central Road, Harlow, UK, CM 20 2BH

Elkem Silicon Products' state-of-the-art products and technical support ensure that you can achieve prime quality and consistency in everything you do.

Elkem is the world's leading manufacturer and supplier of silica fume, having introduced Elkem Microsilica® to the market in the 1980s. Elkem offers a unique range of silica fume products tailored for a wide range of construction applications.

Elkem Microsilica® is used to achieve high-performance sustainable concretes for a wide range of applications including UHPC and 3D printing. It gives significant benefits to concrete including improved pumpability, enhanced early strength development, reduced construction times, excellent durability, and an improved finish.

LOUGHBOROUGH UNIVERSITY ACHIEVEMENTS

UNIVERSITY OF THE YEAR FOR SPORT TIMES AND SUNDAY TIMES GOOD UNIVERSITY GUIDE 2022

UNIVERSITY OF THE YEAR WHATUNI STUDENT CHOICE AWARDS 2020

RANKED

ND*

IN ENGLAND FOR OVERALL SATISFACTION NATIONAL STUDENT SURVEY 2021 *Based on English HEIs excluding specialists, FECs and alternate providers

RANKED

10

TH

IN THE TIMES AND SUNDAY TIMES GOOD UNIVERSITY GUIDE 2022

THE COMPLETE UNIVERSITY GUIDE 2022

RANKED 7TH

32

AWARDED

SEVEN QUEEN’S ANNIVERSARY PRIZES FOR THE QUALITY OF OUR RESEARCH

£ MILLION

INVESTED IN THE ESTATE OVER THE LAST TEN YEARS

INTERNATIONAL QS STARS SCHEME 2020

5 STARS PLUS INSTITUTION ONE OF ONLY 13 WORLDWIDE

TOP

RANKED 10TH IN THE GUARDIAN LEAGUE TABLE 2022

QS WORLD UNIVERSITY RANKINGS

BY SUBJECT 2021

IN EVERY NATIONAL UNIVERSITY LEAGUE TABLE 2020/21

BEST UNIVERSITY IN THE WORLD FOR SPORTSRELATED SUBJECTS

WINNER

OUTSTANDING ENTREPRENEURIAL UNIVERSITY OF THE YEAR THE TIMES HIGHER EDUCATION AWARDS 2019

HOME TO

LOUGHBOROUGH UNIVERSITY SCIENCE AND ENTERPRISE PARK A DYNAMIC INNOVATION COMMUNITY FOR BOTH ESTABLISHED ORGANISATIONS AND START-UPS

RANKED 7TH IN THE TIMES HIGHER EDUCATION ‘TABLE OF TABLES’ 2021

33

LOUGHBOROUGH UNIVERSITY TIMELINE

1994 The University wins the first of seven Queen’s Anniversary Prizes for Higher and Further Education

1989 Her Majesty the Queen visits the University – the first royal visit in its history

1909 A Technical Institute is established in Loughborough

1915 Herbert Schofield becomes the first Principal of the Technical College

1916 The Institute begins training munitions workers for the war effort

1979 Students’ Union building opened by Monty Python’s Michael Palin and Terry Jones

1920 Newly named Loughborough College granted its own Armorial Bearings

1937 School of Athletics, Games and Physical Training created

1958 Burleigh Estate is bought by the College

1965 One of the campus’ most iconic buildings – The Towers – is opened as a hall of residence

34

1966 Loughborough College of Advanced Technology becomes Loughborough University of Technology, after being awarded a Royal Charter in recognition of its excellence and achievements to date

1996 The University is renamed Loughborough University

2017 Olympic legend Lord Sebastian Coe is named as the University’s new Chancellor

2009 The University celebrates its centenary year The Princess Royal launches the new School of Sport, Exercise and Health Sciences and officially opens its state-ofthe-art Clyde Williams building

2018 2015

Loughborough is named University of the Year in the Times and Sunday Times Good University Guide 2019

Loughborough University Science and Enterprise Park expands when the Advanced Technology Innovation Centre (ATIC) opens

2020

The National Centre for Sport and Exercise Medicine opens Loughborough University London opens

2011

2013

Work is completed on the £21 million Loughborough Design School, enhancing the University’s position as a world leader in the field of design

The University wins its seventh Queen’s Anniversary Prize for Higher and Further Education in recognition of its ground-breaking work in the area of high value manufacturing

The Studio launches, supporting graduates to develop their ideas into commercially viable products, services or social enterprises

Loughborough is named University of the Year at the 2020 Whatuni Student Choice Awards

2021 Loughborough is named best university in the world for sports-related subjects in the QS World University Subject Rankings for the fifth year running

2012 Loughborough welcomes Team GB to campus as they prepare for the London Olympic Games

Loughborough named University of the Year for Sport in the Times and Sunday Times Good University Guide 2022 Loughborough-associated athletes won 35 medals at the 2020 Olympic and Paralympic Games

35

NOTES

36

NOTES

37

NOTES

38

NOTES

39

NOTES

40

NOTES

41

NOTES

42

NOTES

43

NOTES

44