A bright future for Hot Dip Galvanizing in the circular economy

A bright future for HDG in the circular economy

1

Earth is a community to which we belong and not a commodity for us to exploit

2

3

4

(Source: Bouke Bonnema – Tata Steel)

5

EU Policy : Drivers for circular economy

❑ ❑ ❑ ❑ ❑ ❑ ❑

world population growth + increase wealth.

EU position on critical materials Increase of building & demolition waste Environmental impact mining Depletion raw materials Responsibility for future generations (moral duty) Economic advantages

6

EU Policy : Drivers for circular economy

55

7

EU Policy: drivers for circular economy â?‘ Environmental impact mining

8

EU Policy : drivers for circular economy â?‘ Depletion raw materials

9

EU Policy : drivers for circular economy â?‘ Responsibility for future generations (moral duty)

10

EU Policy : drivers for circular economy ❑ economic advantages -

Cost reduction the EU 380‐630 billion €/year (E. MacArthur Foundation) 7 billion/year in the Netherlands (TNO) Saving 2.9 – 3.7 trillion $ in 2030 worldwide through increasing resource efficiency (McKinsey, 2011)

-

NL: 83.000 extra jobs (RABO)

11

Role of the authorities

-

initiate (through circular sourcing),

-

stimulate innovation

-

facilitate bottom�up initiatives (repairshops, etc.)

-

adapt regulation

14

Why focus on the building industry ?

-

Huge impact -> quick win

-

Construction sector represents :

▪

40% of material use

▪

50% of CO² emissions

▪

20% of water use

▪

25% of all transport

16

Building the LEGO way

17

Another way of building

-

Design flexible and adaptable buildings

-

Design in a ‘re-functionable’ way

-

Make sure that components are re-usable

-

Use resources with a high residual value (recycling instead of downcycling)

18

In practice: the 9 R’s in the circular economy

(Source: Jacqueline Kramer – Utrecht Sustainability Institute)

19

‘The steel case’ -

REDUCE: weight reduction -> material use reduction

(Source: ArcelorMittal)

20

‘The steel case’ -

REUSE

21

‘The steel case’ -

Challenges for reuse -

Availability

-

Supply chain integration

-

Traceability and certification

-

Additional time required within construction programs

-

Uncommon practice

22

‘The steel case’ -

REMANUFACTURE

23

‘The steel case’ -

RECYCLE

24

‘The steel case’

(Source: Bauke Bonnema – Tata Steel)

25

What about hot dip galvanzing?

-

REUSE -

-

-

No need for repair after demounting or remounting

-

Longer life time expectations –> frequent reuse

REPAIR -

-

Ideal coating system

Easily repairable with available techniques

RECYCLE

-

Zinc is recycled again and again with no loss in quality

-

Vs. other synthetic materials where recycling = downcycling

26

A strong case for steel and batch HDG

-

easily demountable and remountable

-

suited for designing prefabricated elements (more bolted connections)

-

the highest % of recyclability compared with concrete or wood.

-

HDG ensures low maintenance cost -> interesting for investors

-

HDG steel: very limited or no repairs required before reuse

-

HDG steel: excellent TLCC compared to painted steel.

27

Case studies 1) Grandstand Gramsbergen (2013)

28

1) Grandstand Gramsbergen (2013)

29

1) Grandstand Gramsbergen (2013)

(Source : SV Gramsbergen, Harry Haverkotte)

30

1) Grandstand Gramsbergen (2013)

31

1) Grandstand Gramsbergen (2013)

32

1) Grandstand Gramsbergen (2013)

33

1) Grandstand Gramsbergen (2013)

34

1) Grandstand Gramsbergen (2013)

35

1) Grandstand Gramsbergen (2013)

36

1) Grandstand Gramsbergen (2013)

37

1) Grandstand Gramsbergen (2013)

38

1) Grandstand Gramsbergen (2013)

39

1) Grandstand Gramsbergen (2013)

40

1) Grandstand Gramsbergen (2013)

41

1) Grandstand Gramsbergen (2013)

42

43

1) Grandstand Gramsbergen (2013)

44

Case studies 2) The Green House - Utrecht (2017)

(Source: Cepezed)

45

Case studies 2) The Green House - Utrecht (2017)

(Source: Cepezed)

46

Case studies 2) The Green House - Utrecht (2017)

(Source: Cepezed)

47

Case studies 2) The Green House - Utrecht (2017)

(Source: Cepezed)

48

Case studies 2) The Green House - Utrecht (2017)

(Source: Cepezed)

49

Case studies 2) The Green House - Utrecht (2017)

(Source: Cepezed)

50

Case studies 3) Temporary Car Park Morspoort – Leiden (2012)

(Source: Continental Car Parks)

51

Case studies 3) Temporary Car Park Morspoort – Leiden (2012)

52

Case studies 3) Temporary Car Park Morspoort – Leiden (2012)

53

Case studies 3) Temporary Car Park Morspoort – Leiden (2012)

54

Case studies 4) SEGRO Office building & warehouse

55

Case studies 4) SEGRO Office building & warehouse

56

Thank you for

Merci pour

your attention

votre attention