Slab
Save Time, Money & Improve Safety!
Say goodbye to sunken pavement and floor slabs.
Introducing Mainmark’s Teretek®: Your Solution for Level & Stable Surfaces!
Since 1989, Mainmark has revolutionised industries reliant on stable and level surfaces with its innovative Teretek® technology.
Designed to ensure the smooth operation of equipment, vehicle movements, and foot traffic, Teretek® offers a sustainable concrete re-levelling solution. Save time and money and improve safety by effectively removing trip hazards and vehicle jolting.
Teretek® provides a comprehensive solution by seamlessly raising, re-supporting, and re-levelling surfaces with minimal disruption. Concrete is re-supported, surfaces realigned, and water ponding removed while operations continue uninterrupted.
Preferred Slab Lifting Partner
Founded in 1989, Mainmark pioneered Resin Injection technology in Australia.
Our in-house engineers bring extensive knowledge and experience to every project.
ISO Accreditation: Guaranteeing risk mitigation and operational excellence.
Award-winning global ground engineering organisation delivering the world’s most advanced, innovative, and accurate solutions.
Problems We Solve
Pumping Joints
Construction joints can allow water to infiltrate beneath the pavement, which, over time, can result in 'slab pumping', leading to the slab's loss of support and inevitable failure.
Misaligned Slabs
Misaligned or uneven floor slabs cause trip hazards and create an unsafe and rough ride for forklifts.
These issues not only jeopardise safety but also impede smooth operations.
Sunken or Dished Slabs
Sunken or dished floor slabs can significantly impact operational safety and efficiency.
These issues can lead to out-of-vertical racking and create hazards for forklift operations, compromising workplace safety and productivity.
Ponding Slabs
Leaking or burst water pipes beneath pavements can cause subsidence of supporting soils and loss of support, ultimately leading to failure.
Teretek® Injection Process
material is injected, quickly expanding to fill voids and compact loose or weak sub-grade soils.
Continued injection raises and re-supports the slab.
The treated slab sections are returned to operation immediately after the injection work.
Small holes are drilled through the slab within the treatment zone.
Teretek®
Technical
Compressive Strength
The applied density and correlated compressive strength of Teretek® materials is typically between 0.3 - 3 MPa.
Chlorobenzene Monostyrene
Petrol/Benzene Mineral Oil
Diesel Petrol
Trichloroethylene
Durability
Based on extensive research and experience of Teretek® and in combination with accelerated ageing tests comprising mechanical stresses, heat, moisture, temperature cycling, and chemical, mechanical and biological degradation, it was concluded that Teretek® materials under geological conditions will maintain their mechanical properties for well in excess of 50 years.
Environmental
Based on several environmental impact studies of Teretek® materials to soil and groundwater, it was concluded that the Teretek® materials are environmentally inert and do not generate leachate.
Chemical Resistance
The chemical resistance of Teretek® materials has been investigated by way of immersion testing. The degree of swelling has been used as a measure for the material’s chemical resistance. Teretek® materials are very stable and resistant to a broad range of chemicals often encountered within the wide range of industries served.
Ammonium Hydroxide (10%)
Ammonium Hydroxide
Sodium Hydroxide (10%)
Sodium Hydroxide
Nitric Acid
Sulphuric Acid (10%)
Hydrochloric Acid (10%)
Citric Acid (10%)
Citric Acid (50%)
Chemical resistance of the Teretek resins according to DIN 53428 and ISO 2869.
Case Studies
Floor Re-levelling
Before
Problem
A major hardware retailer in Queensland encountered significant floor settlement across approximately 5,000 m2 due to the subsidence of the supporting soils. This settlement required continuous adjustment and realignment of extensive shelving systems with the business constantly shimming and packing, negatively impacting functionality and business operations.
Solution
Mainmark was engaged to correct the issue by raising and re-levelling the floor area and restoring the shelving system back to within design specifications. The aim was to eliminate the need for shimming and ensure a flat, even floor for customers.
Execution
Mainmark executed the project with precision and efficiency. Mobilising multiple self-contained Teretek® Rigs and having the team operating exclusively during non-trading hours to ensure minimal impact on the retailer's operations. This approach also enabled routine restocking procedures to continue without stock relocation or removal.
Result
By successfully re-levelling the floor area, Mainmark restored the functionality of the hardware retailer's premises and ensured a seamless customer experience. Eliminating ongoing realignment tasks has contributed to improved operational efficiency and customer satisfaction.
Problem
A premium Australian tea producer observed the movement of warehouse floor slabs under a forklift and truck traffic loading. This instability raised safety concerns for loading and unloading operations, warehouse racking performance, and overall operational efficiency.
Solution
Mainmark's expert team assessed the situation and identified voiding beneath the floor slabs, with deflection of up to 10 mm under load. Using specially designed Teretek® material for traffic loading applications, Mainmark technicians injected the treatment zone to fill voids and restore support between the floor slabs and supporting soils. The selected Teretek® material characteristics and mechanical properties were ideal for achieving flow and minimising unwanted uplift. The treatment was efficiently completed within a single day, allowing the treated areas to return to full operation immediately without interrupting warehouse operations.
Result
By stabilising the warehouse floor, Mainmark ensured enhanced safety for loading and unloading activities, optimised warehouse racking performance, and improved overall operational efficiency.
Warehouse Floor Stabilisation
Case Studies
Roadway Stabilisation
Before After
Problem
The roadway slabs of a busy transport yard faced issues, including voiding, loss of support, and differential settlement due to subsidence of supporting soils. This subsidence, coupled with open construction joints, allowed surface water ingress, causing the roadway slabs to 'pump' with every passing vehicle. The need for a fully operational yard was urgent.
Solution
Mainmark proposed using a proprietary engineered resin injection solution, Teretek®, to address the challenges. This involved filling voids to reconfirm support, eliminating the deflection of the slabs under load, raising and relevelling the sunken sections, and remediating cracked pavement.
Result:
Mainmark efficiently completed the project in a single day, reducing both time and costs compared to traditional removal and replacement methods. The transport yard's roadway slabs were rendered safe for heavy truck traffic, ensuring uninterrupted operations and minimising disruption to the busy hub.
Forecourt Ponding
Problem
A service station in Northern NSW encountered significant settlement of 50mm within its forecourt slabs. During wet weather, this settlement caused ponding, disrupted drainage, and posed safety and operational risks, particularly as the settled slabs were positioned directly over buried bulk fuel storage tank.
Solution
Mainmark devised a comprehensive solution involving targeted Teretek® injection to re-level the forecourt slabs while ensuring safety protocols around the buried fuel tanks. Multiple Teretek® products were utilised: the first injected directly beneath the slabs to fill voids, restore support, and correct drainage gradients. The second, a more expansive product, was injected into supporting soils to enhance bearing capacity and long-term performance.
Result
Mainmark's technicians efficiently executed the forecourt re-levelling, completing the project in just three injection shifts. Despite the complexity of the solution, the station's daily operations remained largely unaffected, with minimal inconvenience to the public. The successful re-levelling mitigated safety and operational risks, ensuring the continued smooth functioning of the service station.
As a global ground engineering and asset preservation company, we draw on over three decades of experience and knowledge in leading, developing and delivering the most advanced and accurate ground improvement, re-levelling and void-filling solutions across residential, commercial, infrastructure and mining sectors.
With an extensive portfolio of completed projects across Australia, New Zealand, Japan, and the United Kingdom we have achieved a global reputation for delivering innovative solutions to some of the most iconic projects worldwide, earning us international recognition as an award-winning ground engineering organisation.
