Terefil® - The Number 1 Void Filling Solution For Difficult Structural Fill Applications
Mainmark’s proprietary Terefil is an advanced structural fill material providing an excellent solution when granular fills or aggregate material options are too heavy, site access is limited, or project schedules are extremely tight.
Terefil is highly flowable, easily placed, and does not require compaction. It will fill voids and can be pumped for distances up to 1000 metres. Terefil contains a uniformly distributed cell structure encapsulated by cementitious materials creating an engineered, low density solution used across a wide range of civil, infrastructure, construction and mining projects.
Terefil can be designed to meet the project specific density and strength requirements.
Mainmark’s comprehensive range of void filling solutions includes:
- Abandon most pipes, tunnels or culverts
- Annulus fill i.e., space between pipe within a pipe.)
- Fill underground tanks and voids ( any shape or size)
- Compensation rafts
- Backfill behind retaining walls, and bridge-wing walls.
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Customised Lightweight Concrete in Action
Fast, Economical, and Structural Void Filling Solutions
Features |
Benefits |
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Lightweight | Helps to reduce pressure on soils, retaining walls, bridge approaches and slip planes. |
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Flowable and self-levelling | Terefil is able to completely fill annular spaces and mass-fill large voids (such as tanks, pipes, sinkholes and abandoned mines). |
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Rapid installation and reduced traffic congestion | Terefil can be placed at greater than 200m3 per day, and with up to 5 times fewer heavy vehicle movements required. Compared to traditional fill materials. |
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Cost-effective | Less access pits/points means significant cost savings. |
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Quality control | A reliable, consistent product. Terefil density is measured by sampling the product as it is placed and strength testing can be undertaken in the lab at 7, 14 or 28 days or as required. |
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Environmentally inert | Terefil is a cement-based product that is environmentally inert when it sets. |
How Mainmark's Terefil® Solution fills the void?
Terefil® is a lightweight, engineered void fill solution for pipes of every size.
Terefil is a specialist flowable fill material that can fill long pipelines, tunnels and culverts quickly and cost-effectively. Due to its pumpability and self-compacting properties, Terefil can fill abandoned pipes, leaving no air pockets or gaps. Unlike other fills and grouts, Terefil doesn’t release any bleed water as it sets, resulting in minimal shrinkage along the crown of the pipe.
Terefil is highly flowable. The resullt is that it travels easily through long pipes, tunnels or culverts. Mainmark have regularly filled pipes with length excess 800m.
Terefil is available in a range of strengths, densities and design.
- Abandonment of in-ground pipes, tanks, tunnels and mine shafts.
- Bridge approaches and landslip repairs.
- Backfill for swimming pools, retaining walls, and service trenchs.
- Permeable sub-grade beneath roads, major highways, airport runways, bridges, mine shafts and sporting facilities