Industrial Solutions

Using proprietary materials and specialised polyurethane resin injection techniques, we can re-support, raise and relevel complex structures and sinking concrete (sometimes referred to as slabjacking).

Raise and Relevel primarily uses three polyurethane resin injection techniques as follows;

1. Deep Injection – application of tailored polyurethane resins at predetermined depths to dynamically compact the ground and improve bearing capacity (also known as underpinning) and/or void fill/sinkhole repair.   
2. Deep Lift – the injection of proprietary resin (R+R FX) under structural foundations & footing to expand the ground and raise and relevel structures.
3. Slab Lifting – also known as slab jacking, involves the injection of proprietary resin (R+R SX) beneath sinking concrete slabs to Raise and Relevel them.

Underground void filling, sinkholes and abandonment grouting of in-ground services using specialised resins or cementitious grouts is another area of expertise for Raise & Relevel.

Depending on specific project considerations (e.g. volume, depth, ground conditions, environmental impact), we tailor our equipment and materials for the client’s requirements. We use specialised polyol resins, epoxies, phenolics, acrylics, vinyl esters, cementitious grouts or hybrid materials. 

Sinkholes are sometimes a natural phenomenon whereby water erosion occurs below ground creating a void that collapses in. Most commonly, however, sinkholes occur in mine subsidence affected areas, particularly around Newcastle to the North of Sydney and Wollongong to the south in New South Wales. Sinkholes can also be caused by defective underground services (e.g. high-pressure water mains) which washout underground voids that collapse.

The void filling is normally related to the construction of a building or underground services. The void filling includes underfloor voids, culverts, pipelines etc. that need to be filled to either provide structural support and reduce or eliminate subsidence. The void filling is also used to prevent vermin from getting into voids and/or provide safety by not enabling people to enter the void.