Rocking Slab Stabilisation

The ground beneath concrete slabs that make up industrial floors, roads, driveways, and parking areas are prone to settlement and compaction if subject to continuous pumping or vibration from heavy traffic or machinery. The problem results in slabs that move or bounce, often pumping out water through joints when traffic passes over the section. The movement causes hard wheeled vehicles, such as forklifts, to jolt as they pass over the joint and damage is commonly caused to machinery, the items being moved, and the concrete at slab edges. Left untreated, this will accelerate the rate of settlement and result in further damage to the concrete. If water is present beneath the slab, the wet ground will cause the substrate to continue to lose volume.

SlabJacker’s Rocking Slab Stabilisation and Joint Repair works to re-support the slab and seal joints against water entry, whilst repairing spalled concrete at joint edges and protecting from future damage.

Rocking Slab Stabilisation

The polyurethane resin SlabJacker uses to stabilise rocking slabs and prevent water entry at joints is high strength, but has a slower reaction time and expands with less force than the resins used for Slab Jacking. The slower reaction time allows the resin to spread over a larger area before it begins to rise and the reduced expansive force diminishes over-lift - this ensures voids are completely filled and continuous support is returned to the slab. The foam created has a tight structure, creating a water barrier that seals the joint from below as well as under-sealing the slab.