What causes sunken and/or cracked concrete?
The ground beneath your concrete slabs, flooring or foundation is affected by a variety of factors that can cause changes and movement called subsidence.
This can be due to water washouts, reactive clay soils and damage from surrounding vegetation. As the unstable ground sinks and moves, it will cause the concrete above it to crack, slump, pump and tilt.
What are the signs of sunken or cracked concrete?
Subsidence underneath your concrete can be quite obvious. At residential properties it most commonly presents as a sunken driveway and at commercial/industrial sites it can cause cracked and uneven concrete slab flooring.
You may be at risk if you’ve noticed concrete flooring or concrete slabs that:
- Appear sunken – unevenly raised/depressed
- Have cracked
- Appear tilted or you have noticed a slant walking over them
- Show movement between them and other fixed structures like railings or walls
- Very noisy(clunking) should you have forklifts traversing slabs
- Water being squished from under the slabs when traversed by vehicles
- Obvious trip hazards between slabs
- Homes built on slabs that subside result in cracked walls, sticking doors and windows
- Visible voids under the slab
If you notice signs of sunken or cracked concrete, your property may be at risk of subsidence. Not only does this compromise the integrity property but can also represent a significant trip and safety hazard to personnel as well as potential expenses on machinery maintenance.