Fixing Erosion Under Concrete Slab

Beyond that there s good solid compacted dirt supporting the slab.

Fixing erosion under concrete slab.

Can anybody recommend the best way to fill this with rocks gravel concrete etc. 1 855 752 2522 uses an expanding polymer foam injected under the concrete that fills voids and if necessary raises you re settled concrete back to the proper grade. The void is completely filled in at this point. For areas of the slab that have settled significantly a process known as slabjacking might be useful.

The erosion only extends about 6 14 inches from left to right underneath the slab. Turn off the pump and remove the hose once the fill material has reached the level of the concrete slab. With slabjacking a stable grout mixture is injected beneath the surface filling the voids and reestablishing the strength your slab needs to last for ages. Filling hollows under a concrete floor is done through a process called slabjacking.

Foam injection is a solution similar to mud jacking but instead of dirt and cement you force polyurethane foam under the slab. Concrete is a very heavy material in addition to being unable to generate any upward pressure on the slab the added burden on the soil often speeds settling. To keep it from eroding further and give some support to this area of the driveway. The foam is a two part product and when you combine the parts it quickly expands and solidifies creating enough upward pressure in the process to level the slab.

There are no structural issues cracks etc above this area. If your patio causes erosion then taking several. But even more importantly if weak soil caused the slab to sink the soil may compress again under the weight of the new slab. Slabjacking is used to prevent everything from porch floors to patios and basement floors from shifting.

In some cases it is more economical to underpin the foundation with mechanical supports such as helical piers or driven steel pins. Patios don t tend to drain well instead producing runoff and therefore sometimes posing a significant soil erosion problem in home landscapes. You can affordably repair erosion under concrete once and for all. Mix a small batch of concrete mortar and fill in the holes leveling the mortar to the surface of the slab using a trowel.