How To Fix Erosion Under Concrete

This is a means of filling voids underneath concrete slabs by injecting pumping filler materials into the defective areas.

How to fix erosion under concrete.

Mix the concrete to a thicker consistency. Then back fill a little bit with soil. Erosion under concrete is serious whether it s your foundation driveway patio or sidewalk that s affected. It looks like the problem is just that it was poured on top of the ground instead of being dug out a few inches and then being back filled after.

Fill the hole with concrete. Recommendations for installing downspouts state that they should channel water 5 to 10 feet from the base of the building. How to fill voids under a concrete 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.

So the concrete is buried by a few inches. Drill at least four holes through the slab at a point that s centered on the void beneath. Once it hardens use some soil around the low spots and slope it away from the steps packing it down firmly. Use an ax handle or whatever and pack it up in there.

There are several conventional and alternative void filling materials which can be employed to achieve a similar effect. Concrete doesn t expand in the cold you re probably thinking of frost heave which is where moisture in the soil freezes and expands disturbing whatever s above it. Connect a hose to a slabjacking pump then run the hose to the holes leading to the void. Use a hoe or fabricate a pushing stick and stuff the concrete into the crevice.

These simple methods can help you revitalize your soil repair damaged areas and prevent soil erosion in the future. It s imperative to fix erosion under concrete as soon as possible but first you need to know what to look for. Mulching makes use of organic materials to do just this while adding nutrients back into the soil. Smooth it out on the outside.

Properly installed gutters and downspouts will effectively channel rainwater away from building foundations thereby minimizing erosion under concrete slab foundations. Shrub and tree roots excel in preventing erosion way better than grass roots. Use a drill equipped with a masonry bit to bore. To repair you ll need a form.

If your sidewalk hasn t heaved by now then the addition of new concrete below it isn t going to change anything. I would suggest packing dirt rock under as well as you can. 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.