Filling Large Voids In Concrete

A slabjacking pump is.

Filling large voids in concrete.

How to fill voids under a concrete slab. Careful preparation and methodical practices can eliminate even the worst of surface voids. Connect a hose to a slabjacking pump then run the hose to the holes leading to the void. This is a means of filling voids underneath concrete slabs by injecting pumping filler materials into the defective areas.

Wetting the edges with a modified thinset slurry. It may become necessary to use a finishing trowel and apply pressure to fill some of the voids. The guys at home depot had a lot of fun lamenting the fact that the hole existed to begin with and then suggested that i build a mold on one side of the wall and fill it in with a pour of concrete. How to fill voids under a concrete slab step 1.

There are several ways to fill material under a concrete slab and remove voids. How to eliminate voids in a concrete casting. This step will aid in pushing the material into the voids and will also smooth the surface of the repair area. Drill at least four holes through the slab at a point that s centered on the void beneath.

While many variables must be considered in the elimination of surface voids or bug holes in concrete castings there are a number of precautions that can remedy this unsightly problem. Immediate replacement of settled concrete or concrete with voids is not a good choice as settling is not yet complete. Drilling in 10mm rebar in a 12 x 12 grid and tieing. Cheng pro formula acrylic slurry is ideal for quickly and easily filling both small and large voids that appear after polishing or after releasing concrete from the mold.

Geo polymer void filling is the best method we currently have for void filling but it cannot affect deeper layers of un compacted fill so you are left with supporting and densifying through polymer injection. Filling the large void with 3 4 roadcrush and tamping it in with a plate tamper to bring the grade up to the underside of the slab. The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height. Use a drill equipped.

With a gel like consistency this fast acting slurry can also be used to fill voids and make repairs on vertical surfaces. After the geolift has done its magical work the last thing left to do is patching up the holes. After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day.