Filling Large Voids In Concrete

Continue this process filling the crack and repair area.

Filling large voids in concrete.

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

How to fill voids under a concrete slab. 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. How to fill voids under a concrete slab step 1. A slabjacking pump is.

Wetting the edges with a modified thinset slurry. After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day. It may become necessary to use a finishing trowel and apply pressure to fill some of the voids. Use a drill equipped.

Undercutting around the perimeter to expose the edges of the actual slab. Drilling in 10mm rebar in a 12 x 12 grid and tieing. Careful preparation and methodical practices can eliminate even the worst of surface voids. Patch up the holes with concrete and your new driveway or sidewalk or walkway will look good as new.

Connect a hose to a slabjacking pump then run the hose to the holes leading to the void. With a gel like consistency this fast acting slurry can also be used to fill voids and make repairs on vertical surfaces. Immediate replacement of settled concrete or concrete with voids is not a good choice as settling is not yet complete. The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height.

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