Broken Off Floor With Rebar

A stem wall can be several inches to several feet above ground.

Broken off floor with rebar. Remove broken or loose concrete. It is only right at the entrance edges. This will prevent the dry existing concrete from pulling the moisture from the repair material too quickly which weakens the bond. Once the loose and unstable concrete has been removed dampen the repair area with water.

They will consider the existing slab structurally sound and just pour the new slab as if they were pouring over a gravel base. There s no generally accepted rule of thumb as to how to space rebar in a concrete slab. Aug 23 2019 explore jeri landers s board broken concrete followed by 371 people on pinterest. However most contractor will simply come out and place a rebar mesh on small pedestals above the existing floor and then pour enough concrete to level the area and cover the rebar mesh.

The stem wall is the exposed concrete when the footer of the foundation was installed beneath the ground. If yours is older than that it may be time to seriously consider a garage floor replacement. For building footings i would use a 5 5 8 inch rebar. Where my garage floor meets the block walls where the garage door comes down about 1 by 6 of the concrete has broken off exposing the rebar.

Chunks of concrete popping or falling off generally occurs because of. A homeowner may notice cracks in the stem wall of his home foundation. Concrete was broken off the channel floor at the spillway terminus. See more ideas about broken concrete outdoor gardens backyard.

The concrete being hit by a hard metal object with a lot of force. Garage floor surfaces should provide approximately 20 25 years of use. Forces of rusting rebar pushing against the concrete as we have noted rusting rebar exerts tremendous pressure against the concrete which may cause cracks or pieces of the concrete to break loose. This may require chiseling out any concrete pieces that feel or appear to be loose or unstable.

There are many variables that influence the decision of how much space to leave including the maximum load the slab is likely to have to support the bearing capacity of the soil the diameter of the reinforcing rebar the likelihood of frost heaving the slab and whether or not the slab is on a level grade. A poorly installed garage floor surface might be another reason your garage floor has seen better days. Mechanical damage i e. Rebar should be placed evenly throughout the project.

For a flat slab such as a driveway consider placing the rebar in an 18 inch grid spacing keeping the edge rebar at the same distance from each side. I can get all of the broken pieces out pack more sand or shaved chipped rock into the hole. Rebar is used to reinforce the strength of the foundation.