Repair for collapsed garage floor
I bought a house a few years ago (construction – 1968). I noticed a crack in the garage that had been patched with new concrete. The patch was now falling apart, so I decided to dig it out to make a new repair. Lo and behold, I found out that the fix was attempting to level a part of the garage floor that had collapse (see picture)
The crack is very large and I can touch the soil under. There seems to be a void under the slab that hasn’t collapsed. I think the soil might have eroded as a result of chipmunks digging in that part of the foundation and the old owner who discharge downspout water directly at the foundation wall.
To repair this, I’m thinking of filling the large crack with sand all the way to 1/2 inch of the base slab. Then, I will recoat with sand mixed cement. I think my repair should be better than the last one because the previous repair did not fill the large crack and merely “coated” the crack with concrete.
Thanks a million!
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