Saturday, November 8, 2008

Step on a crack, break your mother's back!

It wouldn't be too hard to do on our driveway! :) I posted a few weeks ago about one of our new projects being the repairing of cracks in our driveway. Jeff's been working hard on it! First, he has to take a concrete saw and cut the cracks--widen them and clean them up. Then he painted a primer inside the cracks that will make new cement (called "patchcrete") bond to the old cement. Next a "rope" made of foam goes down in the bottom of the cracks. Then they get filled with the patchcrete. Once the patchcrete is hard enough to cut, you actually re-cut the cracks, only now they are nice and clean cuts. This allows for expansion and contraction of the cement along these new cuts, and will keep the driveway from getting new cracks. After re-cutting the patchcrete, these new cuts are filled with a self-leveling polyurethane-type of filler that seals the crack but moves with the cement as it expands and contracts with the changing seasons.

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