Why Does Concrete Crack

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jon bird after walkWhen we buy a house whether it is new or old we all have the intentions of things going in the right direction for us. Everything is going to work awesome and our dreams have come true in the coveted American dream of becoming a homeowner. One day we wake up and are backing out of the driveway to head to work and we notice a crack in the driveway! This along with any minor or major repair is annoying. We would all much rather spend our money on fun stuff like travel or entertainment. Concrete is way down the list for most of us to want to spend money on. Cracking unfortunately is quite common with concrete though. Two
things to consider are that concrete doesn’t bend, and concrete is only as good as the material underneath it. When your concrete is placed it is a good business practice to prepare the ground as well as possible ensuring that it is stable and will not settle in the jon bird before walkfuture. Another good business practice is when your concrete finisher is finishing your concrete that he puts joints in the concrete where it has the greatest chance of cracking (concrete guys know where these areas are). That way when the concrete is under pressure it will crack in the right areas. Now that the concrete is cracked (hopefully in the joint) all we need to do is go in and fill  the cracks with SikaFlex so that we can stop moisture from getting in and expanding the crack even larger. Living in a freeze/thaw cycle environment (Utah) when concrete cracks moisture can get into the crack and freeze in the winter and expand the concrete causing it to shift and grow. the cracks can also allow water to get into the soils underneath the slab and create soft spots and settle giving the slab little to no support which can also lead to more cracking and settling. When this happens we recommend lifting the concrete, filling the voids, and sealing cracks and joints to keep the moisture out. We love polyurethane foam for this reason because it does spread out so well once it is injected as a liquid and chemically reacts into a foam that is light but strong to support the slab.