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Yes, fiber concrete can crack, and contrary to popular belief, it will crack under similar forces to rebar-reinforced concrete. The difference is in how the crack spreads through the slab. When you exert pressure on a slab, the slab flexes downward, putting tensile forces on the bottom of the slab. In rebar concrete, a crack at the bottom will also quickly appear on the top surface. In fiber concrete, the fibers hold the two sides of that bottom crack together, making it less likely for the crack to form on the top surface.

Concrete should not be poured directly over grass, as this will impede the necessary tension of the concrete. Grass and soil can draw in moisture, leading to potential cracking. For a solid, lasting foundation, the area must be flat, firm, and completely dry.

Building a concrete driveway normally takes between one and three days, including the time to cure the concrete. Wait at least seven days before driving on your driveway and two days before walking on it. Your contractor may require additional time if you need to level the ground, install a drainage system, or order special concrete materials. Installing a driveway also often requires a permit, so be sure to include this wait into your prep time as well.

To remove carpet padding glue from concrete, scrape away as much of the top layers as possible with a sharp-edged scraper or putty knife. You can be more aggressive on a concrete floor than on hardwood, so scrape off as much as possible. Then you can soak the area with hot water for a few minutes before continuing to scrape. If there is still glue left behind, use a solvent that is made to remove adhesives and apply it to the area. Then scrape the rest of the glue off.