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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.

Pervious concrete should be between 4 and 8 inches thick to drain water properly. Surfaces like parking lots and driveways should be at least 6 inches thick to accommodate the weight of vehicles, while patios and walkways may be poured between 4 and 6 inches thick. There’s no standard for pervious concrete thickness, but in most cases, the more weight the surface will need to hold, the thicker it should be.

If your epoxy application ended up a bit messy and left spills behind, there are several ways to clean epoxy off of a concrete floor. You can use a power washer with at least 3,000 PSI. However, it may be easier to use a scraping tool or an acidic cleaner, like vinegar, to remove unwanted epoxy. 

If the entire floor has epoxy and you want to remove just excess epoxy stains, these methods could still strip parts of the epoxy floor. Move carefully and in small areas to minimize damage, or call a pro for an expert finish.

Concrete slump can be affected by the amount of water in the mix, the size of the aggregate components, the mix’s temperature, how long the concrete is mixed, and more. Mixing concrete with the correct slump depends on almost every component of the concrete mix being correctly balanced and is critical to ensure the concrete performs as expected.