![]() In addition, the type and size sand and aggregate used also add to the concrete’s level of absorption.Ĭement, water, and aggregate can be mixed together by hand in a tray or wheelbarrow, a motorized drum mixer or delivered by a concrete truck. As concrete dries, the space where moisture used to be leaves behind a system of pores. When water and cement mix it forms a paste that binds the ingredients together. Typically those ingredients are Portland Cement and Sand mixed with Water and an Aggregate like Gravel. Concrete Is PorousĬoncrete is made by mixing several ingredients together. Because of all these voids, concrete has a porous structure that absorbs water.Īhead we’ll discuss why concrete absorbs water in more detail along with some ways you can prevent it. The bubbles leave behind a system of small tunnels and air pockets within the concrete. During the curing process, water that was used to create the concrete evaporates from the mixture. It typically takes concrete around 28 days to harden and achieve it’s full strength. When concrete is mixed and poured it’s a semi solid. Because of all these pores, concrete can absorb and hold a lot of water. Some are only on the surface and others run deeper into the center of the concrete. It may look hard, flat and smooth to the naked eye, but there are actually thousands of pores running throughout the concrete which are created during the mixing process. The finished concrete is a porous material like a sponge. Depending on the amount of each ingredient used, and the actual ingredients themselves, you can produce a different type and strength concrete. Concrete is a man made material created by mixing varying levels of sand, cement and aggregate (gravel) with water. The reason concrete absorbs water is due to how it’s made.
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