When working with concrete, hydrostatic pressure plays a big role. But what is it, and why is it so important to factor in?
Hydrostatic pressure (water=hydro, static=resting) is the level of pressure that standing water creates. This pressure can press onto the walls of its container, whatever that may be. Concrete, although it seems very solid when dry, is susceptible to moisture and acts as a “container” of sorts. When moisture in the form of water vapor is present in concrete, pressure can build up and affect the integrity of the concrete.
When concrete and water are mixed for the initial pour, the water eventually evaporates. This process leaves behind millions of tiny channels in the concrete. Water escapes through these channels as the concrete dries. When the concrete is dry, these channels can fill with water again. This can happen due to excessive moisture, flooding, or other sources. If the pressure builds up enough, the concrete can crack.
Flooring experts must always consider hydrostatic pressure when working with concrete, whether it’s on grade, above grade, or below grade.
[…] can penetrate a concrete slab in several ways. Sometimes, due to a ground shift, the earth under the structure shifts and […]