Very often, the construction of the foundation begins precisely on clay soil. What is clay soil? How does it affect the construction of the foundation? Clay soil usually consists of clay and ordinary sand. Particles that are part of clay soils are usually very small.
Clay particles are so small that they are simply impossible to see without the help of special instruments and fixtures. The size of one particle of clay soil is usually up to 0.005 millimeters. Moreover, the shape of clay particles is usually scaly.
A feature of clay particles is the fact that they have very small, but very numerous capillaries. How do these capillaries affect the construction of the foundation? How capillaries affect the nature of the entire construction? The main function of capillaries is the absorption of water, the absorption of water. Thanks to the capillaries in the clay soil, there is only a lot of water. If there are a lot of capillaries in clay soil, then water will be absorbed into the soil very quickly, and then soil heaving may begin. Soil heaving is a rather dangerous phenomenon for the foundation, therefore, it is always necessary to take into account both soil heaving and the content of capillaries in clay soil. If there are relatively few capillaries in the soil, then water will be less absorbed into it, and the probability of soil heaving will not be very large.