Methods for preserving soil moisture when constructing the Earth weave
Abstract
The arid regions of Uzbekistan are characterized by an acute moisture deficit in the hot period of the year, which as practice shows, is often not considered in the construction of the subgrade. Underestimation of the low natural moisture content of soils in these areas leads to under-compaction of the embankments of the subgrade, as a result of which the quality of construction deteriorates.To increase the moisture content, the existing regulatory documents for the construction of the roadbed of roads and railways provide for moistening the soil before compaction. However, moistening is associated with high costs and labor for transporting water and its distribution in the ground. One of the promising ways to solve this issue is to compact non- moistened soils to the required density at their natural moisture content. Therefore, the issue of improving organizational and technological solutions to reduce the intensity of evaporation and maximize the use of the natural moisture of atmospheric precipitation is put forward.Summarizing the results of laboratory experiments, we can conclude that all materials used to create screens, except clay, reduce the rate of evaporation, and the greatest effect was obtained while maintaining moisture in the soil with a vapor-tight screen made of polyethylene film.