| Summary: | The article deals with a number of topical issues connected with transport construction and environmental pollution, such as heavy metal ion pollutions of soils, preservation of natural resources, technical properties of transport construction system, and building materials’ improvement. The main aim of the study is to present new problem solutions and technologies for transport construction concerning pure substance use for lithosphere. Silica sol solution was chosen as this substance. The choice was made because of silica sol nature. Having important properties, it is the purest substance for the environment. Experimental methods were carried out. The study introduces new technologies of silica sol solution use in transport construction systems: silica sol detoxication technology (SDT) for soils, silica sol absorption technology (SAT), soil strengthening technology (SST), silica sol blocking action technology (SBT). The article shows the examples of these technologies’ application and examines new main properties of construction systems.
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