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INFLUENCE OF BAUSTAB STABILIZING ADDITIVE ON CHANGES IN SOIL WATER RETENTION CAPACITY

Clay soils are the most common in the Russian Federation; they have high connectivity and strength in the dry state and low strength in the water-saturated condition. To successfully use such soils in road construction, it is necessary to change their natural properties. For these purposes, a fairly large group of additives is used – organic and inorganic-based soil stabilizers, as well as various polymer modifiers. The paper investigates the influence of the Baustab stabilizing additive ((manufactured by NPP ZIPo LLC) on the change in humidity, water-holding capacity of waterlogged soil, as well as the change in the maximum density and optimal humidity of modified soil on the example of light sandy loam. It has been found that the use of additive has little effect on changes in soil moisture over time. Despite this, the soil with Baustab additive acquires a dense texture, becomes more viscous, partially aggregates and water separation is not observed. A study of the water retention capacity from the percentage of stabilizing additives Baustab shows an increase in this indicator compared to the soil without additives in the range from 3 to 7%. In addition, the use of additives in the composition of the soil contributed to the production of a system with high compaction and mobility even at low humidity of the modified soil. The influence of the water component on the compaction of the modified soil is also insignificant. Such soil is likely to be subject to minimal subsidence and loss of strength characteristics in the autumn-spring period.