Comparison of the effects of different additives on the improvement of physical and mechanical properties of clayey soil
Comparison of the effects of different additives on the improvement of physical and mechanical properties of clayey soil
Bearing in mind that fine-grained clayey soils are the most sensitive to changes in moisture content, the paper presents the results of testing the effects of chemical stabilisation of clayey soils by considering a variety of chemical additives. In addition to the previously known chemical stabilisers, such as calcium carbonate and magnesium carbonate, less frequently used materials such as sodium silicate and potassium hydroxide were also considered. For each of the considered chemical stabilisers mixing was performed with three different percentages of a share of a stabiliser in the mixture with clay, in order to determine the optimal amount of a stabiliser in the mixture. Furthermore, with an aim to evaluate the durability and permanence of the effect of clay stabilisation, which is of crucial importance in geotechnical engineering, changes in the physical and mechanical properties of the treated clay were also determined in four different time intervals after the chemical treatment. Based on the results of this research, it can be concluded that different chemical stabilisers have different effects on the physical and mechanical properties of clayey soil, such as Atterberg limits and uniaxial compressive strength. The general conclusion is that the physical and mechanical properties of clayey soil can be significantly improved by applying chemical stabilisers, which opens up the possibility of applying the technique of chemical soil stabilisation in solving numerous geotechnical problems.
N. Marinkovic; E. Zlatanovic; Z. Bonic; N. Romic; D. Cvetkovic; B. Stankovic
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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