Effect of Feldspar on the Properties of Swelling, Shrinkage and Bearing Capacity of Expansive Clay Soil
Journal Title: Invention Journal of Research Technology in Engineering & Management - Year 2019, Vol 3, Issue 5
Abstract
Expansive soil is a kind of soil to have high potential for swelling and shrinkage where it has low bearing capacity. On the pavement that laid over the expamsive soil, the uneveness of upward movement caused swelling that it potentially damaged to the road. This study aimed at minimizing the potential of swellimg and shrinkage, while at the same time improving the bearing capacity of the subgrade expansive clay soil through stabilization using the Feldspar, a group rock-forming tectosilicate minerals that made up about 41% of the earth’s continental crust by weight. 5 to 30% of Feldspar with increment of 5% by weight of the soil were added. Atterberg Limit, Direct Shear, and California Bearing Ratio (CBR) test were conducted. Result in Atterberg Limit test showed that the adding of Feldspar to 30% in the expansive soil did not indicate reduction in thr swelling potential. Potential for swelling become zero only if was Feldspar content added to 55% by weight of the expansive soil. However, the results in Direct Shear and CBR tests indicated that the bearing capacity of the expansive soil improved as a result in the increasing of Feldspar content in the soil. With reference to the result in the study, it could be inferred that Fldspar was feasible and had the potential to be stabilizing materials for expansive clay soil
Authors and Affiliations
Gatot Rusbintardjo
Keywords
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