Strength Enhancement of Clayey Soil Using Cement Kiln Dust and Recron Fiber

Due to the fast growth of economy, construction work is very rapid in India. The removal of poor layer of ground is uneconomical. Scarcity of land forces to search new material so that bearing capacity of poor ground can be improved. Therefore, alternative method is used for the stabilization of soil. Cement kiln dust (CKD) is a waste material obtained from the cement industries. This paper presents the stabilization soil having low bearing capacity by mixing CKD and Recron fiber. CKD has pozzolanic capacities which may improve the engineering behavior of clayey soil. An experimental study was carried out by mixing CKD with soil in the ratio of 96:04, 92:08, 88:12, 84:16, and 80:20. It is found that the un-soaked California bearing ratio (CBR) increases from 6.7 to 12%. The Recron fiber also improves the soil properties of loose soil due to the reinforcing action. The inclusion of fibers in the optimum mixture of soil and CKD is in the ratio of 0.1, 0.2, 0.4, and 0.8% by weight of mixture. The CBR value increases maximum for 0.4% of Recron fiber from 12.35 to 15.67%. The stabilized soil may be used as subgrade for construction of road.