STRENGTH IMPROVEMENT OF CLAYEY SOIL WITH CEMENT KILN DUST AND JUTE FIBER by Jugraj Singh
Soil plays very important role for obtaining the good civil engineering structure such as roads, buildings etc. because the whole structure depends upon the subgrade of soil. But mostly the problem arises due to poor soil that does not have good engineering properties. So to overcome this problems soil stabilization plays a vital role and it has become necessary before the constructions at the site. The research is done to study the impact of Jute fiber and Cement kiln Dust on soil stabilization. The soil samples were made with Jute fiber and Cement Kiln Dust at different proportions and tests were conducted. The result shows that there was improvement in engineering properties of soil. There was increase in the maximum dry density of soil as the percentages of Cement Kiln Dust were increased. With increase in proportions of CKD in the soil there was decrease in the value of optimum moisture content. The research shows decrease in the maximum dry density as the percentage of Jute fiber was increased and increase in optimum moisture content as the percentage of Jute fiber was increased. In this research different proportions of Cement Kiln Dust (5%, 10%, 15%, 20% and 25%) and Jute fiber (0.25%, 0.50%, 0.75% and 1%) were mixed in the soil and the optimum quantity was obtained after performing series of soaked California Bearing Ratio tests. The optimum quantity of Cement Kiln Dust and Jute fiber was 20% and 0.75% that was obtained in this research. After this the samples were prepared with mixture of soil, Jute fiber and Cement Kiln Dust at optimum quantity. UCS tests, CBR (soaked) tests and Compaction tests were conducted on the samples. The samples were cured for 7 days and 14 days in UCS tests. The results shows that there was increase in CBR value and maximum CBR was obtained at the 79.25 Soil + 20% Cement Kiln Dust + 0.75% Jute fiber content. The UCS value also increases with the same proportion after the curing of 7 and 14 days.