THE USE OF SALT AS CLAY SOIL STABILIZATION AGENT IN CENTRAL KALIMANTAN

A building structure is built on the ground. Therefore, it needs to know the properties of soil in order the plan of building structure can be performed well. The commonly soil properties is CBR. The higher the scores of CBR the better of soil properties. Clay soil generally has low scores of CBR. The attempts to improve the original of clay have been conducted, such with soil stabilization. One of the clay stabilization materials is salt. The purpose of the particular research was to know the scores of CBR clay soil in Central Kalimantan before and after stabilized using salt. Clay soil samples were taken from six regencies in Central Kalimantan. The clay soil tests performed was CBR test before and after the stabilization with salt. The planned salt mixtures were 5, 10, 15, 20, 25% and 30% toward the dried content of clay soil. The results of the study showed the original soil of CBR score ranges from 3.90% to 4.75%. Then, after stabilization 5% to 15%, the score of CBR tends to rise of 5% to 9%. Concluded, the CBR score has reached the maximum score with salt addition 10% to15% of the weight of the soil