PENGARUH TRAS TERHADAP PARAMETER KUAT GESER TANAH LEMPUNG
Abstract
The previous study result showed that soil from Tanon Sragen is categorized as water-sensitive
inorganic clay which has high plasticity index and contain montmorillonite mineral dominantly. This kind of
soil is not reliable for construction foundation. .Therefore, its physic and mechanic characteristic should be
improved using stabilization method in order to make the soil more reliable for construction foundation. The
method of improvement is conducted by mixing the soil with stabilization material by adding tras percentage,
i.e. 0%; 2,5%; 5%; 7,5%; and 10%, with 3-days treatment. Changes in physic and mechanic characteristics of
mixed soil and tras can be seen by conducting consistency limit test, gradation test, specific gravity test, and
unconsolidated-undrained (UU) triaxial test. The result shows that tras adding with 3-days treatment can
improve the soil physic and mechanic characteristic, such as reduce soil plasticity, increase value, and reduce
soil cohesiveness value (c).