ABSTRACT
Expansive soil is one of the global problems in the field of construction. In the United States, the estimated cost of damage to buildings and infrastructure due to expansive soils reaches $ 15 million per year (Far & Flint, 2016). While in the hamlet Jatiluhur, Glagahagung village, District Purwoharjo, Banyuwangi district expansive soils much damage the walls and floors of residences. Damage caused by this type of soil has high shrunken properties. In order to reduce these properties stabilization needs to be done. Stabilization in this research uses sand as the stabilizer. The addition of sand aims to reduce the ratio of clay cohesion properties, increase density values, reduce the potential for soil development and reduce soil permeability. The sand content used for stabilization is 15%, 20%, 25%, 30% and 35%. From the test results obtained the original soil has a liquid limit of 90.86%, plastic limit of 36.97% and plasticity index of 53.89%. Under the USCS classification system, the original soil belongs to the category of high plastic clay soil. From several classifications of the expansive soil development potential, the original soil is included in the ground with a high level of development. While the result of mixed soil testing is found that the greater the level of sand can reduce the properties of plasticity, moisture content, and soil development.
