Stabilization of Laterite Soil with Several Types Of Kalimantan Sand View From The Physical And Mechanical Properties Of Soil

Abstract

Laterite soils contain relatively high clay minerals especially illite and montmorilonite, so the potential for damage is relatively large. One way to strengthen the soil that can be used is to stabilize it by using sand. Research is needed on the characteristics of the physis and mechanical properties of laterite soils before and after stabilization using several types of Kalimantan sand, namely barito river sand, Palangka sand and Liang Anggang sand after being squeezed for 3 days and 7 days. Mechanical testing carried out is Unaxial Compressive Strength Testing and Vane Shear Testing. Soil samples tested in this study were types of inorganic clay with high plasticity taken from Mount Raja, Tanah Laut Regency, South Kalimantan. Based on unaxial compressive strength testing the 7 day immersion time variation shows a significant increase in ???????? value in each mixed variation, especially native soil + 10% palm sand variation 7 days of immersion time which gets the greatest q_u value of 0.512 kg/cm2. In the vane shear test results a 7 day immersion time variation showed a significant decrease in vane shear value in each mixed variation to a 3 day squeeze variation. Making variations of the original soil mixture + 10% barito river sand 3 days of splitting time get the highest vane shear value of 118 KPa.