The Effect of Diatomaceous Earth Addition on CBR Values of Glee Geunteng Soil in Aceh Besar, Aceh Province, Indonesia

The soil which is the platform often used for construction activities needs strength to resist loads. However, its physical and mechanical properties are sometimes naturally limited this implies there a need improvement stabilization. Therefore, study uses diatomaceous earth, natural pozzolanic material classified as type of Supplementary Cementing Materials (SCM), an additive. chemical stabilization was conducted by mixing with stabilizing materials such cement, lime, fly ash or others that have ability change composition combination soil. It important note earth has similar other metakaolin powder reason it expected function agent needed improve properties. This using from Glee Geunteng in Peukan Bada well obtained Lambeureunut Village, Aceh Besar Regency, Province, Indonesia. main purpose determine California Bearing Ratio (CBR) value mixed at 5, 10, 15, 20% dry weight CBR test consisted unsoaked CBR, soaked testing 4 days, swelling variety mixtures. A-6 Group Index 3 based on AASHTO classification SC (silty clay) according USCS classification. results showed reduced 35.96% 31.65% material. A trend observed reduction 15.57% 6.98%. decrease perceived be caused very small silica content (SiO2 ) 42.09% compared 86% another source previous research Hidayati.