Analisis Campuran Kapur-fly Ash Dan Kapur-abu Sekam Padi Terhadap Lempung Ekspansif

Abstract

Frequently, expansive clay soil raise problem to the buildings lies on it. Concerning to this, there are many ways had be tried to resolve this expansive soil, where one of it is by stabilization using coal by product (fly ash) , rice husk and lime to repair the soil.The aims of this research is to stabilize the expansive clay soil by using the blending combination of lime (2.5%, 5%, 7.5%, 10% ) , fly ash (5%, 10%, 15%, 20%), and rice husk (5%, 10%, 15%, 20%)which were mixed with soil samples from Buyandi Village, East Bolaangmongondow Regency.In order to know its mechanical and physical properties it had be tested the combination mix of soil, lime and fly ash and the combination mix of lime and rice husk namely Atterberg Limit test, Gradation test, Spesific Gravity, Compressivve test, Direct Shear test, Standard Compaction test, and Laboratory Soaked test.Test results showed that the addition of lime and fly ash and the addition of lime and rice husk could repaired the physical and mechanical properties of soil namely: reduction of Plasticity Index , and the increasing of Internal Friction (Ø)as well as the CBR values