Engineering Properties Investigation of Soft Clay as Potential Subgrade Material

Highway pavement design using soft clay soil as a subgrade is always great challenge and can cause problems such roadbed instability settlement. To overcome this problem, the knowledge of characteristic should be studied first because it needs to considered during phase pavement. This study was conducted investigate engineering properties that used potential material. Some laboratory tests were performed establish clay. From standard proctor compaction test, results revealed maximum dry density optimum moisture content are 1.58 Mg/m3 20.15 %, respectively. The finding from soil-water curve (SWCC) test indicates SWCC did not present residual suction. compression modulus pre-consolidation pressure obtained compacted sample for consolidation higher than undisturbed sample. Based on triaxial results, effective cohesion acquired greater research provides reference characteristics.