The Effectiveness of Using Models of Cylinder and Cube in the Clay Soil Compaction Test

According to R.F. Craig (1974), soil is any uncemented or weakly cemented accumulation of mineral particles formed by the weathering of rocks, the void space between the particles containing water and/or air. According to SNI 03-1743-1989, soil compaction test with laboratory compaction method, using four methods with four molds which is different diameter. The formulation of this research problem is whether the test result of soil compaction is same if the moldthat usually use cylindrical shape turned into cube shape. This research includes comparison of standard proctor and modified proctor soil compaction result either using manual rammers or a modified compactor. Two type of moldare used, which is cylindrical moldwith 101,60 mm diameter, and cube moldwith a size of 10 x 10 cm. it is known that the standard proctor soil compaction of the collision method, the moisture content correction is 100%. Meanwhile, the correction of dry volume weight is 99,58%. In modified proctor soil compaction of collision method, the moisture content correction is 93,2882%. Meanwhile, the correction of dry volume weight is 98,8082%. In standard proctor soil compaction of the pressure method, the moisture content correction is 99,03%. Meanwhile the correction of dry volume weight is 99,27%. In modified proctor soil compaction of the pressure method, the moisture content correction is 96,07%. Meanwhile the correction dry volume weight is 98,60%