Indonesia Conference Directory

Soil is the foundation from a pavement construction. It is to distribute the direct load from the accepted load. Much soil cannot be used as foundation soil because a bad characteristic. The characteristic is California Bearing Ratio (CBR) and Unconfined Compressive Strenght (UCS). The way to repaire the soil characteristic by using soil stabilization. This stabilization will use roadbooster. Roadbooster is as chemical material addition to improve the clay soil properties and quality for pavement material. This research will stabilize clay soil of Tumbang Rungan with roadbooster and sand. The main parameter uses California Bearing Ratio (CBR) and Unconfined Compressive Strenght (UCS). Based on results of the clay soil test of Tumbang Rungan, the data obtained CBR original soil 7.89%, CBR immersion 0% roadbooster 76%, CBR immersion 4% roadbooster 40.85%, CBR immersion 8% roadbooster 27.08 %, UCS original ground 0,56 kg / cm2, UCS 0% roadbooster 7,30 kg / cm2, UCS 4% roadbooster 7,40 kg / cm2, and UCS 8% roadbooster 8,30 kg / cm2. From the CBR data, the highest CBR value is the time of mixing 0% roadbooster or without additional roadbooster, while the highest value of UCS lies in mixing 8% roadbooster.