INVESTIGATION OF CBR-VALUES OF GRANULAR SUB BASE IN VARIOUS DEGREE OF SATURATION (DOS)

The impact of the Degree Saturation (DOS) on granular Sub Base material was investigated in this study. Seven numbers CBR (California Bearing Ratio) samples were fabricated at 95% compaction according to Standard Australian, AS 1289.6.1.1. These prepared against targeted moisture variation between DOS 50% and 70%. In particular, laboratory through proper gradation with optimum content (OMC) appropriate mechanical compaction. Afterward, dried back further soaked achieve target DOS. tests executed assess variations strength interpret effect results demonstrated that bearing capacity escalated gradually increase until it reached 56%, which corresponding OMC. Conversely, declined substantially increment study elaborated can be decreased beyond OMC level could also diminish pavement performance, including durability, lead moisture-related damage flexible pavement.