DOI: https://doi.org/10.19184/berkalafstpt.v2i3.1285

Keywords: correlation, light weight deflectometer, california bearing ratio, dynamic cone penetrometer, base course pavement

ABSTRACT

Road pavement construction requires standard planning and evaluation of the foundation layer's structural strength. The commonly used standard is the California Bearing Ratio (CBR). In situ, road layer CBR value evaluation mainly uses a Dynamic Cone Penetrometer (DCP), Sand Cone, or direct CBR. Using these tools requires a lot of equipment, time, and human resources; therefore, more efficient and practical in situ tests such as Light Weight Deflectometer (LWD) are needed. This research was conducted to find any correlation between the results of the LWD test and the results of Field CBR and DCP testing on pavement road's base course. Data collection was carried out at River Side and Rich Village residential areas. From this research, it can be concluded that there is a significant correlation between the LWD modulus value and the 600 mm CBR DCP and the max CBR DCP conversion modulus, with an average coefficient of correlation 0.96 and 0.958.