California Bearing Ratio (CBR) for determining Shear Strength of subgrade
California Bearing Ratio (CBR) test is a compressive nature penetration test. It was originally developed by Caltrans i.e. California Department of Transportation after World War II i.e. in the late 1930s. The test is specifically used to determine the mechanical strength as well as the potential strength of road subgrades and basecourses materials including the … Read more