Cbr test procedure pdf
Most early pavement design procedures were, however, based on the CBR method where the CBR values of the subgrade and structural layer material were used to determine the required thickness of imported material necessary. In Australia in , Scala developed a Dynamic Cone Penetrometer (DCP), based on an older. This test method covers the determination of the California Bearing Ratio (CBR) of pavement subgrade, subbase, and base course materials from laboratory compacted specimens. The test method is primarily intended for, but not limited to, evaluating the strength of materials having maximum particle size less than 3 / 4 in. (19 mm). Feb 25, · The California bearing ratio test is penetration test meant for the evaluation of sub-grade strength of roads and pavements. The results obtained by these tests are used with the .