CBR Testing Machine for Field Test

]The California Bearing Ratio (CBR) field test measures the relative strength of in–situ soils and some base course materials for use in pavement design. The field test procedure uses a loading jack to force a piston into the soil at the test site and comparing the piston load to the depth of penetration.The California Bearing Ratio or CBR test is performed in construction materials laboratories to evaluate the strength of soil subgrades and base course materials.