Test Method Title
Standard Test Method for CBR (California Bearing Ratio) of Soils in Place
Reference Number
ASTM D4429
Material
Field Soil
Test Property
Field CBR value
Description of Test
Field measurement of California Bearing Ratio (CBR) of a soil is made by comparing the penetration load of the soil to that of a standard material. This method covers the evaluation of the relative quality of subgrade soils but is applicable to subbase and some base-coarse materials.
Number of Test Specimens
project specific
Test Specimen Size
10 inch diameter
Keywords
Bearing, California, Field CBR, Pavement Design, Ratio