What does a higher California Bearing Ratio (CBR) indicate about an aggregate?

A higher California Bearing Ratio (CBR) signifies that an aggregate possesses greater strength and load-bearing capacity. The CBR test measures the strength of subgrade soil and base course materials, assessing how well a material can support the loads imposed on it. A higher CBR value indicates that the material can withstand heavier loads and provides better stability, making it suitable for use in road construction and other applications where robust support is necessary.

In practical terms, materials with a higher CBR are able to distribute loads more effectively, reducing deformation under stress and enhancing the overall performance of the pavement or surface constructed with that aggregate. This relationship between CBR values and material strength is vital for engineers and contractors in selecting appropriate materials for specific project requirements.