The CBR Test, or California Bearing Ratio Test, is a penetration test used to determine the strength of subgrade soil and base materials.
In large-scale infrastructure projects like highways and railways, the strength of the subgrade soil directly impacts safety, durability, and long-term performance. This is where the CBR Test becomes a critical quality control measure. The California Bearing Ratio test is widely used to evaluate soil strength and load-bearing capacity before construction begins.


















