The California Bearing Ratio test (typically known as CBR test) is an empirical test created in California, USA. It defines the relative bearing ratio and expansion characteristics under known surcharge weight of base, sub-base, and sub-grade soils for the design of pavements, roads, and runways. The CBR test is used widely in the control of sub-grades and selection of materials.

Features

Two-speed machine (BS/EN and ASTM)
Compact, bench-mounting design
Fast platen adjustment
Complete with stabilizing bar
Options for mechanical or electronic measurement