The California Bearing Ratio (CBR) test is a simple strength test which compares the bearing capacity of a material with that of a well-graded crushed stone. It is primarily intended for but not limited to evaluating the strength of cohesive materials having maximum particle sizes less than 19mm or 0.75 in. Around 1930, it was developed by the California Division of Highways and was subsequently adopted by numerous states, counties, U.S. federal agencies and internationally.
The basic CBR test involves applying load to a small penetration piston at a rate of 1.3 mm (0.05”) per minute and recording the total load at penetrations ranging from 0.64 mm (0.025 in.) up to 7.62 mm (0.300 in). The California Bearing Ratio (CBR) test is a measure of the strength of subgrade soil and highway sub base and subgrade via a penetration test. It is designed for testing cohesive materials with a particle size of less than 19mm.
Being a grade material testing equipment supplier, we provide optimum quality CBR (California Bearing Ratio) instruments in the Middle East and GCC area. The quality test apparatus is made with good grade material and advanced technology in compliance with international norms of the industry. This machine includes a load ring and dial gauge and is used to measure force and piston travel. We offer this test apparatus as per different calibration to meet the various needs of customers. Packed with quality material this ace test apparatus has a long life. It has high efficiency, hassle-free features, and longer service life.