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Learn how to perform the California Bearing Ratio (CBR) test to evaluate the strength of soil subgrades and base course materials for pavement design. Compare different CBR test methods, procedures and standards, and understand the importance of CBR values for engineering projects.
The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction. The ratio is measured using a standardized penetration test first developed by the California Division of Highways for highway engineering.
Learn how to perform the California bearing ratio test on soil specimens to measure their strength and resistance to penetration. Find out the required equipment, test procedure, calculation method and applications of the CBR test.
Learn how to perform and interpret the CBR test for evaluating the strength and stability of soil subgrade and pavement materials. Find out the CBR values, design curves, and pavement thickness formula for different traffic and wheel loads.
Learn how to conduct California Bearing Ratio (CBR) test on subgrade soil for flexible pavements. Find out the standard load values, observations, and results of CBR test with examples and diagrams.
Learn about the CBR test, a simple strength test for cohesive materials with maximum particle sizes less than 19 mm. Find typical values, equation, and standard test methods for CBR.
Feb 12, 2024 · California Bearing Ratio (CBR) is a crucial parameter in geotechnical engineering used to evaluate the mechanical strength and load-bearing capacity of soil.
