California Bearing Ratio Machine

A CBR (California Bearing Ratio) machine is a testing device used to evaluate the strength and load-bearing capacity of soil and subgrade materials for road and pavement design. Key Features: Measures Soil Strength: Determines soil bearing capacity essential for pavement thickness design Standardized Test: Conducts CBR tests as per ASTM, AASHTO, or other standards Load Application: Uses a loading frame to apply controlled pressure on the soil sample Penetration Measurement: Records resistance at specific depths (usually 2.5 mm and 5 mm) Data Output: Provides CBR values used to assess soil suitability for construction Durable Construction: Built to withstand repeated testing in labs and field settings Easy Operation: Includes dial gauges or digital readouts for precise measurement