CBR Testing Machine Manufacturer,Supplier and Exporter in India
Product Code : EL-CEL-12155
Quick Answer: The CBR Testing Machine calculates the California Bearing Ratio (CBR) from a load penetration test under controlled laboratory conditions, used to assess the subgrade strength of roads and to design flexible pavements for highways and airfields.
Last updated: October 2026
Key Features
- Calculates the California Bearing Ratio from a load penetration test
- Test carried out in a controlled laboratory environment
- Helps assess the subgrade strength of roads
- Results combined with empirical curves to find pavement thickness and its component layers
- Used in designing flexible pavements for highways and airfields
About This Product
The California Bearing Ratio test compares the load needed to push a standard plunger into a soil sample with the load needed for the same penetration in a standard crushed stone, and it is a common measure of subgrade strength. The result is read against empirical design curves to find the thickness of a pavement and of each of its layers. It is therefore widely used in the design of flexible pavements for highways and airfields, and students use a CBR machine to learn how subgrade strength is tested.
Frequently Asked Questions
Q1. What does the CBR Testing Machine do?
It calculates the California Bearing Ratio with a load penetration test under a controlled laboratory environment.
Q2. What is the CBR result used for?
The test helps assess the subgrade strength of roads. Results are combined with empirical curves to find the thickness of pavement and its component layers.
Q3. Where is CBR design used?
It is widely used in the design of flexible pavement, CBR thickness for highways and airfield pavement.
Related: Civil Engineering Lab, Direct Shear Testing Machine, Compression Testing Machine, Marshall Stability Test Apparatus.
For a quotation on the CBR Testing Machine, contact School Lab Equipment India.