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Answer Posted / sengs darith
- The California Bearing Ratio (CBR) is a penetration test
for evaluation of the mechanical strength of road subgrades
and base courses. It was developed by the California
Department of Transportation in the 1930’s.
- The CBR is used for measuring the load-bearing capacity
for new pathways, road and airstrips or for soils already
underpaved areas. The harder the surface, the higher the
rating.
- CBR is a measure of resistance of material to penetration
of a plunger under controlled density and moisture
conditions.
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