Question

In California bearing ratio test, if the pressure sustained by the specimen at 2.50 mm specimen is 3.15 kg/sqcm, then the CBR value is

Answer 1

Pressure sustained by standard

aggregates at 2.5 mm penetration = 70kg/sqcm

Pressure sustained by specimen at 2.5 mm penetration = 3.15 kg/sqcm

California bearing ratio
$=\frac{3.15}{70}\times 100$
$=4.5\%$