Question

In CBR test, the standard load is the penetration resistance of plunger into a _________

(a) standard sample of crushed stones

(b) clay

(c) saturated silt

(d) peat

I had been asked this question in examination.

The origin of the question is Flexible Pavement in section Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

The correct option is (a) standard sample of crushed stones

For explanation I would say: In California bearing ratio test, the standard load is the penetration resistance of plunger into a standard sample of aggregates. The test load is the penetration resistance of the sample that is tested.