The California Bearing Ratio Test (CBR Test) is a penetration test developed by California State Highway Department (U.S.A.) for evaluating the bearing capacity of sub grade soil for design of flexible pavement.
Tests are carried out on natural or compacted soils in water soaked or un-soaked conditions and the results so obtained are compared with the curves of standard test to have an idea of the soil strength of the sub grade soil.
Laboratory CBR Apparatus meets the essential requirements of IS:2720 (Part XVI) with the mould as per of IS:9669. The field CBR Apparatus meets the requirements of IS:2720 (Part XXXI).
The apparatus consists of :-
The equipment consists of the following:
Test is performed as per IS:2720 (Part-XII). For measuring the swelling pressure of partially saturated soils when subjected to saturation.
The apparatus consists of :-
The unit is light weight and portable, which can be easily carried to the site.
The equipment comprises of :-
For preparation of undisturbed samples varying from 38 to 100 mm dia of different dimensions for triaxial tests.
The equipment is supplied along with 38, 50, 75 and 100mm dia specimen rings (1 no. of each ) and a hardened steel trimming knife. Suitable for 220V, 50 Hz, single Phase supply.
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