: 2270 (PART-XVI)
The C.B.R. Method isused for finding the relative bearing ratio and expansion characteristics ofsoil of base, sub-base and sub-grade for the design of roads, pavements andrunways.
Test can be made onall types of soils including sand, gravel, crushed stone etc. (Passing through20mm IS sieve) C.B.R. test is used extensively for selection of materials andcontrol of sub-grades. The procedure of test is very simple. A 50mm dia.penetration piston is forced in the test soil and loads required for thepenetration to penetrate different depths are recorded by means of a provingring fixed to the penetration piston assembly and a dial gauge. Both LaboratoryC.B.R and field C.B.R apparatus are available.
Â· Â· Â· Â· Â· Â· Â· Â· Â· Â· Â· Suppliedproving ring and dial gauge.
Building No 80, Hsiidc Industrial Estate,, Ambala Cantt, Haryana, 133001, India