The CBR - California Bearing Ratio

- method is used for the laboratory evaluation of subgrade and subbase coarse materials in road construction.

The apparatus comprises moulds with accessories,

compaction rammers (the automatic models are the same used for the compaction of Proctor moulds).

Different models are available conforming to the various specifications in use.

ASTM Standard CBR Mould with accessories

1) CRB Mould complete with collar and perforated base plate;

Plate steel, 6in (152.4mm) dia. * 7in (177.8mm) body height;

2) Spacer disc with “T” handle

3) Annular surcharge weight, 2.27Kg;

4) Slotted surcharge weight, 2.27Kg;

5) Cutting edge;

6) Solid CBR base;

British standard CBR Mould with accessories

1) CBR Mould body with base plate;

152mm ID * 127mm Height, 50mm high collar

2) CBR Mould with three plugs collar;

Other accessories can be produced according to customer’s needs;