CBR Test Apparatus

Product Code: EKE 155

Standrad: Standard IS:2720 (Part 31)

EKE 15501  Loading Jack, with U-bracket, capacity 50 kN (5,000 kgf). This is specially designed for use with Field CBR test apparatus. It consists of a hand operated, two speed, screw jack fitted with a U-bracket. A hexagonal adapter is provided to fix a proving ring. A thrust bar, which passes through the U-bracket, is screwed on to a proving ring (supplied at extra cost) which protects the proving ring when the loading is eccentric

EKE 15502 Swivel Head, for the Loading Jack
EKE 15503 Penetration Piston, 50 mm dia threaded at the  upper end, to connect to the various lengths of extension sleeves, through a connector
EKE 15504 Extension Set, consisting of 1 length of 5 cm, 2 lengths of 10 cm, 1 length of 30 cm, 1 length of 50 cm and a length of 100 cm used as spacers between the proving ring and penetration piston. The lengths are machined from steel tubing
EKE 15505 Connector Set, consists of eight connectors for coupling the penetration piston and proving ring assembly, either directly or through extension pieces
EKE 15506 Datum Bar Assembly, consisting of two stands and 1 m long Bar
EKE 15507 Adjustable Bracket, for mounting the Dial Gauge
EKE 15508 Annular Metal Weight, 5 kg, 250 mm dia with 53 mm dia central hole
EKE 15509 Slotted Metal Weight, 5 kg, 215 mm to 250 mm dia with 53 mm dia slot 2 Nos.
EKE 15510 Slotted Metal Weight, 10 kg, 215 mm to 250 mm dia with 53 mm dia slot 2 Nos.

The use of the in-situ CBR apparatus in large road construction projects has increased considerably in recent years. This apparatus, mounted on a rolled steel joist cantilevered from the back of the truck or fitted to the underside of a mobile frame, can be used to determine the bearing capacity of soils quickly and efficiently. This method of testing in-situ, using piston penetration, is useful for determining the load carrying capacity in the field, when the in-place density and water contents are such that the degree of saturation is 80% or greater, when the material is coarse grained and cohesionless so that it is not affected by changes in the water content and when the material has been in-place.