Soil Test Equipments

The California Bearing Ratio Test, (usually called CBR test) is an empirical penetration test for evaluation of mechanical strength of natural ground, subgrades and base courses beneath new carriageway construction. It is to determine the relative bearing ratio and expansion characteristicsThe apparatus confists of

 Load Frame, 50kn ( 5000 kgf) Capacity, 3 Speeds

 Mould 150mm ID x 175mm high

 Perforated Base Plate

 Extension Collar, 150mm ID x 50mm high

 Penetration Piston, 50mm face dia

 Adjustable Bracket, for Penetration Dial Gauge

 Circular MetalSpacer Disc. With detachable handle, 148 mm dia x 47.7 mm high time.

 Annular MetalWeight, 2.5kg, 147mm dia with 53 mm dia central hole

 Perforated MetalWeight 2.5 kg. 147mm dia, with 53mm dia soft

 Perforated Plate, 148mm dia, with adjustable stem and lock nut

 MetalTripod for Dial Gauge

 Cutting Collar

 Rammer 2.6kg, 310mm controlled drop

 Rammer 4.9kg, 450mm controlled drop

 Proving Ring Capacity 50 KN

 Dial Gauge, 25 mm travel, 0.01mm least count

Specification : Carries upto 7 sieves of 150 or 200 mm diameter. The shaker is driven by a 1/4 H.P. Motor through a reduction gear immersed in oil. The sieve table does not rotate but is inclined from the vertical axis and the direction on inclination charges progressively in clockwise direction. If the stop pin below the table is removed, the shaker can have a rotary motion. In addition to this gyratory motion of the table, there is an upward and downward movement ensuring that each square cm of the sieve is utilized. A pair of rods and a holder can be fixed on the top of the upper most sieve, and thus the sieve set in firmly held. Suitable for operation from 230 V 50 Hz, Single phase A.C. supply. a) Adopter for 300 mm dia. sieve available at extra cost b) Adopter for 450 mm dia. sieve available at extra cost 

Standad Used : IS 1888 1962, ASTM D 1194, BS 13779

This is for estimating the bearing capacity of shallow foundations in situ and for the design of flexible pavement. In the test procedure a steel plate is subjected to gradually increasing load and settlements of the plates recorded.

Specification : The out fit consists of 50 tonne hydraulic jack with separate pumping unit fixed to it a 0 - 500KN x 0.5KN. Pressure gauge and flexible metal pipe 5 mtr. long

Special ball and socket arrangement

Extension rod 12mm dia x 25 cm long

Magnetic base with female thread on top for holding extension rod

Top end plate, 50mm, dia with male thread for fitting onto the extension rods and positioning the dial gauge plunger

Column 15cm dia x 25cm long with flanges complete with four bolts and nuts

Column 15cm dia x 50cm long with flanges complete with four bolts and nuts

Bridge support of welded steel angle construction, 5 mtr. Span and stands approximately 30 cm. High. Fitted with two quick release clamps a for positioning and holding the dial bracket 

This is yodar type, motor driven sieve shaker for carrying out wet sieve analysis of materials. Specification : Consists of a water reservoir and a holder for sieves, which can take up to 7 sieves of 150mm or 200mm diameter. Shaker is driven by a ¼ H.P. motor through a belt drive. Shaker mechanism moves the sieves up and down in the reservoir. The reservoir has a water out-let for draining out the used water. Suitable for operation 230 V A.C. Single Phase