This instrument is used for determination and checking of bitumen percentage in bituminous mix, the mix is added with a solvent and dissolved bitumen is removed by centrifugal action. It consists of a removable aluminum rotor bowl, capacity 1500gms, with a cap and tightening nut.

The bowl assembly is mounted on a vertical shaft which produces from a cast housing.

This shaft and the bowl is rotated fast manually by enclosed gear in the cast body and handle.

Solvent is introduced during the test through the holes in the cap of the housing.

A drain is provided to collect dissolved bitumen coming out of the rotating bowl and getting collected in the housing.

 

The Direct Simple Shear (DSS) test is used to measure un-drained shear strength of soils to reflect the average shear strength mobilized in the field during failure of embankments on soft soil foundations and deep excavations in clay. The DSS test generates a fairly homogeneous state of shear stress throughout the specimen, which provides initial stress condition, stress path, and deformation configuration that models numerous field loading conditions more closely than any other test system. 

 

Specification:

• Choose load capacity up to 11 kN (2,500 lbs) horizontal & vertical

• Accurate displacement rate control from 0.000006 to 21 mm/min (0.0000003 to 0.8 in/min)

• Vertical travel: 25.4 mm (1.00 in)

• Horizontal travel: +/- 25.4 mm (1.00 in)

• Dimensions: 228 x 560 x 762 mm (9 x 22 x 30 in)

• Weight: 63 kg (140 lbs)

 

This extractor Frame is used for taking out soil samples compacted or undisturbed, from 100 mm dia. and 150mm dia. Cylinders such as core cutters, Proctor moulds, C.B.R moulds etc.

 

Specification:

• It consists of a 5 Ton capacity hand operated, hydraulic jack mounted on a suitable frame.

• Two plungers, one for 100mm dia. and the other of 150mm dia. moulds are supplied.

• One thrust plate for 150mm dia. and and one for 100 mm dia. specimens are also supplied.

• Height of thrust plate is adjustable.

 

•The equipment comprises one each: Gun metal mould, 100 mm I.D. x 127.3mm high x 1000ml volume.

•Gun metal mould extension collar, 100mm dia. x 60mm high for the above mould.

•Gun metal Drainage base plate with a recess for a porous stone and with an outlet valve.

•Metalic clamping ring.

•Gun metal drainage cap (top plate with a recess for a porous stone and fitted with an inlet valve and an air release valve).

•Gun metal dummy plate to serve as a false bottom during compaction.

•Porous stone for drainage cap. Porous stone for base plate. Set of glass stand pipes approximately 6mm dia.,

•10mm dia. and 20mm dia. mounted on a wooden board.

 

The unconfined compression test is the simplest and quickest method for evaluation of the shear strength of cohesive soil in the laboratory or in the field. The results from compression test apparatus are widely used in ascertaining the relative consistency and sensitivity for estimating the ultimate bearing capacity.

 

 

Specification:

Consists of a spring operated load frame with arrangements for loading 38mm x 76mm samples, one set of four load springs of stiffness 0.2kg, o.4kg, 0.8kg and 1.6kg/mm, a calibrated mask and one set of 50 charts, in a metal carrying case.

 

Spares & Accessories:

Charts set of 50 Calibrated mask. Spring set comprising one each of stiffness 2N/mm, 4N/mm, 8N/mm and 16Nmm Coning toll for 38mm sample (female) Coning toll for 38 mm sample (male) Tripod stand wooden, for using the instrument in field.