Rima Engineering Corporation

The California Bearing Ratio test, (usually called CBR test) is an empirical test developed in
California, USA for determining the Relative Bearing Ratio and expansion characteristics under
known surcharge weight of base, sub-base and sub grade soils for the design of roads, pavements
and runways.

Determination of soil shear strength is essential for designing the foundation of structures, soil and
soil retaining structures, soil slopes, etc., Shear strength of soil depends on various factors and insitu
soil conditions.

Sci-tech Digital Direct Shear Test Apparatus, Capacity 2 kN, complete with
accessories
The Direct Shear test is carried out with an apparatus consisting of a square divided into two halves.
The specimen, contained in the box, is subjected to a constant normal load while an increasing
horizontal force is applied to one of the sections of the shear box. This force causes a shear failure
along the junction between the box sections.

The apparatus is similar to SM-012 model but it is supplied with the
Electronic Outfit, in place of Proving Ring and Dial Gauges.

Vane Shear Tests are conducted where it is difficult to obtain suitable specimens or where intrusion
from a sampling tube may cause too much of a disturbance.
Sci-tech Motorized Laboratory Vane Test Apparatus Model SM-013 Consists of a special motor,
adjustable in height by means of a lead screw rotated by a drive wheel to enable the vane to be
lowered into the specimen.

With an external load cell, 10 kN capacity, Pore Pressure Transducer, 20 bar (20 kg/cm2) capacity,
an LVDT (Displacement Sensor) having a range of 0- 20mm mm and a 3 – Channel Digital Indicator
which has been specially designed to meet the requirements of Triaxial Test.

The experimental investigation for determining the stress-strain relationship is usually carried out with
the Triaxial Compression test. During the test, the soil samples gradually stressed upto failure.

Two standard sizes of beam moulds are offered for casting concrete specimens for flexural
strength testing. These moulds are made of steel and are supplied complete with a base
plate.

Consolidation of clay deposit leads to distress in buildings such as cracks and failures. Consolidation
is reduction of volume of soil due to expulsion of water from its pore space caused by sustained
loading. This phenomenon is time dependent. The one dimensional consolidation test performed on
an undisturbed sample of clay is useful for understanding the history of the soil deposit. The test
results can be used for calculating the settlement of structures built on clay soil.

The new design has better aesthetics and is more compact construction.
Designed for grinding materials to produce fine mesh samples.
It is suitable to grind up to 150 micron.

Vicat Apparatus (Setting Time & Consistency of Cement) as per IS: 5513. The apparatus consists of
initial needle, final needle, consistency plunger, conical vicat mould, glass plate. The apparatus is
provided with dashpot arrangement for jerk free lowering of needles

Permeability is a property of soil which permits flow of water through its interconnecting voids.
Permeability is an important engineering property which governs the rate of settlement of saturated
compressible soil layers and the rate of flow of aquifer. Permeability is taken into account for pumping
ground water, spacing well points for de-watering foundation sites for excavation, retention of water in
reservoirs, design of dams and selection of soils to be used for various zones of embankments of
dams and reservoirs.