Soil Compression Tester

The unconfined compression test apparatus for soil includes uniaxial compression test in which the test specimen is provided with no lateral support while undergoing vertical compression. The test measures the unconfined compression strength of a cylinder of cohesive or semi cohesive soil and indirectly shearing strength. The shearing strength of the soil is generally taken to be one half of the unconfined compression strength. The unconfined compression test apparatus is used normally on a undisturbed sample with its natural moisture content. It may also be performed on remolded samples to evaluate the consequences of disturbances and remolding. 
Unconfined Compression Test Apparatus is normally useful in soil mechanics laboratories. 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.

The apparatus consists of following:

• Load Frame 50kN capacity
• Electrically cum Manually Operated with 3 rates of strains 1.25mm, 1.50mm, 2.50mm/min
• 1No.Split Mould 38mm dia
• 1No.Set of Conning Tools
• 1 Set of Conning Plates with Springs
• 1 Set Proving Ring, 2.5kN capacity fitted with dial gauge with set of loading pads and calibration certificate by NCCBM (Govt Testing Lab) in a nice wooden carrying case
• Dial gauge 0.01mm x 25mm travel The Machine is fitted with ¼ HP Motor
• Suitable for Operation on 220V, Single Phase, 50Hz, AC Supply.

This is similar to  with the added advantage of a motorized drive permitting a choice of three constant rates of stain.


Specification:

• Comprises a screw operated load frame
• cap.5000kg with a gear box and motor drive giving 1.25, 1.5, 2.5mm/min
• Rates of strain
• a pair of cone seating
• adapter for proving ringand stain dial gauge bracket.
• Supplied with one pair of male/female coning tools for 38mm dia samples but without ring and dial gauge
• Suitable for operation on 230 V, Single Phase A.C. Supply.

 

Accessories:

• Coning tools in pairs (Male & Female) for samples having diameter 38mm, 50mm, 75mm & 100mm.

This is similar to with the added advantage of a motorized drive permitting a choice of three constant rates of stain.


Specification:

• Comprises a screw operated load frame
• cap.5000kg with a gear box and motor drive giving 1.25, 1.5, 2.5mm/min
• Rates of strain
• a pair of cone seating
• adapter for proving ring
• stain dial gauge bracket
• Supplied with one pair of male/female coning tools for 38mm dia samples but without ring and dial gauge
• Suitable for operation on 230 V, Single Phase A.C. Supply.

Accessories:

• Coning tools in pairs (Male & Female) for samples having diameter 38mm, 50mm, 75mm & 100mm.

Spring type unconfined compression testing apparatus (Spring Type Autographic) can be used either in a laboratory or in field.


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 0.4kg. 0.8kg and 1.6kg/mm
• a calibrated mask and one set of 50 charts, in a metal carrying case.

Spares & Accessories:

• Chart set of 50 Calibrated mask Spring set comprising one each of stiffness 2n/mm, 8 n/mm and 16 n/mm Coning tool for 38mm sample
• (female) Coning tool for 38mm sample,
• (male) Tripods stand wooden, for using the instrument in field. 

Unconfined Compression Tester Proving Ring Type (Hand Operated)

This is a hand operated instrument for determining the unconfined compression strength of soil specimens of diameter ranging from 38mm to 100mm. Load on the sample is applied gradually by a hand operated load frame and loads are measured on a sensitive proving ring attached to the load frame.

Specification

• Comprises of a hand operated load frame
• cap. 5000 kgf with screw jack for loading
• handle and strain dial gauge bracket
• adapter for proving ring, conical seats and male / female coning tools for 38mm dia samples
• Supplied without proving ring, dial gauge.

This is similar to with the added advantage of a motorized drive permitting a choice of three constant rates of stain.

Specification:

• Comprises a screw operated load frame
• cap.5000kg with a gear box and motor drive giving 1.25, 1.5, 2.5mm/min
• Rates of strain, a pair of cone seating, adapter for proving ring, and stain dial gauge bracket. Supplied with one pair of male/female coning tools for 38mm dia samples but without ring and dial gauge Suitable for operation on 230 V
• Single Phase A.C. Supply.

Accessories:

• Coning tools in pairs (Male & Female) for samples having diameter 38mm, 50mm, 75mm & 100mm.

Load Frames are used to apply load on the test specimen. The capacity and speed depends on the requirement of a particular test. Load Frames are used in C.B.R. Triaxial, Unconfined Compression Test etc.

This instrument is used for preparing soil samples for various tests like Triaxial Test, Unconfined Compression Test etc. Soil lathe consist of a cabinet enclosing motor and gear system which rotates a disk at 24 R.P.M. this disc adopts gripper plate of various size. An up right has an adjustable holder and takes upper gripper plates of different diameters. Arrangement is provided to control height and depth of cutting tool through a lead screw which has speeds 0.8mm / min. And 1.6mm / min. Supplied complete with gripper plate pairs for 38mm, 50mm, 75mm, and 100mm dia specimens. 

Our Load Frames are used to apply load on the test specimen. The capacity and speed depends on the requirement of a particular test and these are used in C.B.R. triaxial, unconfined compression test. Further, these are Ideal for using mobile laboratory.Load Frame, Motorized, 30 speeds (50 kN) cap.Two Pillar type, Detachable frame, Enclosed motor and gear system, Jewel lamps indicating direction of motion, Speed chart.Consists of a cabinet which housed the gear system & motor with sturdy angle iron frame.The loading is done through the bottom loading platen, which is carried on a lead screw which advances upwards.The top load bracket which slides over two upright pillars, can be positioned at any desired height and locked. It caries a screw adaptor for standard Proving ring. Rate of strains : 30, ( 6 mm/min to 0.00048 mm/min by interchanging the drive and driven gears, another set of 24 rates of strain can be obtained. 220V, 1 Ph, 50 cycles, AC supply.The Loading part of the unit is detachable from the main unit for ease of transport and to avoid damage to the tension rods.

For trimming various diameter specimen for triaxial and unconfined compression tests.
specification:the lower specimen grip is mounted on a disc which rotates freely. The soil sample is mounted on the lower specimen grip and the upper grip is firmly seated on top of the specimen. The vertical guide can be adjusted to control the depth of cut. While trimming the lower disc is rotated by hand. Supplied complete with a wire saw. Trimming knife, mounted on a support, can be adjusted horizontally as well as vertically to permit trimming of the specimen to the exact size of the ring. A guide supplied prevents over cutting. Complete with 38mm, 50mm, 75mm and 100mm dia specimen rings.