Soil Testing Instruments

Main features of the load frame is for Triaxial and CBR Tests
Specification
The Load Frame consists of a cabinet which houses the gear system and 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 carries a hexagonal screw adapter for standard proving rings. The loading part of the unit is detachable from the main unit for ease of transport and to avoid damage to the tension rods. Rates of strain: 30, between 6 mm / min and 0.00048 mm/min. By interchanging the drive and driven gears, another set of 24 rates of strain can be obtained. Operate on 230 V, 50 Hz, single phase, AC Supply.

The Load Frame is designed for conducting triaxial shear tests on rock specimens, but its use can be extended to any field where there is a requirement of the rates of strain of this load frame to be applied. This load frame gives a choice of twelve rates of strain from 0.000125mm/ min to of 5mm/min. Suitable for operation on 3 Phase, 415 V, AC Supply. It consists of a cabinet housing the electric motor, reduction gear and the turret gear box. Two pillars are fitted on the base over the cabinet. The load is applied by advancement of a lead screw. A suitable adapter is provided for fixing a 500 kN capacity proving ring which is supplied at extra cost. This load frame has a platen of about 25 cm dia to house the High Pressure Triaxial Cell.

• Proctor Penetrometer, Spring Type, 0-40 kg x 1
  The instrument consists of a needle attached to a spring loaded plunger, the stem of which is calibrated to read 0 to 40 kg division. Long stem is graduated at every 12.5mm to read depth of penetration and for use with needles of larger areas . The small penetration stem is also graduation in 12.5mm division and is used with needles of smaller areas. Needle points one each of 0.25, 0.5, 1.0, 1.5, 2.0, 3.5 and 6.0 sq Cm. and one tommy pin is supplied. Complete as above in a wooden carrying case.
• Proctor Penetrometer, Hydraulic Type, 0-40 kg x 2
  This instruments is same as above but the penetration pressure on the needle is conveyed through a hydraulic system Comprises hydraulic proctor needle system complete with a pressure gauge fixed at easily readable angle reading 0-70 kg x 2 kg. A set of needle points consisting one each 0.25, 0.5, 1.0, 1.5, 2.0, 3.5 and 6.0 sq. cm. and a wooden carrying case.
• Penetrometer, Proving Ring Type. (Vicksberg Penetrometer)
  Simple and light instrument for measuring static penetration resistance. The thrust force is provided directly by the operator who, by pushing on the T handle, forces the cone into the soil.The encountered resistance is measured on the fitted load ring. Testing is only possible in soils with good consistency and for short depths.
  Specifications
  1. 3 cones with 30° cone angle and 1 sq. inch sectional area
  2. 1 KN (100 kgf) load ring

Consists of a 1 kg Glass Jar with Brass Cone, Locking Ring and Rubber Seal
Meets: - IS: 2386 (Part 3)-1963

For the rapid collection of true representative samples from aggregates, sand and fillers, sample divider is required. Riffle Sample Divider consists of a metal box fitted with a series of chutes of equal width, which discharge the material alternatively in opposite directions into separate pans. The chutes of the riffle are steep enough to allow rapid flow of the material.
Meets:- IS: 1607-1977, 2720, ASTM C 136, D271, D421, D422, D423, D424, D427, D451, D452, D457, D806, BS: 812, 1377, AASHO T27, T87.

• Riffle Sample Divider, 13mm slot width, 14 slots and approx. 2.1dm3
• Riffle Sample Divider, 25mm slot width, 16 slots and approx. 4.4 dm3
• Riffle Sample Divider, 50mm slot width
• Riffle Sample Divider, 75mm slot width

Note: - ASTM sizes are also available.

The sample extractors shown in this section meet the requirements of Indian, British, ASTM and AASHO standards. Soil core specimens can be extracted from sampling tubes with minimum disturbance. Specimens of smaller dia can also be extracted from larger size samples.

• Sample Extractor, Hand Operated, for 38 mm
  This extruder is used for taking sample core specimens of 38 mm dia from sampling tube the outfit by the Screw Type method with a Wire Sample Trimmer
• Sample Extractor, Hand operated, universal
  This extruder is used for taking sample core specimens of 38 mm, 50 mm, 75 mm and 100 mm dia from sampling tube
• Sample Extractor, motorised. All purpose Hydraulic Extruder
  This Extractor has been specially designed to overcome the difficulties faced in extracting specimens from long sampling tubes. Provided with Power pack with quick release coupling and having Manual operation possible on power failure Eject soil from sampling tubes and moulds up to 60 cm in length and 38mm to 150mm in dia by a single operation. Allows direct transfer of soil from field sampling tubes, proctor and CBR moulds into 38mm dia tubes with minimal disturbance

Hand-operated screw-type augers as well as post hole (blade type) augers are available in different sizes as listed below. The screw-type auger can be used both for advancing the hole and for disturbed sampling. The auger outfit is supplied with an extension rod, T-piece and a tubular handle. Additional extension rods are also available for sampling at deeper location.

• Sampling Auger Outfit, Blade Type, 75 mm dia
• Sampling Auger Outfit, Blade Type, 100 mm dia
• Sampling Auger Outfit, Blade Type, 150 mm dia

Extension Rods, for use with the above-mentioned Auger Heads, one meter in length, threaded at both ends with Hexagonal Couplings. Handle and T-piece Spanner
Meets:-ASTM D 1452