Soil Testing Equipments

Rapid Moisture Meter IS : 2720 (P-II), IS: 12175. BS 812, ASTM D 4944, AASHTO T217.
Consists of counterpoised balance of 6 gms for weighing the sample, scoop for Measuring carbide reagent, a set of steel balls, Calcium carbide reagent 500-gram bottle, & a cleaning brush in a nice wooden carrying case. 0-25% or 0-50% .

Speedy moisture tester is a portable system for measuring the moisture content of a wide range of materials including soils, aggregates, dust and powders (and liquids).

The system consists of a low pressure vessel fitted with a pressure gauge and an electronic scale and test accessories. Moisture measurements are made by mixing a weighed sample of the material with a calcium carbide reagent in the sealed pressure vessel. Includes durable case.

The reagent reacts chemically with water in the sample, producing acetylene gas that in turn increases the pressure within the vessel. The pressure increase in the vessel is proportional to the amount of water in the sample, the moisture content can be read directly from the calibrated pressure gauge.

Large one also available with 20 gm balance .

ASEW-030 A - Rapid Moisture Meter IS : 2720 (P-II), IS: 12175. BS 812,ASTM D4944 AASHTO T217
Consists of Electronic balance cap. 200 gms for weighing the sample, scoop for Measuring carbide reagent, a set of steel balls, Calcium carbide reagent 500-gram bottle, & a cleaning brush in a nice wooden carrying case. 0-25% or 0-50% .
Large one also available with 20 gm balance .

Permeability Apparatus: IS: 2720 (Part 17), IS: 11209, BS:1377, ASTM D2434, AASHTO T215.
Consists of:
Gunmetal Mould 100 mm I. dia x 127.3 mm ht x 1000 cc volume with extension collar 100 mm I. Dia x 60 mm high, Drainage base plate, Drainage cap, Metallic clamping ring, Dummy plate, Porous stone for drainage cap & drainage base. Complete Stand wall mounted with three glass tubes of 5mm, 10mm and 20 mm approx..

ASEW-032.A - Overhead tank made of GI sheet approx. 37.5 cm dia x 1 m high. It is provided with an inlet port at the top, six outlets at the bottom with cocks, air inlet and water filling tube at the top. An arrangement is provided to indicate the water level

Rapid Chloride Permeability Test-(RCPT) Complete Set.
ASEW RCPT is used for measuring the electrical resistance of concrete against the penetration of chloride (RCPT) according to the standard methods such as ASTM C1202, AASHTO T277 and ASTM C1760. The measurement data derived from this test method can be used to estimate the chloride diffusion coefficient of concrete in service life predictions and structure design, as well as durability-based quality control of concrete. Its used in penetrability testing in concrete laboratories and meets the specifications of ASTM and AASHTO specifications.

ASEW RCPT is used for measuring the electrical resistance of concrete against the penetration of chloride (RCPT) according to the standard methods such as ASTM C1202, AASHTO T277 and ASTM C1760. The measurement data derived from this test method can be used to estimate the chloride diffusion coefficient of concrete in service life predictions and structure design, as well as durability-based quality control of concrete. Its used in penetrability testing in concrete laboratories and meets the specifications of ASTM and AASHTO specifications.

Applications:

• Concrete's ability to resist chloride ion penetration (ASTM C1202, AASHTO T277)
• Bulk electrical conductivity of concrete (ASTM C1760)
• Performance-based quality control of concrete
• Estimation of chloride diffusion coefficient of concrete
• Estimation of chloride migration coefficient of concrete
• Service life design of concrete structures
• Estimation of the remaining life of concrete structures

Features:

• Stand alone operation
• Easy-to-assemble
• Accurate (±0.1 mA)
• Three measurement channels

Direct Shear Apparatus electrically, IS: 2720 (P-xiii), IS: 11229, ASTM D 3080, BS: 1377. (12 rate of strain).
The Direct Shear test is carried out with an apparatus consisting of a square divide into two halves . The specimen contained in the box , is subjected to a constsnt normal load while an increasing horizontal force is applied to one of the sections of the shear box. The force causes a shear failure along the junction between the box sections. He shear force and the normal load are measured directly. The rate of strain is adjusted by the speed of horizontal force applied. The loading unit has V strips on which the shear box housing rests. The precalibrated load yoke helps counter balance the loading system . the load yoke with direct and trough level system for applying normal load upto 8 kg/cm2 capacity, fixtures for proving ring , brackets for holding consolidation and strain dial gauges are provided . The lead screw coonected to the shear box housing helps application of shear stress.

12 rates of strains 1.25 to 0.0002 mm/min. Consists of: Shear box assembly. Halves of shear box-set of two, Plain gripper plates-pair, Perforated gripper plates-pair, Porous stone-pair, Top Loading pad, Base plate, Shear box housing with two ball roller strips, specimen cutter, weight to give normal stress of 3 kg/cm.sq. Comprises of: 0.05 kg/cm2. - 4 , 0.10 kg/cm2.-1, 0- 20 kg/cm2.-1, 0.50 kg/cm2.-3, kg/cm2- 1 . Specimen size 60 x 60 x 25 mm. Electrically. 220V, 1 Ph, 50 cycles, AC supply.

Direct Shear Apparatus Single rate of strain 1.25 mm/min Motorized

ASEW-035.A - Direct shear apparatus, Hand operated

ASEW-035.1 - Accessories: Dial gauge 0.01 x 25 mm travel.

ASEW-035.3 - Spares: Shear Box mould in two halves with Perforated Gripper plates, Plain gripper plates (Brass) & porous.stones.

ASEW-035.4 - Water Jacket Assembly made of Gunmetal

The apparatus is similar to ASEW-034 model, but with Electronic outfit in place of Proving ring and Dial gauges. Electronic Conversion kit:

Consists of: 3 Channel Digital indicator, Load Cell 2 kN cap Universal type, Displacement Sensor -2 Nos.

ASEW-036.A - Electronic Conversion kit: Consists of: 3 Channel Digital indicator, Load Cell 2 kN cap Universal type, Displacement Sensor- 2 Nos.

Direct Shear apparatus, Large, IS: 2720 (P-xxxix, sec-1), IS:11593. Motorised cap. 72 speeds.
With 72 speeds. Specimen size: 30 x 30 cm, change gear-12, 415V, or 1 Phase, AC supply

• Ideal for testing Shale, Industrial slag, Brick rubble, Colliery spoils, Geosyntetics
• Sample size up to 300 mm
• 50 kN shear and consolidation force
• 72 variable speed control
• Test management from consolidation to failure: the operator is only requested to remove the clamping screws of the shear box
• Straight connection between shear box, drive unit and load cell for the axial transmission of the horizontal force along the shearing plane, instead of the classic "swan neck"
• Easy and immediate set up of the test parameters
• Possibility to set different speeds and travel (forward and reverse) in the residual shear tests

Unconfined Compression Testing Machine, BS 1377, ASTM D2166,AASHTO T208.

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. Therefore, when laboratory tests in soil are performed to evaluate shear strength of soil, the insitu soil conditions and other factor should be simulated for obtaining meaningful results. For example, the Unconsolidated Undrained test on soil will yield the undrained strength, which can be used for finding the immediate stability of an excavation, whereas a consolidated undrained test with measurement of pore pressure can be used to evaluate the effective strength parameters of soil for designing the long term stability of an earth fill dam.

It is well known that the engineering behaviour of soil depends on the effective stress and not the total stress. The effective stress can be calculated by measuring the total stress and subtracting the pore water pressure from it.

To cater to the needs of shear strength determination of soil, arrange of equipment is offered, as listed in this section.

Equipments consists of Load frame 50 Kn Proving ring type, Motorised cum Hand with 3 rate of strains 1.25, 2.0 & 2.5 mm/min. with plain platen, Adaptor steel ball & Pair of conical Seating. Split Mould 38 mm dia x 76 mm long, Rubber sheath for 38 mm dia specimen, 220V, 1 Ph,50 cycles, AC supply

ASEW-038.1 - Accessories: High sensitivity Proving ring 2 kN cap & calibration Certificate

ASEW-038.2 - Accessories: Dial gauge 0.01 mm x 25 mm travel.

Triaxial Cell IS:2720 (P-Xi & Xii) BS: 1377,ASTM D2850, D4767, AASHTO T296, T297.
For testing specimen of size: 38 mm dia X 76 mm long. Perspex (Acrylic Plastic) chamber with an anvil and a loading plunger. The cell is easily split by releasing four tie rods. Leak proof upto 10 kg/cm.sq fluid pressure. An oil plug and air vent are provided for introducing a thin layer of oil over water. This provides an effective seating at the plunger for long duration tests. The cell is fitted with four ball valves of no-volume change type, at the base. Complete with Perspex Loading pad for 38 mm, Plain Perspex discs-2, Porous stones 38 mm-2, Sheath stretcher, Sand former, Drainage tube, short, drainage tube long, O ring-2, Brass pedestal & Rubber sheath - dozen.

Triaxial Cell for 38 mm dia x 76 mm long & 50 mm dia x 100 mm long with accessories as above for 38 mm dia & 50 mm dia.

Universal Triaxial cell for 38, 50 & 100 mm dia specimen with accessories stated as above for 38, 50 & 100 mm dia

Lateral Pressure assembly 10 kg/cm. sq. (150 psi) with foot Pump
The apparatus consists of a pressure chamber which has a flanged top cap fitted with a 10Kg/Cm2. Pressure gauge and a valve for pumping in air. Water inlet and drain cock are fitted to the chamber. The foot pump supplied easily develops a pressure of 10Kg./Cm2 Complete with connecting pressure hose.

Bishop Pore Pressure 10 kg/cm.sq. cap. (1000 kPa):
Consists of Pressure gauge, Bourdon tube type 200 mm dia Manometer Glass U tube, measures low positive and negative pore pressure and helps to check zero error of pressure gauge. It is provided with a mercury trap. (Mercury supplied at extra cost).Null indicator, Perspex with mercury trap and cursor to indicate the mercury level. Burette 50 ml for measurement of volume change in the soil specimen, Pressure pump, fitted with four ball valves, copper coil & water reservoir.

Note: All above parts are fixed on a panel suitable for mounting on the wall.

Electronic Instrumentation system for Triaxial Testing

• Direct reading strain, load and pore pressure
• Digital Read - out minimizes operator error
• Reduces operator time involvement

1. Plug - in transducer module system
2. Easy to install

• Facility for connecting read-out unit to compatible logging or Data Acquisition System

Triaxial Electronic Conversion Kit with an external load cell, 10 KN (1000 KGF) capacity, Pore Pressure Transducer, 20 bar (20 kg/cm2) capacity, an LVDT (Displacement Sensor) having a range of +- 10 mm and a 3 - channel Digital Indicator which has been specially designed to meet the requirements of Triaxial Test.

Digital Indicator

• Mode of Display : Digital Display, Automatic Polarity and over-range indication. The decimal point is positioned by the channel selector switch.

Resolution

• Power Supply : I part in 2000
• Voltage : 220 V
• No. of Channels : 3
• Parameter display : By a selector switch

Load Cell

• Capacity : 10 KN (1000 kgf).Maximum over
• load capacity : 10% of the rated. Load Cell
• excitation : 5 V, DC.
• Resolution : 0.01 kN (I kgf).
• Sensing : Strain gauges in full bridge configuration Element

Pore Pressure Transducers

• Capacity : 20 bar (20 kg/cm2)
• Max. Overload : 150% of rated

Capacity

• Pressure Cell : 5V, DC
• Excitation
• Resolution : 0.01 bar (0.01 kg/cm2)
• Sensing element : Strain Gauges in full bridge configuration

Displacement Transducer

• Range : +- 10 mm
• Sensing element : LVDT

Constant Pressure system, Oil Water type. Cap. 20 kg/cm2 Consists of an oil pump, continuously driven by an electric motor.
during the entire period of operation to maintain the desired pressure. The unit provides continuous variable pressures upto 20 kg/cm.sq. is increase or decrease simply by turning a control knob. A transparent oil water interchange vessel is provided to transmit water pressure to the test apparatus. The internal components are protected by a strong compact housing. Supplied complete with pressure gauge, flow valves & connecting pressure hose.

Volume Change Gauge, Sensitive. The apparatus consists of a volume measuring polythene tube running along both sides of a scale and connected at both ends to two mercury trap. These traps are connected to flow reversal valves through a manifold. The length of the polythene tube is enough to measure 6 ml volume of fluid per cycle. A small pallet of mercury is introduced in the circuit to be used as a curser, and the movement of pallet is measured. The unit is tested to a pressure of 20 kg/cm2 (20 bar) and is designed for wall mounting.