Geosynthetics Testing Instruments Manufacturers | Cone Drop Test Apparatus Manufacturers | Cross Permeability Test Apparatus Manufacturers | Dry Sieve Test Apparatus Suppliers

This is used for measuring the thickness of the geotextile. The thickness of the geosynthetic material can be measured with an accuracy of 0.001 mm (depend on the dial gauge accuracy) for thickness up to 10 mm with Foot pressure of 6.35 mm, 10 mm and 56.4 mm diameter. Dead weight mechanism is provided to apply desired pressure varying from 2, 20 to 200 kPa. Surface plate is grounded and is rust free to enable reproducible results.
Meets: - ASTM- D 5199, EN-ISO-9863-1, IS-13162-3, ASTM-D 1777

Specification

Thickness measuring resolution 0.01 mm or as desired
Thickness measuring range 0.01-12.5 mm or as desired

Method to determine the resistance of geosynthetics to penetration by steel cone dropped from a fixed height, as a simulation of dropping sharp stones on their surface. Generally applicable to all geosynthetics. However, the test principle may not be applicable to some types of products. The specimen is clamped between two steel rings. A steel cone (45° tip angle, 1000 g) is dropped from a height of 500 mm onto the centre of the specimen. The degree of penetration is measured by insertion of a graduated cone into the hole.
Meets: - EN-ISO-13433-2006, BS6906: Part 6
Note: - Electrically cone release facility also available

Permeability of a geotextile must be substantially greater than that of the protected soil, so that water can pass freely from the soil through the fabric without build up of hydro static pressure. A high value of the permeability of the geotextile also infers that partial clogging will not reduce the permeability. The constant head test is carried out using a head of 50 mm of water.
Essential Accessories
Overhead Tank
Loading unit, 300-kPa capacity
Cross Permeability Apparatus

These test methods cover procedures for determining the hydraulic conductivity (water permeability) of geotextiles in terms of permittivity under standard testing conditions, in the uncompressed state. Included are two procedures: the constant head method and the falling head method.

In Constant Head Test: - A head of 50 mm water is maintained on the geo textile throughout the test. The quantity of flow is measured versus time. The constant head test is used when the flow rate of water through the geotextile is so large that it is difficult to obtain readings of head change versus time in the falling head test.

In Falling Head Test: - A column of water is allowed to flow through the geo textile and reading of head changes versus time is taken. The flow rate of water through the geo textile shall be slow enough to obtain accurate readings.

Sample Size: - 50 mm
Head can be maintain of the sample : up to 40 cm
Suitable for Both type of test :- Constant Head and Falling Head.

Meets: - ASTM- D 4491 – 99a, IS-14324

De-Aired Tank is designed to remove dissolved gasses from ordinary clean water. The apparatus consists of a closed cylinder with hose attached to vacuum pump provided, which is controlled by PID controller.

Capacity : -20 liter

The test involves sieving rounded particle sizes for which 5% or less by weight pass through the geotextile. The Apparent Opening Size (AOS) is defined as ‘Retained On’ size of that fraction expressed as a standard sieve number (size). The test is widely used for relative comparison amongst the geotextiles. Thus AOS is a means of correlating geotextile pore structure to an equivalent screen mesh size. The apparatus consist of a 20 cm dia brass frame with clamp, a receiver and a lid Dry Sieve Test Apparatus.
Meets: - ASTM D4751-87, BS-6906-2, IS-14294

The apparatus comprises a sieving unit, which allows testing of a specimen with an exposed sieving area corresponding having 148 mm diameter with a supported Grid of 1.4 mm diameter and mesh size of (10±1)mm to support the specimen during the test to avoid excessive deformation having the nozzle for discharge of water Fixing on the acrylic sheet cover for viewing the sample during test. The complete set is provided with the pan which has the drain nozzle for collate the water after test.

Essential Accessories

To make the process of sieving easier and quicker, electrically operated mechanical table top type sieve shakers are offered for dry sieving. These Sieve Shakers are popularly used not only in soil laboratories but also dry sieving the geotextile testing

ELECTROMAGNETIC SIEVE SHAKER, which have been developed applying the latest technological advances of power control. The sieve shakers microcontroller is used to set both the process time from 1 min to 99 min and the amplitude from 0.5 to 3.5.

The Beads of the following size is available in One Kg pack

Rounded Beads, made of glass, size 0.85 mm (passing 1 mm and retained at 0.85 mm)
Rounded Beads, made of glass, size 0.425 mm (passing 0.85 mm and retained at 0.425 mm)
Rounded Beads, made of glass, size 0.25 mm (passing 0.425 mm and retained at 0.25 mm)
Rounded Beads, made of glass, size 0.18 mm (passing 0.25 mm and retained at 0.18 mm)
Rounded Beads, made of glass, size 0.15 mm (passing 0.18 mm and retained at 0.15 mm)
Rounded Beads, made of glass, size 0.075 mm (passing 0.15 mm and retained at 0.075 mm)

Water supply system is designed to spray the water on the sample it is provided with the flow control valve on the front and with two indicator one for power supply on and one for pump on.

This test is necessary for drainage application. The permeameters can be of parallel flow or radial flow type. In either case, flow occurs along the plane of the permeamatre. In the apparatus, flow occurs radically outwards, from a central hole to the periphery of a circular specimen. The transmissivity is defined as the volumetric rate of flow per unit width of geotextile and unit hydraulic head.
Essential Accessories

Overhead Tank
Loading unit, 300 kPa capacity

Universal Testing System for Geotextiles with Digital Load Indicator
The Universal Testing Machine is designed to carry out various tests on Geotextiles viz. Narrow & wide Tensile Strength, Trapezoidal Tearing Strength, CBR Push through and Puncture Strength etc. The machine gives a choice of seven constant rates of travel of the lead screw ranging from a maximum of 320mm/min to a minimum of 50 mm/min. The capacity of the machine is 100kN (10000kgf).It is provided with two no of load cell 100 KN and 10 KN

The unit is Digital Microprocessor control and speed regulating by servo controlled motor and the speed can be from 5 mm to 500 mm. This frame also be use with CBR test on soil, Marshall stability test on Bitumen and many more tests where speed required is with in the limit and maximum load is below 100 KN.

Specification:-

Mounting …………….Floor Standing
Capacity ……………..10000 Kg
Load cell …………….10000 Kg Tension-Compression
Force Measuring Accuracy………… Better than 1%
Speed……………..…….. 50mm/min to 350 mm/min
Position Measuring Resolution………0.1mm
Computerisation……… Optional, RS 232 & Software

Note: - Additional software is also available viewing the test on excel format.
The following attachments are available for Geotextile testing:

Meets: - ASTM D 4595-86, ISO 10319:2008, IS-13162 Part -5
Two clamping systems 200 mm wide and 50 mm length in the direction of the applied force are mechanical wedge type and facilitate conducting Narrow Strip and Wide Width Tensile Strength tests as per many international specifications. These grips allow simple and rapid sample loading.

Meets: - ASTM D-4632,
This test measures the ability of the geotextile to distribute concentrated loads. Specially devised clamps (25 mm wide) with a gauge length of 100 mm are placed across 200 mm square samples or 200 mm x100 mm samples. The sample is then subjected to tension at a specified rate until failure occurs. It is widely used by manufacturers as a quality control tool and as such is the most commonly reported tensile strength value. It can also be used for relative comparisons between geotextiles of the same type.

Meets: - ASTM D 4533, IS-14293
Geotextiles can be cut or punctured during field installation, which can create a possible condition by which strength is controlled by a tearing resistance. An outline of an isosceles trapezoid is marked on a rectangular specimen (150 mm x 75 mm) cut for the determination of tearing strength, (with a 6 to 9 mm cut) and the nonparallel sides of the trapezoid marked on the specimen are clamped in parallel jaws of the Tensile Testing System.

Meets: - ASTM D- 6241, BS-6906 part 4, ISO-12236:2006
Fabric is clamped to give an inner diameter of 15 cm and a 50 mm CBR plunger is pushed centrally through a fabric at a specified rate. The load at failure is the push through load and when divided by the cross-sectional area of the plunger, gives CBR push through resistance.

Meets: - ASTM D-4833
The geotextile specimen is clamped to obtain an inside dia of 44.45 mm and force is applied through an 8 mm dia plunger till failure. The puncture strength so obtained is felt to reflect the fabric’s ability to withstand aggregate penetration.

The geotextile specimen is clamped to obtain an inside diameter of 44.45 mm and force is applied through steel ball having 25 mm diameter at the rate of 305 mm/min and continue at that speed until the specimen bursts. Record to the nearest 0.5 N the ball-bursting strength of the specimen.
Meets: - ASTM D-3787

The apparatus consists of two test drums of 14 cm dia and 10 cm effective length with 16 nos. of 4 mm dia rods provided circumferentially at equal spacing to hold the geotextile specimen in position. Two troughs to contain the test drums are supported on horizontal axis, facilitating free rotation and capable of being filled with distilled water to a level of 20 mm below the drum axis. The clearance between the trough and the geotextile could be maintained at about 40 mm. The apparatus is provided with a motor drive and a change gear assembly to enable rotation of the drums at a speed of 20 rpm.

Note: - This machine is also available with servo controlled unit having 5-30 rpm speed with digital counter.

This test method covers a procedure for determining the shear resistance of a geosynthetic against soil or a geosynthetic against another geosynthetic, under a constant rate of deformation.
Meets: - ASTM D 5321-02, EN ISO 12957-1:200
Note: - Direct shear apparatus is to be order separately.

This test method covers the determination of resistance of geotextiles to abrasion using an abrasion tester. This test method at this point has only been evaluated for geotextiles— not geomembranes, grids, etc. Therefore, the test method is designated for geotextiles, not geosynthetics, as all products may not lend themselves to this test method for abrasion. If later developments indicate a wider scope for this test method, appropriate changes will be made. The assembly should be two parallel, smooth plates, one of which makes a reciprocating motion. The speed of the reciprocating plate should be adjustable between 10 and 115 double strokes per minute. The stroke length should be 25 mm (1 in.). The second plate is rigidly supported by a double-lever assembly to provide free movement in a direction perpendicular to the reciprocating plate. This plate is stationary during the test and must be well balanced so that a vertical load can be maintained by means of dead weights. Both plates are equipped with clamps at each end to hold the test sample and the abrading medium. The clamps have gripping surfaces adequate to prevent slippage of the specimen or the abrading material during the test.
Meets:-ASTM-D 4886-91, IS-14714, EN ISO 13427:199

It consists of a loading frame for the specimen to be mounted, the load to be correctly applied, and strain monitored. The connections between jaws and loading apparatus have sufficient freedom that the load is applied uniformly across the width of the specimen. The jaws shall grip the specimen with sufficient firmness to allow minimum slippage.
Meets: - IS-14739

This chamber is capable of maintaining a temperature range from - 40 to + 100°C and controlled by the PID controller for better accuracy.
Meets: - ASTM D-4594

The Bursting Strength Tester is designed to find bursting strength of geotextile/fabric/leather/paper/paper board. A test specimen is held between two annular clamps under sufficient pressure to minimize slippage. The upper clamping surface which is in contact with the test specimens has a continuous spiral grooves. A circular diaphragm of rubber is clamped between the lower clamping plate & pressure cylinder so that before the diaphragm is stretched by pressure underneath it the center of its upper surface is below the plane of the clamping surface. The equipment is fitted with a motor driven cam mechanism, which increases fluid displacement on the lower side of the diaphragm at a specified rate. The equipment is fitted with an arrangement, which automatically brings down the pressure and stops the motor on completion of the test cycle. A maximum reading type pressure gauge gives the bursting pressure. The equipment is raggedly designed to give a long & trouble free life.

TECHNICAL SPECIFICATION

Capacity: 35kg /cm² and above
Opening in upper clamp: 30.5 mm diameter
Opening in lower clamp: 38.1 mm diameter
Rate of fluid displacement: 95 cc/ minute
Test fluid: Glycerin
Gear Box: Worm reduction type

Note: Digital type pressure gauge with and without pneumatic clamp type also available.

GSM Round Cutter offered come fitted with precision finished and superior grade high strength blades as well as other associated metal parts that ensures uniform cutting of geotextile and other material. We have two type of GSM cutter details are as follows.

Technical Data:

Body of the Machine - Cast Iron
Cutting Tool - Bottom Pad & Blade
Diameter Size: 112.8 mm
Pad & Blade life up to 6,00,000 Cuttings
Machine Weight - 10.5 Kgs Approx

Technical Data:

Body of the Machine - Cast Iron
Cutting Tool - Bottom Pad & Blade
Diameter Size: 140 mm
Pad & Blade life up to 6,00,000 Cuttings
Machine Weight - 14.5 Kgs Approx


	Universal Testing System for Geotextiles with Digital Load Indicator
	request a quote


	Universal Testing System for Geotextile with Microprocessor control
	request a quote


	Wide-Width Tensile Strength (Wide width strip Method)
	request a quote


Thickness Gauge
request a quote


Environmental Chamber
request a quote


Colour Matching Cabinet
request a quote

Geotextile/Geosynthetics Testing Instruments