Abrasion resistance of Geo textile

Meets:-ASTM-D 4886-91, IS-14714, EN ISO 13427:199
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 :- IS-16653
The test method simulates abrasion load on geo material. A mixture of stone chipping and water passes over geo material beg sample fixed in rotating drum

Details are as follows.

• Test Sample size 280x170 mm
• Drum Size 980 mm octagonal.
• With Digital revolution controller (At 5000±5 revolution revering type) with revolution counter (Variation of 20 revolution at 40000 count)
• AC drive
• Branded Gear box with 1 HP 3 phase motor.
• Power transmission by Chain and pulley.
• Sample trolley type Tray.
• Voltage requirement 220 volts 50 HZ 1 phase

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.