» Geotextile/Geosynthetics Testing Instruments
Geotextile/Geosynthetics Testing Instruments
Thickness Gauge for geotextile
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
Meets: - ASTM- D 5199, EN-ISO-9863-1, IS-13162-3, ASTM-D 1777
- Thickness measuring resolution 0.01 mm or as desired
- Thickness measuring range 0.01-12.5 mm or as desired
|6.35 mm diameter
||20, 200 KPA
|9.5 mm diameter
|10 mm diameter
||2, 20, 200 KPA
|28.7 mm diameter
|56.4 mm diameter
||2, 20, 200 KPA
Cone Drop Test Apparatus
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
Cross Permeability Test Apparatus
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.
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.
Meets: - ASTM- D 4491 99a, IS-14324
- 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
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
Capacity : -20 liter
Dry Sieve Test Apparatus (Apparent Opening Size (AOS)
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
APPARENT OPENING SIZE
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
Sieve Shaker Table top type
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
Sieve Shaker Electromagnetic Type
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
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.
In-Plane Permeability Test Apparatus
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.
- 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
Universal Testing System for Geotextile with Microprocessor control
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.
Note: - Additional software is also available viewing the test on excel
The following attachments are available for Geotextile testing:
- Load cell
.10000 Kg Tension-Compression
- Force Measuring Accuracy
Better than 1%
.. 50mm/min to 350
- Position Measuring Resolution
Optional, RS 232 & Software
Wide-Width Tensile Strength (Wide width strip Method)
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.
Grab Tensile Strength Test (Breaking load and elongation of geotextile)
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.
Trapezoidal Tear Resistance Test
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.
CBR Push Through Test
Meets: - ASTM D- 6241, BS-6906 part 4,
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 fabrics ability to
withstand aggregate penetration.
Index Puncture Test (Ball Bursting Strength of Textiles)
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
Hydrodynamic Sieve Test Apparatus:
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.
Interface Friction Test Apparatus
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.
Abrasion resistance of geotextile
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
Bursting Strength Tester
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.
Note: Digital type pressure gauge with and without pneumatic clamp
type also available.
- 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
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.
- 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
- 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
Colour Matching Cabinet
Colour Matching Cabinet with D65. TL84.Illuminant
A.UV-Light. CWF (Cool White Fluorescence.) D50.Simulated Sunlight. CDL (Cool
- Outer dimension : 720mm x 520mm x 650mm
- Viewing area : 595mm x 460mm x 410mm
Digital Twist Tester
- Yarn Test Length - : 250 MM FIX LENGTH.
- Suitable For - S/Z TYPE OF TWISTED YARNS.
- RANGE - UPTO 9999 TPM OR 99.99 TPI.
- RESOLUTION : 1 TPM OR 0.01 TPI"
Air Permeability Tester
Air Permeability tester up to with four different
type adaptor 5 cm2, 10 cm2, 20 cm2 & 38 cm2, with Manometer & Rota
DIN Abrasion Tester