Ring and Ball Apparatus
Electrical heating, with a Heater and Energy Regulator, Suitable for operation on 230 V, 50 Hz, single phase, AC supply. Each unit is supplied with Bath of heat resistant glass
Tapered Rings - 2 Nos.
Ball Centring Guide - 2 Nos.
Steel Ballsof 9.5 mm dia - 2 Nos
Ring holder - 1 No.
Electric Heater (Hot Plate - 1 No.
Extra
Thermometer IP 60C
Range: 2 C to 80 C
Thermometer IP 61C
Range: 30 C to 200 C

IS: 10082
The instrument is designed to test specimens from 50 mm dia to 100 mm dia having thickness equal to half the diameter. A pair of loading jaws, designed so as to contact a disc shaped sample at diametrically opposed surfaces over an arc of contact of about 10 degrees at failure, is supplied. The set of jaws supplied with the equipment is designed for 50 mm dia specimen and therefore it is essential to order jaws for respective sizes, if other diameter samples are to be tested. A set of plain platens are provided with the jack which enable testing of cube and circular specimens up to 50 mm size for compressive strength. The outfit consists of
Loading Framefitted with hand operated Hydraulic Loading Jack of 200 KN capacity provided with self-retracting Piston, pair of Plane Platens
Pair of Semi-Circular Jawsfor 50 mm dia samples
Load Gauge0-200 kN x 2 kN capacity, provided with maximum Load Indicator
Extras
Pair of Jawsfor 60 mm dia samples
Pair of Jawsfor 70 mm dia samples
Pair of Jawsfor 80 mm dia samples
Pair of Jawsfor 90 mm dia samples
Pair of Jawsfor 100 mm dia samples.

IS: 10050-1981

• For determination of resistance offered by rock to weathering and disintegration when subjected to immersion in water
• Facility to test upto four sets of samples
• Quick couplings for assembly and removal of drums

The apparatus consists of a motor on baseboard capable of driving two or more drums at a speed of 20 rpm. A suitable number of plastic water troughs, each designed to contain a test drum with quick release drive assemblies, permit 1 to 4 drums to be driven at one time. The test drums are supported on water lubricated bearings allowing 40 mm unobstructed clearance below the drum and a trough water level 20 mm below the axis of the drum. Drums are made of brass and comprise 2 mm wire mesh cylinders of 140 mm dia and 100 mm length. The equipment consists of
Base Board with Motor Drive assembly with two drum and tank assemblies. Suitable for working at 220 V, Single phase, AC supply.
Extra
Pair of Drums and Tank Assembliesincluding coupling, to enable upto 4 test drums to be driven at a time
Electrical Timer0-30 minFeatures

This test is conducted to evaluate the resistance of geosynthetic / geotextile to damage during installation due to dropping of sharp edged or sharp pointed stones on a geosynthetic/ geotextile directly. In this test, a geosynthetic, geotextile is clamped to yield a clear diameter of 150 mm and a brass cone of 45 degree included angle, having a weight of 1 kg, is dropped through a height of 500 mm. The diameter of the resultant hole is measured with a graduated conical device. The smaller the hole, the greater the resistance of geosynthetic /geotextile to damage. When used in combination with other direct tensile test results, it provides a convenient means of qualitative comparison.

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 hydrostatic pressure. A high value of the permeability of the geotextile also infers that partial clogging will not reduce the permeability. Both Constant and Falling Head permeameters are generally used for measuring normal permeability. Permeability is defined as the volumetric rate of flow of water per unit cross sectional area under unit hydraulic head across the plain of the geotextile. ASTM D 4491 - 85 specifies permeability test using Constant Head and Falling Head Permeameters. The constant head test is carried out using a head of 50 mm of water
Optional
Overhead Tank
Loading unit, 300-kPa capacity

Ring and Ball Apparatus
Electrical heating, with a Heater and Energy Regulator, Suitable for operation on 230 V, 50 Hz, single phase, AC supply. Each unit is supplied with Bath of heat resistant glass
Tapered Rings - 2 Nos.
Ball Centring Guide - 2 Nos.
Steel Ballsof 9.5 mm dia - 2 Nos
Ring holder - 1 No.
Electric Heater (Hot Plate - 1 No.
Extra
Thermometer IP 60C
Range: 2 C to 80 C
Thermometer IP 61C
Range: 30 C to 200 C

IS: 10082
The instrument is designed to test specimens from 50 mm dia to 100 mm dia having thickness equal to half the diameter. A pair of loading jaws, designed so as to contact a disc shaped sample at diametrically opposed surfaces over an arc of contact of about 10 degrees at failure, is supplied. The set of jaws supplied with the equipment is designed for 50 mm dia specimen and therefore it is essential to order jaws for respective sizes, if other diameter samples are to be tested. A set of plain platens are provided with the jack which enable testing of cube and circular specimens up to 50 mm size for compressive strength. The outfit consists of
Loading Framefitted with hand operated Hydraulic Loading Jack of 200 KN capacity provided with self-retracting Piston, pair of Plane Platens
Pair of Semi-Circular Jawsfor 50 mm dia samples
Load Gauge0-200 kN x 2 kN capacity, provided with maximum Load Indicator
Extras
Pair of Jawsfor 60 mm dia samples
Pair of Jawsfor 70 mm dia samples
Pair of Jawsfor 80 mm dia samples
Pair of Jawsfor 90 mm dia samples
Pair of Jawsfor 100 mm dia samples.

IS: 10050-1981

• For determination of resistance offered by rock to weathering and disintegration when subjected to immersion in water
• Facility to test upto four sets of samples
• Quick couplings for assembly and removal of drums

The apparatus consists of a motor on baseboard capable of driving two or more drums at a speed of 20 rpm. A suitable number of plastic water troughs, each designed to contain a test drum with quick release drive assemblies, permit 1 to 4 drums to be driven at one time. The test drums are supported on water lubricated bearings allowing 40 mm unobstructed clearance below the drum and a trough water level 20 mm below the axis of the drum. Drums are made of brass and comprise 2 mm wire mesh cylinders of 140 mm dia and 100 mm length. The equipment consists of
Base Board with Motor Drive assembly with two drum and tank assemblies. Suitable for working at 220 V, Single phase, AC supply.
Extra
Pair of Drums and Tank Assembliesincluding coupling, to enable upto 4 test drums to be driven at a time
Electrical Timer0-30 minFeatures

This test is conducted to evaluate the resistance of geosynthetic / geotextile to damage during installation due to dropping of sharp edged or sharp pointed stones on a geosynthetic/ geotextile directly. In this test, a geosynthetic, geotextile is clamped to yield a clear diameter of 150 mm and a brass cone of 45 degree included angle, having a weight of 1 kg, is dropped through a height of 500 mm. The diameter of the resultant hole is measured with a graduated conical device. The smaller the hole, the greater the resistance of geosynthetic /geotextile to damage. When used in combination with other direct tensile test results, it provides a convenient means of qualitative comparison.

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 hydrostatic pressure. A high value of the permeability of the geotextile also infers that partial clogging will not reduce the permeability. Both Constant and Falling Head permeameters are generally used for measuring normal permeability. Permeability is defined as the volumetric rate of flow of water per unit cross sectional area under unit hydraulic head across the plain of the geotextile. ASTM D 4491 - 85 specifies permeability test using Constant Head and Falling Head Permeameters. The constant head test is carried out using a head of 50 mm of water
Optional
Overhead Tank
Loading unit, 300-kPa capacity