Facilities
About the Laboratory:
Geotextile laboratory provides
the testing of Geotextile material either woven or nonwoven and geosynthetic
material. There are various of testing facilities is available such as apparent
opening size tester (AOS), In plane water permeability tester, Gradient Ratio
tester, Cone drops tester and Direct shear/ pull out resistance tester in our
Geotextile laboratory.
Instrument
and Equipment available:
Sl. |
Instrument / Equipment |
Remarks |
1. |
Name of the instrument |
Cone drops tester To
determine the resistance of Geotextile to penetration by a steel cone dropped
from height. The degree of penetration is an indication of the behaviour of
the geotextile when sharp stones are dropped on its surface. |
Sl. |
Instrument /
Equipment |
Remarks |
1. |
Name of the instrument |
Direct shear tester The frictional shearing resistance at the interface
between the soil and the Geotextile enables the geotextile to resist pullout
failure and allows tensile forces to be carried by the soil/ geotextile
composite structure. There are two conventional laboratory tests to
determine the frictional behaviour of geotextile: - 1. Test method for measuring
geosynthetic pullout resistance in soil. 2. Test method for determining
the co- efficient of soil and geosynthetic or geosynthetic and geosynthetic
friction by direct shear method |
Sl. |
Instrument /
Equipment |
Remarks |
1. |
Name of the instrument |
Apparent opening size Tester This test method is used to indicate the apparent
opening size in a geotextile, which reflects the approximate largest opening
dimension available for soil to pass through. |
Sl. |
Instrument /
Equipment |
Remarks |
1. |
Name of the instrument |
In plane water permeability
Tester This test is necessary for drainage application. The
permeameters can be of parallel flow or radial flow type. In-plane
permeability is known as transmissivity which is defined as the volumetric
rateof flow per unit width of geotextile and unit hydraulic head. |
Sl. |
Instrument /
Equipment |
Remarks |
1. |
Name of the instrument |
Gradient ratio Tester This test is necessary for filtration i.e. Soil-
geotextile system permeability and clogging potential – the tendency for
fabric to lose permeability due to soil particles that have either lodged in
the fabric opening or have restrictive layer on the surface of the fabric. |
Contact Person:
Er. Manisha Hanuamant Jagadale
Scientist, Mechanical Processing
Division
Email- Manisha.jagadale@icar.gov.in