-Drop Test(Cone Puncture Test Apparatus)

It is based on puncture strength phenomenan. The specimen is clamped to obtain an inside dia of 150mm and a Brass Cone of weight 1kg is dropped from 500mm height. The dia of resultant hole is measured. The puncture strength measured reflects the fabric quality to withstand aggregate penetration.

-Cross Permeability Test Apparatus

This again is tested by Constant and falling head permeameters. Permeability of geotextile should be more than permeability of soil because water is suppose to fall freely from soil through the fabric without building any hydrostatic pressure, also partial clogging should not reduce the flow of water.

-Dry Sieve Test Apparatus

Soil retention is definite in geotextile in drainage and filtering application. The test is performed for relative comparison among the geotextiles. The AOS (apparent opening size) is the size of through holes in geotextile, is meant for correlating geotextile pore structure to an equivalent steel mesh size.

-Gradient Ratio Test Apparatus

It is the ratio of hydraulic gradient through the geotextile plus 25.4 mm of the soil to that of hydraulic gradient through the adjacent 50.8mm of the soil. It is determined after 24 hours of flow.

-In-Plane Permeability Test Apparatus

Test is necessary for drainage application.The inplane permeability is also called transmissivity, which is volume rate of flow per unit width of geotextile .

-Thickness Gauge

Thickness is a property which controls the quality of many geotextiles and geosynthetics.

-Universal Testing System For Geotextile

Tensile property of geotextiles is important in different other applications. Testing of stress-strain of geotextile is influnced by details of testing procedures like method of gripping the fabric, rate of deformation, sample size/aspect ratio, initial preload and fabric conditioning.