Determination of water permeability and permittivity test

Test Method Title:
Determination of water permeability and permittivity test

Method ID:
ASTM D4491

Material:
Geotextile and Geotextile related products

Test Property:
Flow rate per unit area

Description of Test:
A test specimen is clamped in a water permeability machine and water is supplied with 50mm head deference in the specimens and water flow volume and time are noted. Water permeability and Permittivity are calculated.

Preferred Test Sample Size:
1m x Full production width

Number of Test Specimens:
5 pcs

Test Specimen Size:
75mm diameter as per the requirement of laboratory apparatus.

Keywords:
Permeability, Permittivity, Flow rate