ASTM D4491/D4491M-17
- Standard Test Methods for Water Permeability of Geotextiles by Permittivity
- standard by ASTM International, 01/01/2017
- Category: ASTM
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1.1 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 three procedures: the constant head and falling head methods using a water flow apparatus, and the air flow method using an air flow apparatus.
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