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ASTM D4491-99A(2014)e1
- Standard Test Methods for Water Permeability of Geotextiles by Permittivity
- standard by ASTM International, 01/01/2014
- Publisher: 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 two procedures: the constant head method and the falling head method.