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ASTM D7178-16e1
- Standard Practice for Determining the Number of Constrictions "m" of Non-Woven Geotextiles as a Complementary Filtration Property
- standard by ASTM International, 01/01/2016
- Publisher: ASTM
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1.1 This practice describes the procedure used along with existing test method to determine the number of constrictions m of mechanically bonded non-woven geotextiles, based on thickness, mass per unit area and fiber properties