Membrane seams addressed in new ASTM standard

February 1, 2007

The increased use of geomembranes as barrier materials to restrict liquid migration created a need for a test method to evaluate the quality of geomembrane seams produced by tape methods. ASTM International Committee D35 on Geosynthetics has met this need with the approval of the new standard D 7272, Test Method for Determining the Integrity …

Geotextile specifications

October 1, 2006

From the GMA Techline Subject: Definitions I am looking for information on geotextile specifications, specifically permittivity and permeability. Can you point me to a document? (John, New York) Reply: The specification that you want is AASHTO M288 that addresses various highway-related applications such as drainage and erosion control. Included are both of the parameters you …