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ASTM D6636 | Textiles | Ply Adhesion Strength

ASTM D6636 is a test method used to determine the adhesion strength between reinforced geomembrane plies. It utilizes a T-Peel test technique in order to determine the force per unit width (adhesion strength) necessary to peel an individual ply from a laminated geomembrane material at an angle of 180 degrees.

Before conducting ASTM D6636, it is important to read the entire specification in the relevant ASTM publication.

ASTM D6636 | Textiles | Ply Adhesion Strength

  1. Prepare the test specimens as described in the test method, ensuring that they are cut parallel to the scrim of the reinforced geomembrane material.
  2. Separate plies of the geomembrane such that there are lengths of 1 in. to 2in. to be gripped during the test.
  3. Clamp the ends of the geomembrane plies into the grips of the testing machine, making sure the ends are centered and there is no twisting of the sample.
  4. Apply the tensile force to the specimen at the rate specified in the standard and record the force necessary to separate the plies over the specified distance.
  5. Take care to ensure that the plies are indeed peeling and not tearing during the test.
Calculations:
  • Ply Adhesion Strength

ASTM D6636 | Textiles | Ply Adhesion Strength

ASTM D6636 Recommended Equipment
Testing System
Fixturing
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