ASTM D7003/D7003M-03 (R2021) pdf free download.Standard Test Method for Strip Tensile Properties of Reinforced Geomembranes.
1.1 This test method is used to measure the strip tensile properties of reinforced geomembranes.
1 .2 The values stated in either SI units or inch-pound units are to he regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall he used independently of the other, and values from the two systems shall not he combined.
4. Significance and Use
4. 1 This test method evaluates strip tensile properties of reinforced geornembranes for the purposes of quality control, quality assurance, and research. In order to evaluate the full contribution of the reinforcement, testing is performed parallel to the directions of reinforcement. This Lest method is an index test and is not intended for design purposes.
5. Apparatus
5. 1 Tensile Testing Machine—Constant rate of extension (CRE) equipment meeting the requirements of Specification D761D76M. The load cell shall be accurate to within ± 1 % of the applied force. The drive mechanism shall be able to control the rate of extension to within ± 1 % of the targeted rate.
5.2 Grips—One of the grips must be self-aligning to compensate for uneven distribution of force across the specimen. The clamping force and the clamp surfaces shall hold the specimen firmly without causing damage. The clamps shall be capable of gripping a 25 mm 11 in.I by 25 mm [1 in.] area. This can be accomplished by either using 25 mm [1 in.]square clamp faces or by using clamps with dimensions of 25 mm by greater than 25 mm [1 in.] and crossing the clamps in the grips so that only a 25 mm [1 in.] by 25 mm [1 in.] area is gripped.
5.3 Recording Mechanism—The testing machine shall be equipped with equipment capable of producing a hard copy of the force versus displacement curve. Electronic data acquisition with printer capabilities or direct recording devices are acceptable.
6. Sampling, Test Specimens, and Test Units
6.1 Lot Sample—For the lot sample, take rolls of geomembrane per the applicable project specification, or as agreed upon between purchaser and supplier. Unless otherwise specified, refer to Practice D4354.ASTM D7003/D7003M pdf download.