1.1 These test methods cover the determination of smallstrain tensile properties of geogrids and geotextiles by subjecting wide-width specimens to cyclic tensile loading.
1.2 These test methods (A, B, and C) allow for the determination of small-strain cyclic tensile modulus by the measurement of cyclic tensile load and elongation.
1.3 This test method is intended to provide properties for design. The test method was developed for mechanisticempirical pavement design methods requiring input of the reinforcement tensile modulus. The use of cyclic modulus from this test method for other applications involving cyclic loading should be evaluated on a case-by-case basis.
1.4 Three test methods (A, B, and C) are provided to determine small-strain cyclic tensile modulus on geogrids and geotextiles.
1.4.1 Test Method A—Testing a relatively wide specimen of geogrid in cyclic tension in kN/m (lbf/ft).
1.4.2 Test Method B—Testing multiple layers of a relatively wide specimen of geogrid in cyclic tension in kN/m (lbf/ft).
1.4.3 Test Method C—Testing a relatively wide specimen of geotextile in cyclic tension in kN/m (lbf/ft).
1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D7556-10(2019) Referenced Document
ASTM D123 Standard Terminology Relating to Textiles*, 2023-09-14 Update
ASTM D4354 Standard Practice for Sampling of Geosynthetics for Testing
ASTM D4439 Standard Terminology for Geosynthetics*, 2024-02-01 Update
ASTM D579/D579M Standard Practice for Greige Woven Glass Fabrics (Standard + Redline PDF Bundle)
ASTM D76/D76M Standard Specification for Tensile Testing Machines for Textiles*, 2021-07-01 Update
ASTM D7556-10(2019) history
2019ASTM D7556-10(2019) Standard Test Methods for Determining Small-Strain Tensile Properties of Geogrids and Geotextiles by In-Air Cyclic Tension Tests
2010ASTM D7556-10 Standard Test Methods for Determining Small-Strain Tensile Properties of Geogrids and Geotextiles by In-Air Cyclic Tension Tests