ASTM D7406-20
Standard Test Method for Time-Dependent Compressive Deformation Under Constant Pressure for Geosynthetic Drainage Products

Standard No.

ASTM D7406-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D7406-20

Scope

1.1 This test method is used to determine the unconfined compressive deformation (consolidation) characteristics of drainage geotextiles, geocomposites, geonets, or any other geosynthetic associated with drainage at a constant temperature, when subjected to a constant compressive stress. 1.2 This test method is intended for use as an unconfined compressive performance deformation test only. For a detailed procedure on how to establish an index test, see EN ISO 25619-1. For performance tests, the specimen shall be subjected to the site-specific liquid, the site-specific stress (normal and potentially a tangential stress on the upper and parallel loading platen), or both. NOTE 1—Results achieved from unconfined compressive performance deformation testing may differ from testing performed under confined conditions. 1.3 Because of the changing nature of the geosynthetic industry and the wide variety of products already available, this particular test method may have to be slightly modified for unconfined compression deformation testing of some products. 1.4 The values given in SI units are to be considered as the standard. The values given in parentheses are for information only. 1.5 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. 1.6 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 D7406-20 Referenced Document

• ASTM A1030/A1030M Standard Practice for Measuring Flatness Characteristics of Steel Sheet Products*， 2021-05-01 Update
• ASTM D2990 Standard Test Methods for Tensile, Compressive, and Flexural Creep and Creep-Rupture of Plastics
• ASTM D4439 Standard Terminology for Geosynthetics*， 2024-02-01 Update
• ASTM D5199 Standard Test Method for Measuring the Nominal Thickness of Geosynthetics*， 2024-04-21 Update
• ASTM D5261 Standard Test Method for Measuring Mass per Unit Area of Geotextiles
• ASTM D6364 Standard Test Method for Determining the Short-Term Compression Behavior of Geosynthetics

ASTM D7406-20 history

• 2020 ASTM D7406-20 Standard Test Method for Time-Dependent Compressive Deformation Under Constant Pressure for Geosynthetic Drainage Products
• 2007 ASTM D7406-07(2012) Standard Test Method for Time-Dependent (Creep) Deformation Under Constant Pressure for Geosynthetic Drainage Products
• 2007 ASTM D7406-07 Standard Test Method for Time-Dependent (Creep) Deformation Under Constant Pressure for Geosynthetic Drainage Products