Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO document should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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This document was prepared by Technical Committee ISO/TC 221, Geosynthetics, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 189, Geosynthetics, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 10318-1:2015), which has been technically revised. It also incorporates the Amendment ISO 10318-1:2015/Amd 1:2018.

The main changes are as follows:

modification of definitions for reinforcement (3.1.4) and stress relief (3.1.8);
addition of the following new terms defining products: geomat (3.2.6.2), geospacer (3.2.6), geocuspate (3.2.6.1), geomembrane (3.2.8.2), geosynthetic clay liner (3.2.8.3.1), bituminous geomembrane (3.2.8.4.1), geosynthetic cementitious composite (3.2.11), and geofoam (3.2.12);
addition of the following new definitions for properties: energy absorption (3.3.4.4) and energy absorption index (3.3.4.5).

A list of all parts in the ISO 10318 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

1 Scope

This document defines terms related to the functions, products, and properties in geosynthetics, and terms used in International Standards on geosynthetics.

2 Normative references

3 Terms and definitions

3.1 Terms related to functions

3.2 Terms related to products

3.3 Terms related to properties

3.4 Other terms

ISO 10318-1:2026

Geosynthetics — - Part 1: Vocabulary

Current

Published:

9 Jan 2026

1 Scope