ISO 13426-1:2003

Geotextiles and geotextile-related products — Strength of internal structural junctions — Part 1: Geocells

Géotextiles et produits apparentés — Résistance des liaisons de structures internes — Partie 1: Géosynthétiques alvéolaires

General Information

• Status: Withdrawn
• Publication Date: 08-Jan-2003
• Withdrawal Date: 08-Jan-2003
• ICS: 59.080.70 - Geotextiles
• Technical Committee: ISO/TC 221 - Geosynthetics
• Drafting Committee: ISO/TC 221 - Geosynthetics
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 15-Nov-2019

Relations

• Revised: ISO 13426-1:2019 - Geotextiles and geotextile-related products — Strength of internal structural junctions — Part 1: Geocells
• Effective Date: 04-Nov-2015
• Consolidates: ISO 3310-2:1982 - Test sieves — Technical requirements and testing — Part 2: Test sieves of metal perforated plate
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 13426-1
First edition
2003-01-15

Geotextiles and geotextile-related
products — Strength of internal
structural junctions —
Part 1:
Geocells
Géotextiles et produits apparentés — Résistance des liaisons de
structures internes —
Partie 1: Géosynthétiques alvéolaires




Reference number
ISO 13426-1:2003(E)
©
ISO 2003

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ISO 13426-1:2003(E)
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ii © ISO 2003 – All rights reserved

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ISO 13426-1:2003(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this part of ISO 13426 may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13426-1 was prepared by the European Committee for Standardization (CEN) in collaboration with
Technical Committee ISO/TC 221, Geosynthetics, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
Throughout the text of this document, read ".this European Standard." to mean ".this International
Standard.".
ISO 13426 consists of the following parts, under the general title Geotextiles and geotextile-related
products — Strength of internal structural junctions:
— Part 1: Geocells
— Part 2: Geocomposites
© ISO 2003 – All rights reserved iii

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ISO 13426-1:2003(E)


Contents
page
Foreword.v
Introduction .vi
1 Scope .1
2 Normative references.1
3 Terms and definitions .1
4 Principle.1
4.1 Method A: Tensile shear test (Figure 1).2
4.2 Method B: Peeling test (Figure 2) .2
4.3 Method C: Splitting test (Figure 3) .2
4.4 Method D: Local overstressing test (Figure 4) .2
5 Conditioning of specimens .2
6 Test specimens.3
7 Apparatus.3
7.1 Tensile testing machine .3
7.2 Clamps .3
8 Test procedure.3
9 Calculations .4
9.1 General.4
9.2 Method A: Tensile shear .4
9.3 Method B: Peeling.4
9.4 Method C: Splitting.4
9.5 Method D: Local overstressing.5
10 Test report .5
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ISO 13426-1:2003(E)

Foreword

This document (EN ISO 13426-1:2003) has been prepared by Technical Committee CEN/TC 189 "Geosynthetics",
the secretariat of which is held by IBN, in collaboration with Technical Committee ISO/TC 221 "Geosynthetics".
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by July 2003, and conflicting national standards shall be withdrawn at the latest by
July 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
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ISO 13426-1:2003(E)


Introduction
Geocells are geotextile-related products composed of single strips interconnected in several possible ways
(extrusion, thermal bonding, gluing, hot melt, stitching, etc) to form a panel of adjacent cells, where generally the
contact between two elements occurs along lines or in specific points, and not uniformly on the whole surface.
These lines or points are referred to as "junctions".
A geocell junction may fail in four different ways:
1) by shear (see Figure 1): when failure is caused by a force parallel to the junction itself;
2) by peeling or delamination (see Figure 2): when failure is caused by a force, normal to the junction, which
separates the cells from each other at one edge of the junction;
3) by tensile stress (see Figure 3): when a force, normal to the junction, pulls away the two cells adjacent to the
junction;
4) by local overstressing (see e.g. Figure 4: geocells secured with pins) : when the fixation element locally
overstresses the junction, leading to a compression, shear or peel failure.
NOTE This can be considered as a performance property, in the same way as a tensile test on seams/joints.
It is therefore impossible to define one single testing method for measuring the junction strength of geocells. Hence
this standard includes the principles for testing the four failure mechanisms explained above. These principles
should be adapted to each single product. In order to avoid confusion about the interpretation of figures, reference
should be made to the exact test method in test reports and data sheets, e.g. EN ISO 13426-1, method A – shear
strength of internal structural junctions.
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ISO 13426-1:2003(E)
1 Scope
This standard describes four index test methods for the determination of the strength of internal structural junctions
of geocells under different loading conditions.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 963, Geotextiles and geotextile-related products - Sampling and
preparation of test specimens (ISO 9862:1990)
EN ISO 7500-1, Metallic materials - Verification of static uniaxial testing machines -
Part 1: Tension/compression testing machines (ISO 7500-1:1999)
ISO 554, Standard atmospheres for conditioning and/or testing –
Specifications
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply:
3.1
geocell
three-dimensional, permeable, polymeric (synthetic or natural) honeycomb or web structure made of strips linked in
a staggered pattern, used to hold soil particles, roots and small plants for erosion control and soil containment
applications in civil engineering
3.2
junction
point, line or area where two strips are connected to form the unit cells of a geocell structure
3.3
fastening system
system (staples, pegs, U-shaped bars, etc.) used to fix the geocells to the ground at single points
3.4
nominal cell size
length L (in machine direction) and width W (in cross-machine direction) of the cell when opened according to the
c c
specification
4 Principle
Specimens of geocells are tested in accordance with one or more of the following four test methods representing
different stress mod
...