ISO/TR 13438:1999
(Main)Geotextiles and geotextile-related products— Screening test method for determining the resistance to oxidation at elevated oxygen pressure
Geotextiles and geotextile-related products— Screening test method for determining the resistance to oxidation at elevated oxygen pressure
Géotextiles et produits apparentés — Méthode de détermination de la résistance à l'oxydation à pression d'oxygène élevée
General Information
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Standards Content (Sample)
TECHNICAL ISO/TR
REPORT 13438
First edition
1999-02-15
Geotextiles and geotextile-related
products — Screening test method for
determining the resistance to oxidation
Géotextiles et produits apparentés — Méthode d'essai pour
la détermination de la résistance à l'oxydation
A
Reference number
ISO/TR 13438:1999(E)
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ISO/TR 13438:1999(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
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(IEC) on all matters of electrotechnical standardization.
The main task of technical committees is to prepare International
Standards, but in exceptional circumstances a technical committee may
propose the publication of a Technical Report of one of the following types:
— type 1, when the required support cannot be obtained for the
publication of an International Standard, despite repeated efforts;
— type 2, when the subject is still under technical development or where
for any other reason there is the future but not immediate possibility of
an agreement on an International Standard;
— type 3, when a technical committee has collected data of a different
kind from that which is normally published as an International Standard
(“state of the art”, for example).
Technical Reports of types 1 and 2 are subject to review within three years
of publication, to decide whether they can be transformed into International
Standards. Technical Reports of type 3 do not necessarily have to be
reviewed until data they provide are considered to be no longer valid or
useful.
Attention is drawn to the possibility that some of the elements of this
Technical Report may be the subject of patent rights. ISO shall not be held
responsible for identifying any or all such patent rights.
© ISO 1999
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
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Internet iso@iso.ch
Printed in Switzerland
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©
ISO ISO/TR 13438:1999(E)
ISO/TR 13438, which is a Technical Report of type 2, was prepared by the
European Committee for Standardization (CEN) in collaboration with ISO
Technical Committee TC 38, Textiles, Subcommittee SC 21, Geotextiles, in
accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
Throughout the text of this document, read “.this European prestandard.”
to mean “.this Technical Report.”.
This document is being issued in the Technical Report (type 2) series of
publications (according to subclause G.3.2.2 of Part 1 of the ISO/IEC
Directives, 1995) as a “prospective standard for provisional application” in
the field of Geotextiles because there is an urgent need for guidance on
how standards in this field should be used to meet an identified need.
This document is not to be regarded as an “International Standard”. It is
proposed for provisional application so that information and experience of
its use in practice may be gathered. Comments on the content of this
document should be sent to the ISO Central Secretariat.
A review of this Technical Report (type 2) will be carried out not later than
three years after its publication with the options of: extension for another
three years; conversion into an International Standard; or withdrawal.
Annex ZZ provides a list of corresponding International and European
Standards for which equivalents are not given in the text.
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©
ISO/TR 13438:1999(E) ISO
Foreword
The text of ENV ISO 13438:1999 has been prepared by Technical Committee
CEN/TC 189 "Geotextiles and geotextile-related products", the secretariat of which is
held by IBN, in collaboration with Technical Committee ISO/TC 38 "Textiles".
According to the CEN/CENELEC Internal Regulations, the national standards
organizations of the following countries are bound to announce this European
Prestandard: Austria, Belgium, Czech Republic, Denmark, Finland, France,
Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and the United Kingdom.
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ISO ISO/TR 13438:1999(E)
Introduction
In many civil engineering applications geotextiles and geotextile-related products
may be in contact with water or aqueous solutions in the present soil environment. At
the same time, in specific parts of the construction the geotextiles or geotextile-
related products may be exposed to slowly diffusing oxygen in the soil.
The presence of oxygen gives rise to a very slow oxidative degradation process.
Polyolefin materials such as polypropylene and polyethylene may be relatively more
sensitive to oxidative degradation than polyesters, depending on the formulation of
the material and the circumstances in use.
It is the purpose of this prestandard to provide a method for screening the resistance
of geotextiles and geotextile-related products to oxidation in service up to 25 years.
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ISO ISO/TR 13438:1999(E)
1 Scope
This European prestandard specifies a test method for screening the resistance of
geotextiles and geotextile-related products to oxidation. The test is applicable to
polypropylene and polyethylene based products.
The data are suitable for screening but not for deriving performance data such as
lifetime unless supported by further evidence.
2 Normative references
This European prestandard 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 publicati
...
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