SIST EN ISO 10468:2023

SLOVENSKI STANDARD
01-oktober-2023
Nadomešča:
SIST EN 761:1997
Cevi iz duromernih materialov, okrepljenih s steklenimi vlakni (GRP) - Določanje
leznih lastnosti obroča v vlažnih in suhih pogojih (ISO 10468:2023)
Glass-reinforced thermosetting plastics (GRP) pipes - Determination of the ring creep
properties under wet or dry conditions (ISO 10468:2023)
Rohre aus glasfaserverstärkten duroplastischen Kunststoffen (GFK) - Ermittlung der
Ringkriecheigenschaften unter feuchten oder trockenen Bedingungen (ISO 10468:2023)
Tubes en plastiques thermodurcissables renforcés de verre (PRV) - Détermination des
propriétés de fluage annulaires en conditions humides ou sèches (ISO 10468:2023)
Ta slovenski standard je istoveten z: EN ISO 10468:2023
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
83.120 Ojačani polimeri Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 10468
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2023
EUROPÄISCHE NORM
ICS 23.040.20 Supersedes EN 761:1994, EN 761:1994/AC:1995
English Version
Glass-reinforced thermosetting plastics (GRP) pipes -
Determination of the ring creep properties under wet or
dry conditions (ISO 10468:2023)
Tubes en plastiques thermodurcissables renforcés de Rohre aus glasfaserverstärkten duroplastischen
verre (PRV) - Détermination des propriétés de fluage Kunststoffen (GFK) - Ermittlung der
annulaires en conditions humides ou sèches (ISO Ringkriecheigenschaften unter feuchten oder
10468:2023) trockenen Bedingungen (ISO 10468:2023)
This European Standard was approved by CEN on 14 November 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10468:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10468:2023) has been prepared by Technical Committee ISO/TC 138 "Plastics
pipes, fittings and valves for the transport of fluids" in collaboration with Technical Committee CEN/TC
155 “Plastics piping systems and ducting systems” the secretariat of which is held by NEN.
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 February 2024, and conflicting national standards
shall be withdrawn at the latest by February 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 761:1994.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 10468:2023 has been approved by CEN as EN ISO 10468:2023 without any modification.

INTERNATIONAL ISO
STANDARD 10468
Third edition
2023-07
Glass-reinforced thermosetting
plastics (GRP) pipes — Determination
of the ring creep properties under wet
or dry conditions
Tubes en plastiques thermodurcissables renforcés de verre (PRV) —
Détermination des propriétés de fluage annulaires en conditions
humides ou sèches
Reference number
ISO 10468:2023(E)
ISO 10468:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 10468:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 4
5 Apparatus . 4
5.1 Compressive loading machine . 4
5.2 Force application surfaces. 4
5.2.1 General arrangement. 4
5.2.2 Plates . 5
5.2.3 Beam bars . 5
5.3 Water container . 5
5.4 Measuring devices . 5
6 Test piece . 5
7 Number of test pieces .6
8 Determination of the dimensions of the test pieces . 6
9 Conditioning . 7
10 Procedure .7
11 Calculation . 7
11.1 Extrapolation of the deflection data . 7
11.2 Calculation of the long-term ring creep stiffness for position 1 . 8
11.3 Calculation of the creep factor . 8
12 Test report . 8
iii
ISO 10468:2023(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.
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).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves
for the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications,
in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/
TC 155, Plastics piping systems and ducting systems, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 10468:2018), which has been technically
revised.
The main changes are as follows:
— the Introduction has been deleted as the information is no longer relevant to this edition of the
document;
— in the test report, the “plot of measured deflection versus time” has been changed from an obligation
into an option of plotting deflection versus time or stiffness versus time;
— initial ring stiffness according to ISO 7685 can now be measured by constant load or constant
deflection.
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.
iv
INTERNATIONAL STANDARD ISO 10468:2023(E)
Glass-reinforced thermosetting plastics (GRP) pipes —
Determination of the ring creep properties under wet or
dry conditions
1 Scope
This document specifies methods for determining the ring creep properties for glass-reinforced
thermosetting plastics (GRP) pipes. Properties include the creep factor and the long-term creep
stiffness. Testing is performed under either wet (total immersion in water) or dry conditions.
Dry creep testing is typically performed for the assessment and control of raw material consistency.
Wet creep testing is typically undertaken to determine the long-term creep performance in simulated
use conditions.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3126, Plastics piping systems — Plastics components — Determ
...