EN ISO 10545-4:2019

SLOVENSKI STANDARD
01-julij-2019
Nadomešča:
SIST EN ISO 10545-4:2014
Keramične ploščice - 4. del: Ugotavljanje sile pri zlomu in upogibne trdnosti (ISO
10545-4:2019)
Ceramic tiles - Part 4: Determination of modulus of rupture and breaking strength (ISO
10545-4:2019)
Keramische Fliesen und Platten - Teil 4: Bestimmung der Biegefestigkeit und der
Bruchlast (ISO 10545-4:2019)
Carreaux et dalles céramiques - Partie 4: Détermination de la résistance à la flexion et
de la force de rupture (ISO 10545-4:2019)
Ta slovenski standard je istoveten z: EN ISO 10545-4:2019
ICS:
91.100.23 Keramične ploščice Ceramic tiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 10545-4
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2019
EUROPÄISCHE NORM
ICS 91.100.23 Supersedes EN ISO 10545-4:2014
English Version
Ceramic tiles - Part 4: Determination of modulus of
rupture and breaking strength (ISO 10545-4:2019)
Carreaux et dalles céramiques - Partie 4: Keramische Fliesen und Platten - Teil 4: Bestimmung
Détermination de la résistance à la flexion et de la force der Biegefestigkeit und der Bruchlast (ISO 10545-
de rupture (ISO 10545-4:2019) 4:2019)
This European Standard was approved by CEN on 15 February 2019.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10545-4:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10545-4:2019) has been prepared by Technical Committee ISO/TC 189
"Ceramic tile" in collaboration with Technical Committee CEN/TC 67 “Ceramic tiles” the secretariat of
which is held by UNI.
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 September 2019, and conflicting national standards
shall be withdrawn at the latest by September 2019.
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 ISO 10545-4:2014.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 10545-4:2019 has been approved by CEN as EN ISO 10545-4:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 10545-4
Fourth edition
2019-02
Ceramic tiles —
Part 4:
Determination of modulus of rupture
and breaking strength
Carreaux et dalles céramiques —
Partie 4: Détermination de la résistance à la flexion et de la force
de rupture
Reference number
ISO 10545-4:2019(E)
©
ISO 2019
ISO 10545-4:2019(E)
© ISO 2019
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.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 10545-4:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Test specimens. 3
7 Procedure. 6
8 Calculation . 6
9 Test report . 7
Bibliography . 8
ISO 10545-4:2019(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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
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 189, Ceramic tile.
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.
This fourth edition cancels and replaces the third edition (ISO 10545-4:2014), which has been
technically revised. The main changes compared to the previous edition are as follows:
— test specimens are tested in different format size according to their work size thickness that can be
minor or greater/equal than 7,5 mm;
— the minimum number of specimen to be tested has been changed.
A list of all parts in the ISO 10545 series can be found on the ISO website.
iv © ISO 2019 – All rights reserved

INTERNATIONAL STANDARD ISO 10545-4:2019(E)
Ceramic tiles —
Part 4:
Determination of modulus of rupture and breaking
strength
1 Scope
This document specifies a test method for determining the modulus of rupture and breaking strength
of all ceramic tiles.
NOTE ISO 13006 provides property requirements for tiles and other useful information on these products.
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 48-2, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between
10 IRHD and 100 IRHD
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
breaking load
F
force necessary to cause the test specimen to break, as read from the pressure gauge (see Figure 1)
3.2
breaking strength
S
force obtained by multiplying the breaking load (3.1) by the ratio (span between support rods)/(width
of the test specimen)
3.3
modulus of rupture
R
quantity obtained by dividing the calculated breaking strength (3.2) by the square of the minimum
thickness along the broken edge
3.4
work size thickness
thickness of the tile specified by the manufacturer
ISO 10545-4:2019(E)
Key
d diameter of rod
L long side of tile
l overlap of tile beyond the edge supports
l span between the support rods
t thickness of rubber
Figure 1 — Application of load to test specimens
4 Principle
Determination of the breaking load, breaking strength, and modulus of rupture of a tile by applying a
force at a specified rate to the centre of the tile, the point of application being in contact with the proper
surface of the tile.
5 Apparatus
5.1 Drying oven, capable of being operated at (105 ± 5) °C.
Microwave, infrared or other drying systems can be used provided that it has been determined that
equal results are obtained.
5.2 Recording pressure gauge, accurate to 2,0 %.
5.3 Two cylindrical support rods, made of metal, the parts in contact with the test specimens being
covered with rubber having a hardness of (50 ± 5) IRHD, measured in accordance with ISO 48-2.
One rod shall be slightly pivotable (see Figure 2) and the other shall be slightly rotatable about its own
axis. See Table 1 for relevant dimensions.
2 © ISO 2019 – All rights reserved

ISO 10545-4:2019(E)
Table 1 — Diameter of rods, d, thickness of rubber, t, and overlap of tile beyond the edge
supports, l
Dimensions in millimetres
Long side of tile Diameter of rod Thickness of rubber Overlap of tile beyond
the edge supports
L d t l
18 ≤ L < 48 5 ± 1 1 ± 0,2 2 ± 1
48 ≤ L < 95 10 ± 1 2,5 ± 0,5 5 ± 3
L ≥ 95 20 ± 1 5 ± 1 10 ± 5
5.4 Central cylindrical rod, of the same diameter as the support rods (5.3) and covered with the same
rubber, for transmission of the load.
This rod shall also b
...