SIST EN ISO 16534:2020
(Main)Thermal insulating products for building applications - Determination of compressive creep (ISO 16534:2020)
Thermal insulating products for building applications - Determination of compressive creep (ISO 16534:2020)
This document specifies the equipment and test method for determining the compressive creep of specimens under various conditions of stress.
This document is applicable to thermal insulating products.
Wärmedämmstoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei Druckbeanspruchung (ISO 16534:2020)
Dieses Dokument legt Prüfeinrichtungen und das Prüfverfahren zur Bestimmung des Kriechverhaltens von Probekörpern bei Druckbeanspruchung mit verschiedenen Laststufen fest.
Dieses Dokument gilt für Wärmedämmstoffe.
Produits isolants thermiques destinés aux applications du bâtiment - Détermination du fluage en compression (ISO 16534:2020)
Le présent document spécifie l'équipement et les méthodes d'essai permettant de déterminer le fluage en compression d'éprouvettes soumises à différentes conditions de contrainte.
Le présent document s'applique aux produits isolants thermiques.
Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje lezenja pod tlačno obremenitvijo (ISO 16534:2020)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 16534:2020
01-oktober-2020
Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje lezenja pod
tlačno obremenitvijo (ISO 16534:2020)
Thermal insulating products for building applications - Determination of compressive
creep (ISO 16534:2020)
Wärmedämmstoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei
Druckbeanspruchung (ISO 16534:2020)
Produits isolants thermiques destinés aux applications du bâtiment - Détermination du
fluage en compression (ISO 16534:2020)
Ta slovenski standard je istoveten z: EN ISO 16534:2020
ICS:
91.100.60 Materiali za toplotno in Thermal and sound insulating
zvočno izolacijo materials
SIST EN ISO 16534:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 16534:2020
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SIST EN ISO 16534:2020
EN ISO 16534
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2020
EUROPÄISCHE NORM
ICS 91.100.60
English Version
Thermal insulating products for building applications -
Determination of compressive creep (ISO 16534:2020)
Produits isolants thermiques destinés aux applications Wärmedämmstoffe für das Bauwesen - Bestimmung
du bâtiment - Détermination du fluage en compression des Langzeit-Kriechverhaltens bei
(ISO 16534:2020) Druckbeanspruchung (ISO 16534:2020)
This European Standard was approved by CEN on 22 June 2020.
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, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16534:2020 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 16534:2020
EN ISO 16534:2020 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 16534:2020
EN ISO 16534:2020 (E)
European foreword
This document (EN ISO 16534:2020) has been prepared by Technical Committee ISO/TC 163 "Thermal
performance and energy use in the built environment" in collaboration with Technical Committee
CEN/TC 88 “Thermal insulating materials and products” the secretariat of which is held by DIN.
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 January 2021, and conflicting national standards shall
be withdrawn at the latest by January 2021.
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.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 16534:2020 has been approved by CEN as EN ISO 16534:2020 without any modification.
3
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SIST EN ISO 16534:2020
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SIST EN ISO 16534:2020
INTERNATIONAL ISO
STANDARD 16534
Second edition
2020-06
Thermal insulating products
for building applications —
Determination of compressive creep
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination du fluage en compression
Reference number
ISO 16534:2020(E)
©
ISO 2020
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SIST EN ISO 16534:2020
ISO 16534:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 16534:2020
ISO 16534:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Principle . 3
6 Apparatus . 3
7 Test specimens. 4
7.1 Selection of test specimens . 4
7.2 Dimensions of test specimens . 4
7.3 Number of test specimens . 5
7.4 Preparation of test specimens . 5
7.5 Conditioning of test specimens . 5
8 Procedure. 5
8.1 Test conditions . 5
8.2 Stress selection . 6
8.3 Test procedure . 6
8.4 Duration of test . 8
9 Calculation and expression of results . 8
10 Accuracy of measurement . 8
11 Test report . 8
Annex A (normative) Calculation method .10
Annex B (informative) Example of a linear regression analysis .13
Bibliography .16
© ISO 2020 – All rights reserved iii
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SIST EN ISO 16534:2020
ISO 16534:2020(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 Committee ISO/TC 163, Thermal performance and
energy use in the built environment, Subcommittee SC 1, Test and measurement methods, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 88, Thermal
insulating materials and products, in accordance with the Agreement on technical cooperation between
ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 16546:2012), which has been technically
revised. The main changes compared to the previous edition are as follows:
— modification of Figure 1;
— editorial modifications.
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 © ISO 2020 – All rights reserved
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SIST EN ISO 16534:2020
INTERNATIONAL STANDARD ISO 16534:2020(E)
Thermal insulating products for building applications —
Determination of compressive creep
1 Scope
This document specifies the equipment and test method for determining the compressive creep of
specimens under various conditions of stress.
This document is applicable to thermal insulating 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 29469, Thermal insulating products for building applications — Determination of compression
behaviour
ISO 29768, Thermal insulating products for building applications — Determination of linear dimensions of
test specimens
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
thickness
linear dimension measured perpendicular to the planes of length and width
3.2
compressive stress
σ
c
ratio of the compressive force to the initial cross-sectional surface area of the test specimen
3.3
deformation
X
reduction in thickness (3.1) of the test specimen
3.4
relative deformation
ε
ratio of the deformation (3.3) of the test specimen X, and its thickness (3.1) d , measured in the direction
s
of loading
© ISO 2020 – All rights reserved 1
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SIST EN ISO 16534:2020
ISO 16534:2020(E)
3.5
compressive creep
X
ct
increase in deformation (3.3) of the test specimen over time whilst under a constant stress, at specified
conditions of temperature and humidity
X = X ‒ X
ct t 0
where
X is the deformation at time t;
t
X is the initial deformation (after 60 s from the beginning of loading).
0
Note 1 to entry: An illustration of the different thicknesses (3.1) and deformations is given in Figure 1.
Key
d original product thickness
d initial thickness of the test specimen
s
d thickness of the test specimen under the basic compressive stress of the loading device (‘dead weight’)
L
d thickness of the test specimen 60 s after the beginning of the loading process
0
X the initial deformation (after 60 s from the beginning of loading)
0
X increase in deformation of the test specimen over time whilst under a constant stress, at specified conditions
ct
of temperature and humidity
X total the deformation at selected time t
t 3
t time when dead wright is applied
1
t time when selected load is uniformly applied
2
t deformation at selected time
3
Y thickness
X time
In the illustration, d is used as a reference value for deformation measurements. If d is used as the reference
L s
value, the illustration can be used, omitting the column for d (see 8.3).
L
Figure 1 — Illustration of the different thicknesses and deformations
2 © ISO 2020 – All rights reserved
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SIST EN ISO 16534:2020
ISO 16534:2020(E)
4 Symbols
Symbol Description
d original product thickness
d thickness of the test specimen
S
d thickness of the test specimen under the basic compressive stress of the loading device ('dead
L
weight')
d thickness of the test specimen 60 s after the beginning of the loading process
0
d thickness of the test specimen at a given time, t
t
5 Principle
The compressive creep is determined by measuring the increase in deformation of a test specimen
under constant compressive stress and specified conditions of temperature, humidity and time.
6 Apparatus
6.1 Loading device, consisting of two flat plates, one of which shall be movable, arranged so that they
compress the test specimen in a vertical direction. The movable plate shall be guided in such a manner as
to be self-aligning. The plates shall be capable of being loaded smoothly and without distortion so that,
during the test, the static stress does not change by more than +5 %.
6.2 Measuring device (e.g. dial gauge), capable of determining the distance between the two plates,
i.e. the deformation of the test specimen, to an accuracy of 0,01 mm.
6.3 Suitable damping measures, to ensure the effects of external vibration are minimized (e.g. a
substantial foundation and anchoring of the apparatus support).
Examples of the testing apparatus are given in Figure 2.
© ISO 2020 – All rights reserved 3
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SIST EN ISO 16534:2020
ISO 16534:2020(E)
Example of device type 1 Example of device type 2
Key
1 displacement transducer or dial gauge 4 test specimen
2 loading bridge 5 support beam
3 load distribution plate (movable, self-aligning) 6 loading by weights
Figure 2 — Examples of test apparatus
7 Test specimens
7.1 Selection of test specimens
The test specimens for determining the compressive creep shall be taken from the same sample, with
the same preparation as the test specimens used for the compression test as specified in ISO 29469.
The method for selecting the test specimens shall be as specified in the relevant product standard.
NOTE In the absence of a product standard or any other technical specification, the method for selection of
the test specimens can be agreed between parties.
7.2 Dimensions of test specimens
The thickness of test specimens shall be equal to the original product thickness. The width of the test
specimens shall not be less than their thickness. Products with facings or integral moulded skins which
are intended to be retained in use shall be tested with these faces or skins intact.
4 © ISO 2020 – All rights reserved
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SIST EN ISO 16534:2020
ISO 16534:2020(E)
Test specimens shall not be layered to produce a greater thickness for testing.
The test specimens shall be cut squarely and have sides with the following recommended dimen
...
SLOVENSKI STANDARD
oSIST prEN ISO 16534:2019
01-maj-2019
7RSORWQRL]RODFLMVNLSURL]YRGL]DXSRUDERYJUDGEHQLãWYX'RORþDQMHOH]HQMDSRG
WODþQRREUHPHQLWYLMR ,62',6
Thermal insulating products for building applications - Determination of compressive
creep (ISO/DIS 16534:2019)
Wärmedämmstoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei
Druckbeanspruchung (ISO/DIS 16534:2019)
Produits isolants thermiques destinés aux applications du bâtiment - Détermination du
fluage en compression (ISO/DIS 16534:2019)
Ta slovenski standard je istoveten z: prEN ISO 16534
ICS:
91.100.60 0DWHULDOL]DWRSORWQRLQ Thermal and sound insulating
]YRþQRL]RODFLMR materials
oSIST prEN ISO 16534:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 16534:2019
---------------------- Page: 2 ----------------------
oSIST prEN ISO 16534:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16534
ISO/TC 163/SC 1 Secretariat: DIN
Voting begins on: Voting terminates on:
2019-03-19 2019-06-11
Thermal insulating products for building applications —
Determination of compressive creep
Produits isolants thermiques destinés aux applications du bâtiment — Détermination du fluage en
compression
ICS: 91.100.60
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16534:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
---------------------- Page: 3 ----------------------
oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
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
---------------------- Page: 4 ----------------------
oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
6 Test specimens. 4
6.1 Selection of test specimens . 4
6.2 Dimensions of test specimens . 4
6.3 Number of test specimens . 4
6.4 Preparation of test specimens . 4
6.5 Conditioning of test specimens . 5
7 Procedure. 5
7.1 Test conditions . 5
7.2 Stress selection . 5
7.3 Test procedure . 5
7.4 Duration of test . 7
8 Calculation and expression of results . 7
9 Accuracy of measurement . 7
10 Test report . 8
Annex A (normative) Calculation method . 9
Annex B (informative) Example of a linear regression analysis .12
Bibliography .16
© ISO 2019 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
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 document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16534 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in
the built environment, Subcommittee SC 1, Test and measurement methods.
ISO 16534 includes the original EN 1606 prepared by Technical Committee CEN/TC 88 “Thermal
insulating materials and products”, with the following clauses modified to reflect the conditions for
tropical countries:
— Clause 6.5: Conditioning of test specimens;
— Clause 7.1: Test conditions;
— Clause 10: Test report.
iv © ISO 2019 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
Introduction
ISO 16534 is one of a series of existing European Standards on test methods which were adopted by
ISO. This group of International Standards comprises the following group of interrelated standards:
ISO Title Respective
EN
standard
ISO 12344 Thermal insulating products for building applications — Determination of EN 12089
bending behaviour
ISO 12968 Thermal insulation products for building applications — Determination of the EN 13495
pull-off resistance of external thermal insulation composite systems (ETICS)
(foam block test)
ISO 29465 Thermal insulating products for building applications — Determination of EN 822
length and width
ISO 29466 Thermal insulating products for building applications — Determination of EN 823
thickness
ISO 29467 Thermal insulating products for building applications — Determination of EN 824
squareness
ISO 29468 Thermal insulating products for building applications — Determination of EN 825
flatness
ISO 29469 Thermal insulating products for building applications — Determination of EN 826
compression behaviour
ISO 29470 Thermal insulating products for building applications — Determination of EN 1602
the apparent density
ISO 29471 Thermal insulating products for building applications — Determination of di- EN 1603
mensional stability under constant normal laboratory conditions (23 °C/50 %
relative humidity)
ISO 29472 Thermal insulating products for building applications — Determination of EN 1604
dimensional stability under specified temperature and humidity conditions
ISO 29764 Thermal insulating products for building applications — Determination of EN 1605
deformation under specified compressive load and temperature conditions
ISO 29765 Thermal insulating products for building applications — Determination of EN 1607
tensile strength perpendicular to faces
ISO 29766 Thermal insulating products for building applications — Determination of EN 1608
tensile strength parallel to faces
ISO 29767 Thermal insulating products for building applications — Determination of EN 1609
short-term water absorption by partial immersion
ISO 29768 Thermal insulating products for building applications — Determination of EN 12085
linear dimensions of test specimens
ISO 29769 Thermal insulating products for building applications — Determination of EN 12430
behaviour under point load
© ISO 2019 – All rights reserved v
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oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
ISO 29770 Thermal insulating products for building applications — Determination of EN 12431
thickness for floating-floor insulating products
ISO 29771 Thermal insulating materials for building applications — Determination of EN 13820
organic content
ISO 29803 Thermal insulation products for building applications — Determination of the EN 13497
resistance to impact of external thermal insulation composite systems (ETICS)
ISO 29804 Thermal insulation products for building applications — Determination of EN 13494
the tensile bond strength of the adhesive and of the base coat to the thermal
insulation material
ISO 29805 Thermal insulation products for building applications — Determination of EN 13496
the mechanical properties of glass fibre meshes
ISO 16534 Thermal insulating products for building applications — Determination of EN 1606
compressive creep
ISO 16535 Thermal insulating products for building applications — Determination of EN 12087
long-term water absorption by immersion
ISO 16536 Thermal insulating products for building applications — Determination of EN 12088
long-term water absorption by diffusion
ISO 16537 Thermal insulating products for building applications — Determination of EN 12090
shear behaviour
ISO 16546 Thermal insulating products for building applications —Determination of EN 12091
freeze–thaw resistance
ISO 16544 Thermal insulating products for building applications — Conditioning to EN 12429
moisture equilibrium under specified temperature and humidity conditions
ISO 16545 Thermal insulating products for building applications — Determination of EN 13793
behaviour under cyclic loading
A further group of existing European Standards on test methods for products used to insulate building
equipment and industrial installations comprises the following group of interrelated International
Standards:
ISO 12623 Thermal insulating products for building equipment and industrial installa- EN 13472
tions — Determination of short-term water absorption by partial immersion
of preformed pipe insulation
ISO 12624 Thermal insulating products for building equipment and industrial installa- EN 13468
tions — Determination of trace quantities of water soluble chloride, fluoride,
silicate, sodium ions and pH
ISO 12628 Thermal insulating products for building equipment and industrial installa- EN 13467
tions — Determination of dimensions, squareness and linearity of preformed
pipe insulation
ISO 12629 Thermal insulating products for building equipment and industrial installa- EN 13469
tions — Determination of water vapour transmission properties of preformed
pipe insulation
vi © ISO 2019 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 16534:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 16534:2019(E)
Thermal insulating products for building applications —
Determination of compressive creep
1 Scope
This document specifies the equipment and test method for determining the compressive creep of
specimens under various conditions of stress.
This document is applicable to thermal insulating products.
2 Normative references
The following referenced documents are indispensable for the application 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 29469, Thermal insulating products for building applications — Determination of compression
behaviour
ISO 29768, Thermal insulating products for building applications — Determination of linear dimensions of
test specimens
ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method
for the determination of repeatability and reproducibility of a standard measurement method
3 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1
thickness
linear dimension measured perpendicular to the planes of length and widthd is the original product
thickness;d is the thickness of the test specimen;d is the thickness of the test specimen under the
S L
basic compressive stress of the loading device ('deadweight');d is the thickness of the test specimen
0
60 s after the beginning of the loading process;d is the thickness of the test specimen at a given time, t
t
3.2
compressive stress
σ
c
ratio of the compressive force to the initial cross sectional surface area of the test specimen
3.3
deformation
X
reduction in thickness of the test specimen
3.4
relative deformation
ε
ratio of the deformation of the test specimen X, and its thickness d , measured in the direction of loading
s
© ISO 2019 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
3.5
compressive creep
X
ct
increase in deformation of the test specimen over time whilst under a constant stress, at specified
conditions of temperature and humidity
X = X − X
ct t 0
where
X is the deformation at time t;
t
X is the initial deformation (after 60 s from the beginning of loading)
0
An illustration of the different thicknesses and deformations is given in Figure 1
Key
d original product thickness
d initial thickness of the test specimen
s
d thickness of the test specimen under the basic compressive stress of the loading device (‘dead weight’)
L
d thickness of the test specimen 60 s after the beginning of the loading process
0
X the initial deformation (after 60 s from the beginning of loading).
0
X increase in deformation of the test specimen over time while under a constant stress, at specified conditions
ct
of temperature and humidity
X total the deformation at selected time t
t 3
t Time when dead wright is applied
1
t Time when selected load is uniformly applied
2
t Deformation at selected time
3
In the illustration, d is used as a reference value for deformation measurements. If d is used as the reference value,
L s
the illustration can be used, omitting the column for d (see 7.3).
L
Figure 1 — Illustration of the different thicknesses and deformations
2 © ISO 2019 – All rights reserved
---------------------- Page: 10 ----------------------
oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
4 Principle
The compressive creep is determined by measuring the increase in deformation of a test specimen
under constant compressive stress and specified conditions of temperature, humidity and time.
5 Apparatus
5.1 Loading device, consisting of two flat plates, one of which shall be movable, arranged so that they
compress the test specimen in a vertical direction. The movable plate shall be guided in such a manner as
to be self-aligning. The plates shall be capable of being loaded smoothly and without distortion so that,
during the test, the static stress does not change by more than ± 5 %.
5.2 Measuring device (e.g. dial gauge), capable of determining the distance between the two plates,
i.e. the deformation of the test specimen, to an accuracy of 0,01 mm.
5.3 Suitable damping measures, to ensure the effects of external vibration are minimized (e.g. a
substantial foundation and anchoring of the apparatus support).
Examples of the testing apparatus are given in Figure 2.
a) b)
Key
1 displacement transducer or dial gauge 4 test specimen
2 loading bridge 5 support beam
3 load distribution plate (movable, self-aligning) 6 loading by weights
Figure 2 — Examples of test apparatus
© ISO 2019 – All rights reserved 3
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oSIST prEN ISO 16534:2019
ISO/DIS 16534:2019(E)
6 Test specimens
6.1 Selection of test specimens
The test specimens for determining the compressive creep shall be taken from the same sample, with
the same preparation as the test specimens used for the compression test as specified in EN 826.
The method for selecting the test specimens shall be as specified in the relevant product standard.
NOTE In the absence of a product standard or any other technical specification, the method for selection of
the test specimens can be agreed between parties.
6.2 Dimensions of test specimens
The thickness of test specimens shall be equal to the orig
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