ISO 29769:2008
(Main)Thermal insulating products for building applications — Determination of behaviour under point load
Thermal insulating products for building applications — Determination of behaviour under point load
ISO 29769:2008 specifies equipment and procedures for determining the behaviour of products under a force applied to a small area of a test specimen at a given speed. ISO 29769:2008 is applicable to thermal insulating products. ISO 29769:2008 can be used to determine whether the products have sufficient strength to withstand the forces applied directly to them either during installation or during application, mainly caused by pedestrian traffic.
Produits isolants thermiques destinés aux applications du bâtiment — Détermination du comportement sous charge ponctuelle
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INTERNATIONAL ISO
STANDARD 29769
First edition
2008-11-01
Thermal insulating products for building
applications — Determination of
behaviour under point load
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination du comportement sous charge ponctuelle
Reference number
©
ISO 2008
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2008
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 either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2008 – All rights reserved
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle. 2
5 Apparatus . 2
6 Test specimens . 4
7 Procedure . 5
8 Calculation and expression of results. 6
9 Accuracy of measurement. 6
10 Test report . 7
Annex A (normative) Modifications to the general test method for cellular glass products . 8
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 29769 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 1, Test and measurement methods.
iv © ISO 2008 – All rights reserved
Introduction
This International Standard comprises the original EN 12430:1998 and its Amendment 1:2006 prepared by
Technical Committee CEN/TC 88, Thermal insulating materials and products, which has been amended by
ISO/TC 163/SC 1 with reference to conditioning and testing conditions in tropical countries.
This International Standard is one of a series of documents specifying test methods, based on existing
European Standards, that are being adopted by ISO. This “package” of standards includes the following group
of interrelated documents.
International Standard Respective
EN standard
ISO 29465, Thermal insulating products for building applications — Determination of length EN 822
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 flatness EN 825
ISO 29469, Thermal insulating products for building applications — Determination of EN 826
compression behaviour
ISO 29470, Thermal insulating products for building applications — Determination of the EN 1602
apparent density
ISO 29471, Thermal insulating products for building applications — Determination of EN 1603
dimensional 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 tensile EN 1607
strength perpendicular to faces
ISO 29766, Thermal insulating products for building applications — Determination of tensile EN 1608
strength parallel to faces
ISO 29767, Thermal insulating products for building applications — Determination of short- EN 1609
term water absorption by partial immersion
ISO 29768, Thermal insulating products for building applications — Determination of linear EN 12085
dimensions of test specimens
ISO 29769, Thermal insulating products for building applications — Determination of EN 12430
behaviour under point load
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 organic EN 13820
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 the EN 13494
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 the EN 13496
mechanical properties of glass fibre meshes
vi © ISO 2008 – All rights reserved
INTERNATIONAL STANDARD ISO 29769:2008(E)
Thermal insulating products for building applications —
Determination of behaviour under point load
1 Scope
This International Standard specifies equipment and procedures for determining the behaviour of products
under a force applied to a small area of a test specimen at a given speed. This International Standard is
applicable to thermal insulating products.
This International Standard can be used to determine whether the products have sufficient strength to
withstand the forces applied directly to them either during installation or during application, mainly caused by
pedestrian traffic.
NOTE The test methods given in the main body of this International Standard and in Annex A are reported and
interpreted in different ways. The similarities that exist between the methods are not sufficient to permit reasonable
comparisons to be made.
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 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 terms and definitions apply.
3.1
point load
compressive force applied to a test specimen by a circular indenter with a circular cross section of 50 cm ,
equivalent to a diameter of 79,8 mm
3.2
critical point
point on the force-deformation curve where a straight line, forming a tangent to the curve, separates from the
curve [see Figure 4 a)]
4 Principle
A point load is applied with an indenter at a given speed in an axial direction perpendicular to the major faces
of a squarely cut square test specimen and the compressive force at the critical point and/or the force for a
given deformation is calculated.
5 Apparatus
5.1 Compression-testing machine, appropriate to the range of force and displacement involved and
having one rigid, polished, fixed or vertically movable square or circular plane plate, the length of one side
(or the diameter) of which is at least as large as the length (or the diagonal length) of the test specimen
(see Figure 1).
Key
1 connection to the testing machine
2 indenter
3 test specimen
4 supporting plate
Figure 1 — Test set-up
5.2 Cylindrical indenter, steel, with a diameter of (79,8 ± 0,1) mm, connected to a vertically movable or
fixed support.
If appropriate, the indenter shall be connected to the compression machine through a centrally positioned ball
joint to ensure that only an axial force is applied to the relevant area of the test specimen. The indenter or the
supporting plate shall be capable of moving at a constant speed in accordance with 7.2 (see Figures 2 and 3).
2 © ISO 2008 – All rights reserved
Dimensions in millimetres
Key
1 cylindrical indenter
2 test specimen
Figure 2 — Test specimen
Dimensions in millimetres
Figure 3 — Cylindrical indenter
5.3 Displacement-measuring device, capable of a continuous measurement of the displacement of the
indenter or the movable plate, permitting a reading to ± 5 % or ± 0,1 mm, whichever is the smaller (see 5.1.1).
5.4 Force-measuring sensor, fitted to the machine plate or the indenter, to measure the force produced by
the reaction of the test specimen upon the plate and the indenter.
This sensor shall be such that either its own deformation during the course of the measuring operation is
negligible compared with that being measured or its deformation shall be taken into account by calculation. In
addition, it shall allow the continuous measurement of the force, permitting a reading to ± 1 %.
5.5 Recording device, for the simultaneous recording of the force, F, and the displacement, X, which
provides a curve of F as a function of X (see 7.2).
6 Test specimens
6.1 Dimensions of test specimens
Test specimens shall maintain the original product thickness. Any skins, facings, and/or coatings shall be
retained. The test specimens shall be squarely cut and square with sides having dimensions of
300 mm × 300 mm. Other dimensions may be specified in the relevant product standard or any other
international or European technical specification or may be agreed between parties.
The linear dimensions shall be determined in accordance with ISO 29768, to the nearest millimetre.
The tolerance on parallelism and flatness between the two major faces of the test specimens shall not be
greater than 0,5 % of the test specimen side with a maximum of 0,5 mm.
6.2 Number of test specimens
The number of test specimens shall be as specified in the relevant product standard. If the number is not
specified, then at least three test specimens shall be used. In the absence of a product standard or any other
international or European technical specification, the number of test specimens may be agreed between
parties.
6.3 Preparation of test specimens
Test specimens shall be cut so that the specimen base is normal to the direction of compression of the
product in its application. The test specimens shall be cut and prepared by methods that do not change the
original structure of the product. Moulded skins that do not remain with the product in use shall be removed.
Rec
...
INTERNATIONAL ISO
STANDARD 29769
First edition
2008-11-01
Thermal insulating products for building
applications — Determination of
behaviour under point load
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination du comportement sous charge ponctuelle
Reference number
©
ISO 2008
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2008
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 either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2008 – All rights reserved
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle. 2
5 Apparatus . 2
6 Test specimens . 4
7 Procedure . 5
8 Calculation and expression of results. 6
9 Accuracy of measurement. 6
10 Test report . 7
Annex A (normative) Modifications to the general test method for cellular glass products . 8
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 29769 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 1, Test and measurement methods.
iv © ISO 2008 – All rights reserved
Introduction
This International Standard comprises the original EN 12430:1998 and its Amendment 1:2006 prepared by
Technical Committee CEN/TC 88, Thermal insulating materials and products, which has been amended by
ISO/TC 163/SC 1 with reference to conditioning and testing conditions in tropical countries.
This International Standard is one of a series of documents specifying test methods, based on existing
European Standards, that are being adopted by ISO. This “package” of standards includes the following group
of interrelated documents.
International Standard Respective
EN standard
ISO 29465, Thermal insulating products for building applications — Determination of length EN 822
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 flatness EN 825
ISO 29469, Thermal insulating products for building applications — Determination of EN 826
compression behaviour
ISO 29470, Thermal insulating products for building applications — Determination of the EN 1602
apparent density
ISO 29471, Thermal insulating products for building applications — Determination of EN 1603
dimensional 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 tensile EN 1607
strength perpendicular to faces
ISO 29766, Thermal insulating products for building applications — Determination of tensile EN 1608
strength parallel to faces
ISO 29767, Thermal insulating products for building applications — Determination of short- EN 1609
term water absorption by partial immersion
ISO 29768, Thermal insulating products for building applications — Determination of linear EN 12085
dimensions of test specimens
ISO 29769, Thermal insulating products for building applications — Determination of EN 12430
behaviour under point load
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 organic EN 13820
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 the EN 13494
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 the EN 13496
mechanical properties of glass fibre meshes
vi © ISO 2008 – All rights reserved
INTERNATIONAL STANDARD ISO 29769:2008(E)
Thermal insulating products for building applications —
Determination of behaviour under point load
1 Scope
This International Standard specifies equipment and procedures for determining the behaviour of products
under a force applied to a small area of a test specimen at a given speed. This International Standard is
applicable to thermal insulating products.
This International Standard can be used to determine whether the products have sufficient strength to
withstand the forces applied directly to them either during installation or during application, mainly caused by
pedestrian traffic.
NOTE The test methods given in the main body of this International Standard and in Annex A are reported and
interpreted in different ways. The similarities that exist between the methods are not sufficient to permit reasonable
comparisons to be made.
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 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 terms and definitions apply.
3.1
point load
compressive force applied to a test specimen by a circular indenter with a circular cross section of 50 cm ,
equivalent to a diameter of 79,8 mm
3.2
critical point
point on the force-deformation curve where a straight line, forming a tangent to the curve, separates from the
curve [see Figure 4 a)]
4 Principle
A point load is applied with an indenter at a given speed in an axial direction perpendicular to the major faces
of a squarely cut square test specimen and the compressive force at the critical point and/or the force for a
given deformation is calculated.
5 Apparatus
5.1 Compression-testing machine, appropriate to the range of force and displacement involved and
having one rigid, polished, fixed or vertically movable square or circular plane plate, the length of one side
(or the diameter) of which is at least as large as the length (or the diagonal length) of the test specimen
(see Figure 1).
Key
1 connection to the testing machine
2 indenter
3 test specimen
4 supporting plate
Figure 1 — Test set-up
5.2 Cylindrical indenter, steel, with a diameter of (79,8 ± 0,1) mm, connected to a vertically movable or
fixed support.
If appropriate, the indenter shall be connected to the compression machine through a centrally positioned ball
joint to ensure that only an axial force is applied to the relevant area of the test specimen. The indenter or the
supporting plate shall be capable of moving at a constant speed in accordance with 7.2 (see Figures 2 and 3).
2 © ISO 2008 – All rights reserved
Dimensions in millimetres
Key
1 cylindrical indenter
2 test specimen
Figure 2 — Test specimen
Dimensions in millimetres
Figure 3 — Cylindrical indenter
5.3 Displacement-measuring device, capable of a continuous measurement of the displacement of the
indenter or the movable plate, permitting a reading to ± 5 % or ± 0,1 mm, whichever is the smaller (see 5.1.1).
5.4 Force-measuring sensor, fitted to the machine plate or the indenter, to measure the force produced by
the reaction of the test specimen upon the plate and the indenter.
This sensor shall be such that either its own deformation during the course of the measuring operation is
negligible compared with that being measured or its deformation shall be taken into account by calculation. In
addition, it shall allow the continuous measurement of the force, permitting a reading to ± 1 %.
5.5 Recording device, for the simultaneous recording of the force, F, and the displacement, X, which
provides a curve of F as a function of X (see 7.2).
6 Test specimens
6.1 Dimensions of test specimens
Test specimens shall maintain the original product thickness. Any skins, facings, and/or coatings shall be
retained. The test specimens shall be squarely cut and square with sides having dimensions of
300 mm × 300 mm. Other dimensions may be specified in the relevant product standard or any other
international or European technical specification or may be agreed between parties.
The linear dimensions shall be determined in accordance with ISO 29768, to the nearest millimetre.
The tolerance on parallelism and flatness between the two major faces of the test specimens shall not be
greater than 0,5 % of the test specimen side with a maximum of 0,5 mm.
6.2 Number of test specimens
The number of test specimens shall be as specified in the relevant product standard. If the number is not
specified, then at least three test specimens shall be used. In the absence of a product standard or any other
international or European technical specification, the number of test specimens may be agreed between
parties.
6.3 Preparation of test specimens
Test specimens shall be cut so that the specimen base is normal to the direction of compression of the
product in its application. The test specimens shall be cut and prepared by methods that do not change the
original structure of the product. Moulded skins that do not remain with the product in use shall be removed.
Rec
...
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