Thermal insulating products for building applications - Determination of compressive creep

This European Standard specifies the equipment and procedures for determining the compressive creep of specimens under various conditions of stress. It is applicable to thermal insulating products.

Wärmestoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei Druckbeanspruchung

Diese Europäische Norm legt Prüfeinrichtungen und Verfahren zur Bestimmung des Kriechverhaltens von Probekörpern bei Druckbeanspruchung mit verschiedenen Laststufen fest. Sie gilt für Wärmedämmstoffe.

Produits isolants thermiques destinés aux applications du bâtiment - Détermination du fluage en compression

La présente Norme européenne spécifie l'équipement et les modes opératoires permettant de déterminer le fluage en compression d'éprouvettes soumises à différentes conditions de contrainte. Elle s’applique aux produits isolants thermiques.

Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje lezenja pod tlačno obremenitvijo

Ta evropski standard določa opremo in postopke za določanje kompresijskega lezenja vzorcev pri različnih napetostih. Uporablja se za toplotnoizolacijske proizvode.

General Information

Status
Published
Publication Date
12-Mar-2013
Current Stage
9060 - Closure of 2 Year Review Enquiry - Review Enquiry
Due Date
02-Sep-2018
Completion Date
02-Sep-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wärmestoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei DruckbeanspruchungProduits isolants thermiques destinés aux applications du bâtiment - Détermination du fluage en compressionThermal insulating products for building applications - Determination of compressive creep91.100.60Thermal and sound insulating materialsICS:Ta slovenski standard je istoveten z:EN 1606:2013SIST EN 1606:2013en,fr,de01-julij-2013SIST EN 1606:2013SLOVENSKI

STANDARDSIST EN 1606:1997/AC:1999SIST EN 1606:1997/A1:2007SIST EN 1606:19971DGRPHãþD

SIST EN 1606:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1606
March 2013 ICS 91.100.60 Supersedes EN 1606:1996English Version

Thermal insulating products for building applications - Determination of compressive creep

Produits isolants thermiques destinés aux applications du bâtiment - Détermination du fluage en compression

Wärmestoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei Druckbeanspruchung This European Standard was approved by CEN on 15 December 2012.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1606:2013: ESIST EN 1606:2013

EN 1606:2013 (E) 2 Contents Page Foreword ....................................................................................................................................................... 3 1 Scope ................................................................................................................................................ 5 2 Normative references ....................................................................................................................... 5 3 Terms and definitions ...................................................................................................................... 5 4 Principle............................................................................................................................................ 6 5 Apparatus ......................................................................................................................................... 7 6 Test specimens ................................................................................................................................ 8 6.1 Selection of test specimens ............................................................................................................ 8 6.2 Dimensions of test specimens ........................................................................................................ 8 6.3 Number of test specimens ............................................................................................................... 8 6.4 Preparation of test specimens ......................................................................................................... 8 6.5 Conditioning of test specimens....................................................................................................... 9 7 Procedure ......................................................................................................................................... 9 7.1 Test conditions ................................................................................................................................. 9 7.2 Stress selection ................................................................................................................................ 9 7.3 Test procedure ................................................................................................................................. 9 7.4 Duration of test ............................................................................................................................... 11 8 Calculation and expression of results .......................................................................................... 11 9 Precision of the method ................................................................................................................. 12 10 Test report ...................................................................................................................................... 12 Annex A (normative)

Calculation method .................................................................................................. 14 A.1 General ........................................................................................................................................... 14 A.2 Principle.......................................................................................................................................... 14 A.3 Procedure ....................................................................................................................................... 15 A.4 Calculation of long-term deformation ........................................................................................... 16 Annex B (informative)

Example of a linear regression analysis ............................................................. 17

SIST EN 1606:2013

EN 1606:2013 (E) 3 Foreword This document (EN 1606:2013) has been prepared by 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 September 2013 and conflicting national standards shall be withdrawn at the latest by September 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1606:1996.

The revision of this standard contains no major changes, only minor corrections and clarifications of an editorial nature. This European Standard is one of a series of standards which specify test methods for determining dimensions and properties of thermal insulating materials and products. It supports a series of product standards for thermal insulating materials and products which derive from the Council Directive of 21 December 1988 on the approximation of laws, regulations and administrative provisions of the Member States relating to construction products (Directive 89/106/EEC) through the consideration of the essential requirements. This European Standard has been drafted for applications in buildings, but it may also be used in other areas where it is relevant. This European test standard is one of the following group of interrelated standards on test methods for determining dimensions and properties of thermal insulation materials and products, all of which fall within the scope of CEN/TC 88:  EN 822, Thermal insulating products for building applications — Determination of length and width  EN 823, Thermal insulating products for building applications — Determination of thickness  EN 824, Thermal insulating products for building applications — Determination of squareness  EN 825, Thermal insulating products for building applications — Determination of flatness  EN 826, Thermal insulating products for building applications — Determination of compression behaviour  EN 1602, Thermal insulating products for building applications — Determination of the apparent density  EN 1603, Thermal insulating products for building applications — Determination of dimensional stability under constant normal laboratory conditions (23 °C/50 % relative humidity)  EN 1604, Thermal insulating products for building applications — Determination of dimensional stability under specified temperature and humidity conditions  EN 1605, Thermal insulating products for building applications — Determination of deformation under specified compressive load and temperature conditions  EN 1606, Thermal insulating products for building applications — Determination of compressive creep SIST EN 1606:2013

EN 1606:2013 (E) 4  EN 1607, Thermal insulating products for building applications — Determination of tensile strength perpendicular to faces  EN 1608, Thermal insulating products for building applications — Determination of tensile strength parallel to faces  EN 1609, Thermal insulating products for building applications — Determination of short-term water absorption by partial immersion  EN 12085, Thermal insulating products for building applications — Determination of linear dimensions of test specimens  EN 12086, Thermal insulating products for building applications — Determination of water vapour transmission properties  EN 12087, Thermal insulating products for building applications — Determination of long-term water absorption by immersion  EN 12088, Thermal insulating products for building applications — Determination of long-term water absorption by diffusion  EN 12089, Thermal insulating products for building applications — Determination of bending behaviour  EN 12090, Thermal insulating products for building applications — Determination of shear behaviour  EN 12091, Thermal insulating products for building applications — Determination of freeze-thaw resistance  EN 12429, Thermal insulating products for building applications — Conditioning to moisture equilibrium under specified temperature and humidity conditions  EN 12430, Thermal insulating products for building applications — Determination of behaviour under point load  EN 12431, Thermal insulating products for building applications — Determination of thickness for floating floor insulating products  EN 13793, Thermal insulating products for building applications — Determination of behaviour under cyclic loading  EN 13820, Thermal insulating materials for building applications — Determination of organic content According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

SIST EN 1606:2013

EN 1606:2013 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining the compressive creep of specimens under various conditions of stress. It is applicable to thermal insulating products. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 826, Thermal insulating products for building applications — Determination of compression behaviour EN 12085, 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 thickness linear dimension measured perpendicular to the length and width plane, where d

is the original product thickness; dS is the thickness of the specimen; dL

is the thickness of the specimen under the basic compressive stress of the loading device ('dead weight'); d0 is the thickness of the specimen 60 s after the beginning of the loading process; dt is the thickness of the specimen at a given time, t

3.2 compressive stress σc ratio of the compressive force to the initial surface area of the cross section of the specimen 3.3 deformation X reduction in thickness of the specimen 3.4 relative deformation ε ratio of the deformation of the specimen, X, and its thickness dS, measured in the direction of loading SIST EN 1606:2013

EN 1606:2013 (E) 6 3.5 compressive creep Xct increase in deformation of the specimen under a constant stress with time under specified conditions of temperature and humidity Xct = Xt − X0 where Xt is the deformation at time t; X0 is the initial deformation (after 60 s from the beginning of loading) Note 1 to entry: An illustration of the different thicknesses and deformations is given in Figure 1.

Key dL reference value for deformation measurements t time 1 'dead weight' of the loading device (< 10 % of the smallest stress chosen for the creep test) 2 load applied in the compressive creep test 3 deformation curve In this figure, dL is used as a reference value for deformation measurements. If dS is used as the reference value, the figure can be used, omitting the column for dL (see 7.3). Figure 1 — Illustration of the different thicknesses and deformations 4 Principle The compressive creep is determined by measuring the increase in deformation of a specimen under constant compressive stress and specified conditions of temperature, humidity and time. SIST EN 1606:2013

EN 1606:2013 (E) 7 5 Apparatus 5.1 Loading device, consisting of two flat platens, one of which shall be movable, so arranged that they compress the specimen in a vertical direction.

The movable platen shall be guided in such a manner as to be self-aligning. The platens 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 platens, i.e. the deformation of the specimen, to an accuracy of 0,01 mm. 5.3 Suitable damping measures, to minimise the effects of external vibration (e.g. substantial foundation of the apparatus support). Examples of the testing apparatus are given in Figure 2.

a) b) Key 1 displacement transducer or dial gauge 2 loading bridge 3 load distribution plate (movable, self-aligning) 4 test specimen 5 support beam 6 loading by weights Figure 2 — Examples of test apparatus SIST EN 1606:2013

EN 1606:2013 (E) 8 6 Test specimens 6.1 Selection of test specimens The specimens for determining the compressive creep shall be taken from the same sample, with the same preparation as the specimens used for the compression test as specified in EN 826. The method of selecting the specimens shall be as specified in the relevant product standard. In the absence of a product standard or any other European Technical Specification, the method of selection of the test specimens may be agreed between parties. 6.2 Dimensions of test specimens The thickness of specimens shall be equal to the original product thickness. The width of the specimens shall not be less than its thickness. Products with facings or integrally moulded skins which are retained in use shall be tested with these faces or skins intact. Test specimens shall not be layered to produce a greater thickness for testing. The specimens shall be squarely cut and have sides with the following recommended dimensions: 50 mm × 50 mm or 100 mm × 100 mm or 150 mm × 150 mm or 200 mm × 200 mm or 300 mm × 300 mm. The dimensions of specimens shall be the same as used in the compression test as described in EN 826. These are specified in the relevant product standard or agreed between parties. The linear dimensions shall be determined in accordance with EN 12085, to an accuracy of 0,5 %. The tolerance on parallelism and flatness between the upper and lower face of the specimen shall not be greater

...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wärmestoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei DruckbeanspruchungProduits isolants thermiques destinés aux applications du bâtiment - Détermination du fluage en compressionThermal insulating products for building applications - Determination of compressive creep91.100.60Thermal and sound insulating materialsICS:Ta slovenski standard je istoveten z:FprEN 1606kSIST FprEN 1606:2012en,fr,de01-september-2012kSIST FprEN 1606:2012SLOVENSKI

STANDARD
kSIST FprEN 1606:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 1606
June 2012 ICS 91.100.60 Will supersede EN 1606:1996English Version

Thermal insulating products for building applications - Determination of compressive creep

Produits isolants thermiques destinés aux applications du bâtiment - Détermination du fluage en compression

Wärmestoffe für das Bauwesen - Bestimmung des Langzeit-Kriechverhaltens bei Druckbeanspruchung This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 88.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 1606:2012: EkSIST FprEN 1606:2012

FprEN 1606:2012 (E) 2 Contents Page Foreword ..............................................................................................................................................................31 Scope ......................................................................................................................................................52 Normative references ............................................................................................................................53 Terms and definitions ...........................................................................................................................54 Principle ..................................................................................................................................................75 Apparatus ...............................................................................................................................................76 Test specimens ......................................................................................................................................86.1 Selection of test specimens .................................................................................................................86.2 Dimensions of test specimens .............................................................................................................96.3 Number of test specimens ....................................................................................................................96.4 Preparation of test specimens .............................................................................................................96.5 Conditioning of test specimens ...........................................................................................................97 Procedure ............................................................................................................................................ 107.1 Test conditions ................................................................................................................................... 107.2 Stress selection .................................................................................................................................. 107.3 Test procedure .................................................................................................................................... 107.4 Duration of test ................................................................................................................................... 128 Calculation and expression of results .............................................................................................. 129 Precision of the method ..................................................................................................................... 1310 Test report ........................................................................................................................................... 13Annex A (normative)

Calculation method...................................................................................................... 15A.1 General ................................................................................................................................................. 15A.2 Principle ............................................................................................................................................... 15A.3 Procedure ............................................................................................................................................ 16A.4 Calculation of long-term deformation .............................................................................................. 17Annex B (informative)

Example of a linear regression analysis ............................................................... 18 kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 3 Foreword This document (FprEN 1606:2012) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”, the secretariat of which is held by DIN. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 1606:1996.

The revision of this standard contains no major changes only minor corrections and clarifications of editorial nature. This European Standard is one of a series of standards which specify test methods for determining dimensions and properties of thermal insulating materials and products. It supports a series of product standards for thermal insulating materials and products which derive from the Council Directive of 21 December 1988 on the approximation of laws, regulations and administrative provisions of the Member States relating to construction products (Directive 89/106/EEC) through the consideration of the essential requirements. This European Standard has been drafted for applications in buildings, but it may also be used in other areas where it is relevant. This EN test standard is one of the following group of interrelated standards on test methods for determining dimensions and properties of thermal insulation materials and products, all of which come within the scope of CEN/TC 88: EN 822, Thermal insulating products for building applications — Determination of Iength and width EN 823, Thermal insulating products for building applications — Determination of thickness EN 824, Thermal insulating products for building applications — Determination of squareness EN 825, Thermal insulating products for building applications — Determination of flatness EN 826, Thermal insulating products for building applications — Determination of compression behaviour EN 1602, Thermal insulating products for building applications — Determination of the apparent density EN 1603, Thermal insulating products for building applications — Determination of dimensional stability under constant normal laboratory conditions (23 °C/50 % relative humidity) EN 1604, Thermal insulating products for building applications — Determination of dimensional stability under specified temperature and humidity conditions EN 1605, Thermal insulating products for building applications — Determination of deformation under specified compressive load and temperature conditions EN 1606, Thermal insulating products for building applications — Determination of compressive creep EN 1607, Thermal insulating products for building applications — Determination of tensile strength perpendicular to faces EN 1608, Thermal insulating products for building applications — Determination of tensile strength parallel to faces kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 4 EN 1609, Thermal insulating products for building applications — Determination of short-term water absorption by partial immersion EN 12085, Thermal insulating products for building applications — Determination of linear dimensions of test specimens EN 12086, Thermal insulating products for building applications — Determination of water vapour transmission properties EN 12087, Thermal insulating products for building applications — Determination of long-term water absorption by immersion EN 12088, Thermal insulating products for building applications — Determination of long-term water absorption by diffusion EN 12089, Thermal insulating products for building applications — Determination of bending behaviour EN 12090, Thermal insulating products for building applications —Determination of shear behaviour EN 12091, Thermal insulating products for building applications — Determination of freeze-thaw resistance EN 12429, Thermal insulating products for building applications — Conditioning to moisture equilibrium under specified temperature and humidity conditions EN 12430, Thermal insulating products for building applications — Determination of behaviour under point load EN 12431, Thermal insulating products for building applications — Determination of thickness for floating floor insulating products EN 13793, Thermal insulating products for building applications — Determination of behaviour under cyclic loading EN 13820, Thermal insulating products for building applications — Determination of organic content

kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining the compressive creep of specimens under various conditions of stress. It is applicable to thermal insulating products. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 826, Thermal insulating products for building applications — Determination of compression behaviour EN 12085, 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 thickness linear dimension measured perpendicular to the length and width plane 3.1.1 thickness d original product thickness 3.1.2 thickness dS thickness of the specimen 3.1.3 thickness dL thickness of the specimen under the basic compressive stress of the loading device ('dead weight') 3.1.4 thickness d0 thickness of the specimen 60 s after the beginning of the loading process 3.1.5 thickness dt thickness of the specimen at a given time, t kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 6 3.2 compressive stress σc ratio of the compressive force to the initial surface area of the cross section of the specimen 3.3 deformation X reduction in thickness of the specimen 3.4 relative deformation ε ratio of the deformation of the specimen, X, and its thickness dS, measured in the direction of loading 3.5 compressive creep Xct increase in deformation of the specimen under a constant stress with time under specified conditions of temperature and humidity Xct = Xt − X0 where Xt is the deformation at time t; X0 is the initial deformation (after 60 s from the beginning of loading) Note 1 to entry: An illustration of the different thicknesses and deformations is given in Figure 1. kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 7

Key a) thickness b) time, t c) deformation curve dL reference value for deformation measurements 1 'dead weight' of the loading device (< 10 % of the smallest stress chosen for the creep test) 2 load applied in the compressive creep test In this figure, dL is used as a reference value for deformation measurements. If dS is used as the reference value, the figure can be used, omitting the column for dL (see 7.3). Figure 1 — Illustration of the different thicknesses and deformations 4 Principle The compressive creep is determined by measuring the increase in deformation of a specimen under constant compressive stress and specified conditions of temperature, humidity and time. 5 Apparatus 5.1 Loading device, consisting of two flat platens, one of which shall be movable, so arranged that they compress the specimen in a vertical direction. The movable platen shall be guided in such a manner as to be self-aligning. The platens 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 platens, i.e. the deformation of the specimen, to an accuracy of 0,01 mm. 5.3 Suitable damping measures, to minimize the effects of external vibration (e.g. substantial foundation of the apparatus support). Examples of the testing apparatus are given in Figure 2. kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 8

a) b) Key 1 displacement transducer or dial gauge 2 loading bridge 3 load distribution plate (movable, self-aligning) 4 test specimen 5 support beam 6 loading by weights Figure 2 — Examples of test apparatus 6 Test specimens 6.1 Selection of test specimens The specimens for determining the compressive creep shall be taken from the same sample, with the same preparation as the specimens used for the compression test as specified in EN 826. The method of selecting the specimens shall be as specified in the relevant product standard. NOTE In the absence of a product standard or any other European technical specification, the method of selection of the test specimens may be agreed between parties. kSIST FprEN 1606:2012

FprEN 1606:2012 (E) 9 6.2 Dimensions of test specimens The thickness of specimens shall be equal to the original product thickness. The width of the specimens shall not be less than its thickness. Products with facings or integrally moulded skins which are retained in use shall be tested with these faces or skins intact. Test specimens shall not be layered to produce a greater thickness for testing. The specimens shall be squarely cut and have sides with the following recommended dimensions: 50 mm × 50 mm or 100 mm × 100 mm or 150 mm × 150 mm or 200 mm × 200 mm or 300 mm × 300 mm. The dimensions of specimens shall be the same as used in the compression test as described in EN 826. These are specified in the relevant product standard or agreed between parties. The linear dimensions shall be determined in accordance with EN 12085, to an accuracy of 0,5 %. The tolerance an parallelism and flatness between the upper and lower face of the specimen shall not be greater than 0,5 % of its side length, with a maximum of 0,5 mm. If the specimen is not flat, it shall be ground flat or an adequate coating shall be applied to prepare the surface for the test. Where it is coated, no significant creep should occur in the coating or

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