1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12089:2013Thermal insulating productsfor building applications Determination of bendingbehaviourBS EN 12089:2013 BRITISH STANDARDNational forewordThis British Standard is t
2、he UK implementation of EN 12089:2013. Itsupersedes BS EN 12089:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A list of organizations represented on this committee can beobtained on r
3、equest to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 78054 7ICS 91.100.60 Compliance with a Britis
4、h Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2013. Amendments issued since publicationDate Text affectedBS EN 12089:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1
5、2089 March 2013 ICS 91.100.60 Supersedes EN 12089:1997English Version Thermal insulating products for building applications - Determination of bending behaviour Produits isolants thermiques destins aux applications du btiment - Dtermination du comportement en flexion Wrmedmmstoffe fr das Bauwesen -
6、Bestimmung des Verhaltens bei Biegebeanspruchung 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 al
7、teration. 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 m
8、ade 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, Est
9、onia, 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 STA
10、NDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 12089:2013: EBS EN 12089:2013EN 12089:2013 (E) 2 C
11、ontents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions 5 4 Principle 6 5 Apparatus . 6 6 Test specimens 7 7 Procedure . 8 8 Calculation and expression of results 9 9 Accuracy of measurement . 10 10 Test report 10 BS EN 12089:2013EN 12089:2013 (E) 3 Foreword This docum
12、ent (EN 12089:2013) has been prepared by Technical Committee CEN/TC 88 “Thermal insulation 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 l
13、atest 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 o
14、r all such patent rights. This document supersedes EN 12089:1997. 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 an
15、d 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
16、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 gro
17、up of inter-related 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 length and width EN 823, Thermal insul
18、ating 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 appli
19、cations 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/
20、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 lo
21、ad and temperature conditions EN 1606, Thermal insulating products for building applications Determination of compressive creep BS EN 12089:2013EN 12089:2013 (E) 4 EN 1607, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608, Thermal
22、 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 Determin
23、ation 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, Therma
24、l 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
25、 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
26、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
27、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, Croa
28、tia, 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 t
29、he United Kingdom. BS EN 12089:2013EN 12089:2013 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining the bending behaviour of full size products (Method A) and test specimens (Method B) under the action of three-point loading. It is applicable to thermal insul
30、ating products. The test is designed to determine the bending strength of products and their deflection at a given load. The method can be used to determine the resistance of the product to bending stresses during transport and application. 2 Normative references The following documents, in whole or
31、 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 822, Thermal insulating products for bui
32、lding applications Determination of length and width EN 823, Thermal insulating products for building applications Determination of thickness EN 12085, Thermal insulating products for building applications Determination of linear dimensions of test specimens ISO 5725-1, Accuracy (trueness and precis
33、ion) of measurement methods and results Part 1: General principles and definitions 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
34、 For the purposes of this document, the following terms and definitions apply. 3.1 bending strength bmaximum stress calculated from the maximum force Fmrecorded during the bending procedure 3.2 bending stress xstress calculated from the force Fxat the deflection X 3.3 deflection X vertical displacem
35、ent of the test specimen at mid span, at the force Fx, measured at the loading edge BS EN 12089:2013EN 12089:2013 (E) 6 4 Principle The test method consists of applying, at a given speed, a force by means of a loading edge in an axial direction to the faces of a squarely cut rectangular test specime
36、n, which is placed on two support edges. The force is applied to the test specimen at a position midway between the supporting positions (see Figure 1). a) Bending strength b) Deflection Figure 1 Principle of test method 5 Apparatus 5.1 Test machine A test machine suited to the range of force and di
37、splacement involved, and with a loading edge and adjustable support edges. It shall be capable of operating at a constant rate of movement of the movable head. 5.1.1 Support edges Test specimen supports shall consist of two adjustable cylindrical support edges placed parallel to each other and in th
38、e same horizontal plane. The diameter of the supports shall be (80 3) mm or (30 3) mm (see Figure 2). The length of the support edges shall be at least equal to the width of the test specimens. The span L (see Figure 2) between the support edges shall be adjustable in the range 300 mm to 1 200 mm (m
39、ethod A) or 200 mm to 500 mm (method B). 5.1.2 Loading edge The test specimen loading edge shall have the same shape and dimensions as the support edges. The loading edge shall be located centrally between and parallel to the supporting edges. 5.1.3 Load distribution plates For products which may be
40、 subject to crushing by the loading and support edges, steel load distribution plates with a thickness of at least 1 mm shall be used. The width of the distribution plates shall be (30 1) mm and their length shall be at least equal to the width of the test specimen. BS EN 12089:2013EN 12089:2013 (E)
41、 7 5.2 Measuring devices for displacement and force 5.2.1 Measurement of displacement The test machine shall be fitted with a system that allows continuous measurement of the displacement of the movable loading edge with an accuracy of 5 % or 0,1 mm, whichever is the smaller. The measured displaceme
42、nt corresponds to the deflection, X, of the test specimen. 5.2.2 Measurement of force A force sensor shall be fixed to the loading edge in order to measure the force F produced by the reaction of the test specimen upon the edges during the test. This sensor shall be such that its own deformation dur
43、ing the course of the measuring operation is negligible compared with that being measured or may be taken into account by calculation. In addition, it shall allow the continuous measurement of the force at all times permitting reading to 1 %. A device shall be used for the simultaneous recording of
44、the force, F, and the deflection, X, to provide the force-deflection curve, required in Clause 7. 1 loading edge 2 test specimen with the thickness d 3 support edges a 50 mm for method A, 25 mm for method B Figure 2 Principles of apparatus for testing of bending behaviour 6 Test specimens 6.1 Dimens
45、ions of test specimens 6.1.1 Method A The test specimen is a full size product. It shall be a squarely cut rectangle having the following dimensions: Thickness: Original product thickness; Length: Length of the full size product, with a maximum of 1 300 mm; Width: Width of the full size product. If
46、this is impossible because of limitations caused by the testing machine, the width shall be at least 300 mm. BS EN 12089:2013EN 12089:2013 (E) 8 6.1.2 Method B The test specimen shall be a squarely cut rectangle having the following dimensions: Thickness: Original product thickness of the product wi
47、th a maximum of 100 mm; Length: 5 times the nominal thickness plus 50 mm (but not greater than 550 mm; Width: 150 mm. Other dimensions of the test specimen may be given in the relevant product standard or any other European Technical Specification or agreed between parties. 6.2 Number of test specim
48、ens The number of test specimens shall be as specified in the relevant product standard or any other European Technical Specification. In the absence of such a specification at least three test specimens shall be used. In the absence of a product standard or any other European Technical Specificatio
49、n the number of test specimens may be agreed between parties. If the direction of the bending force on the product in its application is not known, and/or the product has different surface skins, facings and/or coatings on its two main faces, then additional sets of test specimens shall be used. 6.3 Preparation of test specimens Cutting of the test specimens shall be by methods that do not change the original structure of the product. Any skins, f
