1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12090:2013Thermal insulating productsfor building applications Determination of shearbehaviourBS EN 12090:2013 BRITISH STANDARDNational forewordThis British Standard is the
2、 UK implementation of EN 12090:2013. Itsupersedes BS EN 12090:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A list of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 req
3、uest 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 2013 ISBN 978 0 580 78050 9 ICS 91.100.60 Compliance with a Britis
4、h Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013. Amendments issued since publicationDate Text affectedBS EN 12090:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12
5、090 March 2013 ICS 91.100.60 Supersedes EN 12090:1997English Version Thermal insulating products for building applications - Determination of shear behaviour Produits isolants thermiques destins aux applications du btiment - Dtermination du comportement en cisaillementWrmedmmstoffe fr das Bauwesen -
6、 Bestimmung des Verhaltens bei Scherbeanspruchung 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 a
7、lteration. 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
8、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, Es
9、tonia, 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 ST
10、ANDARDIZATION 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 12090:2013: EBS EN 12090:2013EN 12090:2013 (E) 2
11、Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions 5 4 Principle 5 5 Apparatus . 5 6 Test specimens 9 6.1 Dimensions of test specimens 9 6.1.1 General . 9 6.1.2 Single test specimen 9 6.1.3 Double test specimen 10 6.2 Number of test specimens . 10 6.3 Preparation
12、 of test specimens . 10 6.4 Conditioning of test specimens. 10 7 Procedure . 10 7.1 Test conditions . 10 7.2 Test procedure . 10 8 Calculation and expression of results 11 8.1 General . 11 8.2 Shear strength 11 8.3 Shear modulus . 11 9 Accuracy of measurement . 12 10 Test report 12 BS EN 12090:2013E
13、N 12090:2013 (E) 3 Foreword This document (EN 12090:2013) 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 iden
14、tical 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
15、held responsible for identifying any or all such patent rights. This document supersedes EN 12090:1997. 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
16、 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 administr
17、ative 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 tes
18、t standard is one of the following group of inter-related 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
19、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
20、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 consta
21、nt 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 defo
22、rmation under specified compressive load and temperature conditions EN 1606, Thermal insulating products for building applications Determination of compressive creep BS EN 12090:2013EN 12090:2013 (E) 4 EN 1607, Thermal insulating products for building applications Determination of tensile strength p
23、erpendicular 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 produ
24、cts 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 ab
25、sorption 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 applica
26、tions 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 1
27、2430, 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 De
28、termination 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 Stan
29、dard: 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, Sp
30、ain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12090:2013EN 12090:2013 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining shear behaviour. It is applicable to thermal insulating products. NOTE The tests described in this standard do not determ
31、ine pure shear behaviour, but measure the effects of applying two opposite parallel forces to the major faces of the test specimen. The test is however called shear in this text by convention. The application of a force tangentially to the major surface of the test specimen is considered to represen
32、t more closely the stresses imposed upon thermal insulation products in many building applications, particularly walls, than other methods of measuring shear performance e.g. bending tests. 2 Normative references The following documents, in whole or in part, are normatively referenced in this docume
33、nt 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 12085, Thermal insulating products for building applications Determination of linear dimens
34、ions of test specimens 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 shear strength ratio of the maximum force applied to the product, which will cause rupture along a plane parallel to the direction of the applied force, to the area of the
35、 plane on which the force acts 3.2 shear modulus, G shear stress divided by the corresponding relative deformation below the proportional limit, when the relationship is linear Note 1 to entry: See Figure 3. 4 Principle A test specimen is subjected to a shear stress transmitted to the test specimen
36、through rigid supports to which it is bonded. The corresponding force-displacement curve is determined. NOTE Tests carried out using the single test specimen method have produced results for shear strength, which indicate the result to be dependent upon test specimen thickness, with more scattered r
37、esults at greater thicknesses. Tests using the double test specimen method have also shown test specimen thickness to influence results for shear strength. 5 Apparatus 5.1 Test machine 5.1.1 General A test machine capable of applying a sufficient force within the maximum displacement experienced in
38、the shear test. It shall be capable of operating at a constant rate of movement of the movable head of (3 0,5) mm/min in a direction parallel to the longitudinal axis of the test specimen assembly. BS EN 12090:2013EN 12090:2013 (E) 6 The test machine shall exert a force F on the test specimen with a
39、 maximum error of 1 %, and produce a displacement , of the movable support relative to the fixed supports, having a maximum error of 1 %. If the shear modulus is required, the force F and the displacement shall be simultaneously recorded to provide the curve of F, required in Clause 7. It may be nec
40、essary to use a displacement transducer for accurate measurement of deformation particularly where a thick adhesive layer has been used in preparing the test specimen. The null or zero displacement of the test specimen may be calculated by subtraction from , the displacement due to the equipment and
41、 the same thickness of adhesive measured without the test specimen, e.g. replace the test specimen by metal block(s) in a blank test. 5.1.2 Single test specimen arrangement The test machine shall exert longitudinal shear forces through parallel plates bonded to a single test specimen of dimensions a
42、s in 6.1.2. The parallel plates shall be rigid with one plate attached to the fixed and the other to the movable parts of the test machine. 5.1.3 Double test specimen arrangement The test machine shall exert longitudinal shear forces through parallel plates bonded to a double test specimen of dimens
43、ions as in 6.1.3. The parallel plates shall be rigid with the outer plates attached to the fixed and the central plate to the movable parts of the test machine. 5.2 Specimen supports 5.2.1 Single test specimen assembly Two flat rigid specimen supports of length 330 mm and width 50 mm which shall be
44、attached to the grips of the test machine via an adaptor and universal joint. The method of attaching the specimen supports to the grips is shown in Figure 1. The thickness of the adaptors that connect the specimen supports to the test machine grips shall be the same as the thickness of the test spe
45、cimen. Flat rectangular sectioned mild steel plates with a thickness of 16 mm have proved suitable for the support material. 5.2.2 Double test specimen assembly The essential features are three flat rigid supports of which two can be maintained with their planes parallel and vertical. Two suitable a
46、rrangements are shown in Figure 2. Experience gained using both the single and double test specimen methods with several products indicated that it is of paramount importance that the specimen supports are very rigid. With the double test specimen arrangement, the fixed supports should be maintained
47、 in parallel vertical planes. Both the arrangements shown in Figure 2 have proved suitable. 5.3 Adhesive The adhesive used to fix the test specimen shall be such that the shear strength and modulus of the adhesive film is greater than that of the product under test. This ensures that rupture occurs
48、in the test specimen rather than failure in the adhesive. Information on suitable adhesives and their use may be provided in the relevant product standard or any other European Technical Specification. BS EN 12090:2013EN 12090:2013 (E) 7 Dimensions in millimetres Key 1 fixed machine grip 2 universal
49、 joint connection pins 3 tongue and groove 4 nut and bolt supports 5 adaptor 6 test specimen supports (length 330 mm, width 50 mm, thickness 16 mm) 7 test specimen (length 250 mm, width 50 mm) 8 load distribution plates 9 movable machine grip Figure 1 Example of single specimen test assembly BS EN 12090:2013EN 12090:2013 (E) 8 Figure 2 a) Key 1 loading plate (length 300 mm, width 100 mm, thickness 16 mm) 2 test specimen (length 200 mm, width 100 mm) 3 adhesive
