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1、BRITISH STANDARD BS EN 12430:1998 Incorporating amendment no. 1 Thermal insulating products for building applications Determination of behaviour under point load The European Standard EN 12430:1998, incorporating amendment A1:2006, has the status of a British Standard ICS 91.100.99 ? Licensed Copy:
2、London South Bank University, London South Bank University, Thu Jan 18 01:30:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 12430:1998 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of
3、 the Standards Committee and comes into effect on 15 December 1998 BSI 2006 ISBN 0 580 30164 8 National foreword This British Standard was published by BSI. It is the UK implementation of EN 12430:1998, incorporating amendment A1:2006. It is one of a large number of European test method standards wh
4、ich have been introduced for thermal insulating products. Guidance on the content and application of these new test methods is given in PD 6621. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number o
5、f the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its preparation was entrusted by Technical Committee B/540, Energy performance of materials, components and buildings, to Subcommittee B/540/1, European Standards for thermal insulation. A
6、list of organizations represented on this committee can be obtained on request to its secretary. This document does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot of itself confer immunit
7、y from legal obligations. Amendments issued since publication Amd. No. DateComments 1679929 December 2006 See national foreword Licensed Copy: London South Bank University, London South Bank University, Thu Jan 18 01:30:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI CEN European Committee for Standar
8、dization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12430:1998 E EUROPEAN STANDARDEN 12430 NORM
9、E EUROPE ENNE EUROPA ISCHE NORM June 1998 ICS 91.120.10 Descriptors: thermal insulation, buildings, thermal insulating materials, mechanical tests, compression tests, penetration tests, test equipment, specimen preparation, testing conditions, fidelity, strain measurements, test results English vers
10、ion Thermal insulating products for building applications Determination of behaviour under point load Produits isolants thermiques destine s aux applications du ba timent De termination du comportement sous charge ponctuelle Wa rmeda mmstoffe fu r das Bauwesen Bestimmung des Verhaltens unter Punktla
11、st This European Standard was approved by CEN on 5 June 1998. 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 refe
12、rences concerning such national standards may be obtained on application to the Central Secretariat 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 i
13、nto its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
14、 Spain, Sweden, Switzerland and United Kingdom. + A1 September 2006 Licensed Copy: London South Bank University, London South Bank University, Thu Jan 18 01:30:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Page 2 EN 12430:1998 BSI 2006 Foreword This European Standard has been prepared by Technical C
15、ommittee CEN/TC 88, Thermal insulating materials and products, the Secretariat of which is held by DIN. 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 pr
16、oduct 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
17、 the essential requirements. This European Standard contains one normative annex: Annex A Modifications to the general test method for cellular glass products This European Standard has been drafted for applications in buildings but it may also be used in other areas where it is relevant. This Europ
18、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1998, and conflicting national standards shall be withdrawn at the latest by December 1998. According to the CEN/CENELEC Internal Regulations, the na
19、tional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
20、 Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Principle3 5Apparatus3 6Test specimens4 7Procedure5 8Calculation and expression of results5 9Accuracy of measurement6 10Test report6 Annex A (normative) Modifications to the general test method for cellular glass products7 Forewo
21、rd to amendment A1 This document (EN 12430:1998/A1:2006) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”, the secretariat of which is held by DIN. This Amendment to the European Standard EN 12430:1998 shall be given the status of a national standard, ei
22、ther by publication of an identical text or by endorsement, at the latest by March 2007, and conflicting national standards shall be withdrawn at the latest by March 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to
23、implement this European Standard: Austria, Belgium, 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 and U
24、nited Kingdom. Licensed Copy: London South Bank University, London South Bank University, Thu Jan 18 01:30:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Page 3 EN 12430:1998 1Connection to the testing machine 2Indentor 3Test specimen 4Supporting plate Figure 1 Test set-up 1 Scope This European Stand
25、ard 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. It is applicable to thermal insulating products. The standard can be used to determine whether the products have sufficient strength to withstan
26、d forces applied directly to them, either during installation or during application, mainly caused by pedestrian traffic. NOTEThe test methods given in the main body of the standard and in annex A are reported and interpreted in different ways. The similarities that exist between the methods are not
27、 sufficient to permit reasonable comparisons to be made. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter
28、. For dated references, subsequent amendments to or revisions of these publications apply to this draft European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 12085, Thermal insulating products for
29、 building applications Determination of linear dimensions of test specimens. 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 point load compressive force applied to a test specimen by a circular indentor with a circular cross-section of 50 cm2 (diameter 79,8 mm)
30、 3.2 critical point point on the forcedeformation curve, where a straight line, forming a tangent to the curve, separates from the curve (see Figure 4a) 4 Principle A point load is applied with an indentor at a given speed in an axial direction perpendicular to the major faces of a squarely cut squa
31、re test specimen and the compressive force at the critical point and/or the force for a given deformation is calculated. 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 meas
32、urement method ! “ BSI 2006 Licensed Copy: London South Bank University, London South Bank University, Thu Jan 18 01:30:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Page 4 EN 12430:1998 5.1.2 Cylindrical indentor, of steel, having a diameter of (79,80,1) mm, connected to a vertically movable or fix
33、ed support. If appropriate, the indentor shall be connected to the compression machine through a centrally positioned ball joint to ensure that only axial force is applied to the relevant area of the test specimen. The indentor or the supporting plate shall be capable of moving at a constant speed i
34、n accordance with 7.2 (see Figures 2 and 3). 1Cylindrical indentor 2Test specimen Dimensions in millimetres Figure 2 Test specimen Dimensions in millimetres Figure 3 Cylindrical indentor 5.2 Measurement of displacement Device for the measurement of the displacement, fitted to the compression testing
35、 machine, which allows continuous measurement of the displacement of the indentor or the movable plate and which permits reading to5 % or0,1 mm, whichever is the smaller (see 5.1.1). 5.3 Measurement of force Sensor, fitted to the machine plate or the indentor to measure the force produced by the rea
36、ction of the test specimen upon the plate and the indentor. This sensor shall be such that its own deformation during the course of the measuring operation is negligible compared with that being measured, or if not, it shall be taken into account by calculation. In addition, it shall allow the conti
37、nuous measurement of the force, permitting reading to1 %. 5.4 Recording device 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 be at the origi
38、nal product thickness. Any skins, facings, and/or coatings shall be retained. The test specimens shall be squarely cut and square, with sides having dimensions of300mm 3300mm. NOTEOther dimensions may be specified in the relevant product standard or any other European technical specification, or may
39、 be agreed between parties. The linear dimensions shall be determined in accordance with EN 12085, 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 m
40、m. 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. NOTEIn the absence of a product standard or any other European technical specification, the number of
41、 test specimens may be agreed between parties. 5 Apparatus 5.1 Compression testing machine 5.1.1 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 of which the length of
42、 one side (or the diameter) is at least as large as the length (or the diagonal length) of the test specimen (see Figure 1). BSI 2006 Licensed Copy: London South Bank University, London South Bank University, Thu Jan 18 01:30:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Page 5 EN 12430:1998 a)b) Fp
43、compressive force at the critical point F0force corresponding to the preload eF p deformation at Fp Figure 4 Examples of forcedeformation curves Rectangular test specimens with parallel major faces shall be cut from the product so that the test specimen base is normal to the direction of the force w
44、hich is experienced in its application. 6.4 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (235) 8C. In case of dispute, they shall be stored at (23 2) 8C and (50 5) % relative humidity for the time specified in the relevant product standard. 7 Procedure 7.1 Te
45、st conditions The test shall be carried out at (23 5) 8C. In case of dispute, it shall be carried out at (23 2) 8C and (50 5) % relative humidity. 7.2 Test procedure Measure the linear dimensions to the nearest millimetre in accordance with EN 12085. Place the test specimen in the compression testin
46、g machine on the fixed plate so that the indentor is centrally located above the test specimen (see Figure 1). Preload with a force of (2,50,25) N corresponding to a pressure of (50050) Pa. Compress the area of the test specimen under the indentor, with the indentor set to move at a constant speed o
47、f (505) mm/min, and record the forcedeformation curve. The test shall be stopped when the critical point can be determined (see Figure 4a) and/or when the deformation reaches 20 % (see Figure 4b). 8 Calculation and expression of results 8.1 General The result is the mean value of the measurements wh
48、ich shall be expressed to two significant figures. NOTEResults should not be extrapolated to other thicknesses. The results for any given thickness shall be expressed as described in 8.2 to 8.4. 8.2 Compressive force / deformation at the critical point Fpis the compressive force at the critical poin
49、t for the test specimen, in kilonewtons. eFpis the deformation at the critical point, in millimetres. In the case of forcedeformation curves without a yield point, as shown in Figure 4b, the calculation of Fpis not relevant. 8.3 Point load at a given deformation If required, record the point load at a deformation of 5 mm, in kilonewtons. NOTEIf required, the point load may be recorded for other deformations too. 6.3 Preparation of test specimens Test speci