ISO 29764-2008 Thermal insulating products for building applications - Determination of deformation under specified compressive load and temperature conditions《.pdf

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1、 Reference number ISO 29764:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 29764 First edition 2008-11-01 Thermal insulating products for building applications Determination of deformation under specified compressive load and temperature conditions Produits isolants thermiques destins aux applications d

2、u btiment Dtermination de la dformation sous charge en compression et conditions de temprature spcifies ISO 29764:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typ

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5、ely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT 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

6、 or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs 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 copyrightiso.org We

7、b www.iso.org Published in Switzerland ii ISO 2008 All rights reservedISO 29764:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Principle1 5 Apparatus.1 6 Test specimens3 7 Procedure.4 8 Calculation and ex

8、pression of results 5 9 Accuracy of the method5 10 Test report6 ISO 29764:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards

9、 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 p

10、art 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

11、 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 t

12、hat 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 29764 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the built environment, Subcommittee SC 1, Te

13、st and measurement methods. ISO 29764:2008(E) ISO 2008 All rights reserved vIntroduction This International Standard comprises the original EN 1605:1996, EN 1605:1996/AC:1997 and its Amendment 1:2006 prepared by Technical Committee CEN/TC 88, Thermal insulating materials and products, which have bee

14、n 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

15、 following group of interrelated documents. International Standard Respective EN standard ISO 29465, Thermal insulating products for building applications Determination of length and width EN 822 ISO 29466, Thermal insulating products for building applications Determination of thickness EN 823 ISO 2

16、9467, Thermal insulating products for building applications Determination of squareness EN 824 ISO 29468, Thermal insulating products for building applications Determination of flatness EN 825 ISO 29469, Thermal insulating products for building applications Determination of compression behaviour EN

17、826 ISO 29470, Thermal insulating products for building applications Determination of the apparent density EN 1602 ISO 29471, Thermal insulating products for building applications Determination of dimensional stability under constant normal laboratory conditions (23 C/50 % relative humidity) EN 1603

18、 ISO 29472, Thermal insulating products for building applications Determination of dimensional stability under specified temperature and humidity conditions EN 1604 ISO 29764, Thermal insulating products for building applications Determination of deformation under specified compressive load and temp

19、erature conditions EN 1605 ISO 29765, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1607 ISO 29766, Thermal insulating products for building applications Determination of tensile strength parallel to faces EN 1608 ISO 29767, Thermal

20、 insulating products for building applications Determination of short- term water absorption by partial immersion EN 1609 ISO 29764:2008(E) vi ISO 2008 All rights reservedISO 29768, Thermal insulating products for building applications Determination of linear dimensions of test specimens EN 12085 IS

21、O 29769, Thermal insulating products for building applications Determination of behaviour under point load EN 12430 ISO 29770, Thermal insulating products for building applications Determination of thickness for floating-floor insulating products EN 12431 ISO 29771, Thermal insulating materials for

22、building applications Determination of organic content EN 13820 ISO 29803, Thermal insulation products for building applications Determination of the resistance to impact of external thermal insulation composite systems (ETICS) EN 13497 ISO 29804, Thermal insulation products for building application

23、s Determination of the tensile bond strength of the adhesive and of the base coat to the thermal insulation material EN 13494 ISO 29805, Thermal insulation products for building applications Determination of the mechanical properties of glass fibre meshes EN 13496 INTERNATIONAL STANDARD ISO 29764:20

24、08(E) ISO 2008 All rights reserved 1Thermal insulating products for building applications Determination of deformation under specified compressive load and temperature conditions 1 Scope This International Standard specifies the equipment and procedures for determining the deformation occurring unde

25、r specified conditions of compressive load, temperature and time. This International Standard is applicable to thermal insulating products. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited a

26、pplies. 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

27、 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 term and definition apply. 3.1 relative deformation reduction in thickness of a specimen under specif

28、ied compressive load, expressed as a percentage of its initial thickness, measured in the direction of compressive loading 4 Principle A specified compressive load is applied to a specimen and the relative deformation is measured in two steps, each with a different temperature and time condition. 5

29、Apparatus 5.1 Instruments, capable of measuring linear dimensions of specimens in accordance with ISO 29768 to an accuracy of 0,5 % for length and width and 0,1 mm for thickness. 5.2 Oven, with thermostat and forced air circulation, capable of maintaining the required temperature to within 1 K. ISO

30、29764:2008(E) 2 ISO 2008 All rights reserved5.3 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

31、 of being loaded smoothly and without distortion so that, during the test, the static stress does not change by more than 5 % (see Figure 1). The two flat plates should be finely ground/polished. The distance between the upper plate and the reading device should be as short as possible. The zero set

32、ting of the deformation measurement should be done using a calibrated steel block approximately of the same thickness as the product to be tested. a) b) Key 1 dial gauge 2 oven 3 loading bridge 4 load distribution platen (movable, self-aligning) 5 specimen 6 crosshead 7 loading by weights 8 load Fig

33、ure 1 Examples of test apparatus ISO 29764:2008(E) ISO 2008 All rights reserved 36 Test specimens 6.1 Dimensions of test specimens The thickness of the specimens shall be equal to the original product thickness, provided that the thickness is at least 20 mm. The specimens shall be squarely cut and h

34、ave 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 side length shall be equal to or greater than the thickness. Dimensions used shall be as specified in the relevant product standard. In the absence of a produ

35、ct standard or any other international or European technical specification, the dimensions of the specimens may be agreed between parties. The tolerance on the parallelism between the two faces of the specimen shall not be greater than 0,5 % of its side length, with a maximum of 0,5 mm. If the speci

36、men 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 deformation should occur in the coating or it shall be taken into account by deducting the deformation of the coating. 6.2 Number of test specimens

37、 The number of specimens shall be as specified in the relevant product standard. If the number is not specified, then at least three specimens shall be used for each selected set of conditions. In the absence of a product standard or any other international or European technical specification, the n

38、umber of specimens may be agreed between parties. 6.3 Preparation of test specimens The specimens shall be cut so that the direction of loading applied to the product corresponds to the direction in which the compressive forces are applied to the product in use. Natural surface skins and any facings

39、 and/or coatings that form an integral part of the product shall be retained. NOTE Special methods of preparation, when needed, are given in the relevant product standard or any other international or European technical specification. 6.4 Conditioning of test specimens The specimens shall be conditi

40、oned for at least 6 h at (23 5) C. In case of dispute, they shall be conditioned at (23 2) C and (50 5) % relative humidity for the time specified in the relevant product standard. In tropical countries, different conditioning and testing conditions can be relevant. In this case, the conditions shal

41、l be 27 C and 65 % RH and be stated clearly in the test report. ISO 29764:2008(E) 4 ISO 2008 All rights reserved7 Procedure 7.1 Test conditions The test conditions shall be as specified in Table 1. In tropical countries, different conditioning and testing conditions can be relevant. In this case, th

42、e conditions shall be 27 C and 65 % RH and be stated clearly in the test report. Table 1 Test conditions Step A Step B Set of conditions Stress Temperature Time Temperature Time kPa C h C h 1 20 (23 5) (48 1) (80 1) (48 1) 2 40 (23 5) (48 1) (70 1) (168 1) 3 80 (23 5) (48 1) (60 1) (168 1) 7.2 Test

43、procedure 7.2.1 Measure the length and width of each specimen to an accuracy of 0,5 %, in accordance with ISO 29768. These dimensions are used for calculating the initial area of the cross-section of the specimen for determining the load. The test shall be carried out with one of the three different

44、 sets of conditions (1, 2 or 3) as shown in Table 1. The set used shall be as specified in the relevant product standard or any other international or European technical specification. Measure the thickness, d s , of each specimen after conditioning in accordance with ISO 29768, to an accuracy of 0,

45、1 mm. 7.2.2 The test is to be made in two steps, A and B, using the following procedure. 7.2.2.1 Step A Load the specimen at a temperature of (23 5) C for (48 1) h with a load corresponding to the set of conditions (1, 2 or 3) selected from Table 1. Determine the thickness, d 1 , of the specimen aft

46、er (48 1) h under load, to the nearest 0,1 mm. 7.2.2.2 Step B Expose the loaded specimen to the temperature for the time indicated, in accordance with the selected set of conditions (1, 2 or 3). Determine the thickness, d 2 , of the specimen after the selected time at the test temperature under the

47、load, to the nearest 0,1 mm. ISO 29764:2008(E) ISO 2008 All rights reserved 58 Calculation and expression of results The results are the mean values of the measurements, which shall be expressed to three significant figures. NOTE Results obtained with specimens of different thicknesses can be differ

48、ent. Calculate the relative deformation, 1 , expressed as a percentage, after step A of the test using Equation (1): s1 1 s 100 dd d = (1) where d sis the thickness of the specimen (in accordance with 7.2) before applying the selected load, expressed in millimetres; d 1is the thickness of the specim

49、en after applying the selected load (in accordance with 7.2.2.1), expressed in millimetres. Calculate the total relative deformation, 2 ,as a percentage, after step B of the test using Equation (2): s2 2 s 100 dd d = (2) where d sis the thickness of the specimen (in accordance with 7.2) before applying the selected load, expressed in millimetres; d 2is the thickness of the specimen after applying the sele