1、 Reference number ISO 29766:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 29766 First edition 2008-11-01 Thermal insulating products for building applications Determination of tensile strength parallel to faces Produits isolants thermiques destins aux applications du btiment Dtermination de la rsistanc
2、e la traction paralllement aux faces ISO 29766:2008(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 typefaces which are embedded are licensed to and installed on the comp
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5、 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 or mechanical, including photocopying and microfilm, without permi
6、ssion 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 Web www.iso.org Published in Switzerland ii ISO 2008 All rights reser
7、vedISO 29766:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 1 5 Apparatus 2 6 Test specimens . 2 7 Procedure 4 8 Calculation and expression of results 4 9 Accuracy of measurement. 4 10 T
8、est report . 5 ISO 29766:2008(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 is normally carried out through ISO technical co
9、mmittees. 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 part in the work. ISO collaborates closely with th
10、e 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 prepare International Standards. Draft Internati
11、onal 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 that some of the elements of this document may be
12、the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 29766 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the built environment, Subcommittee SC 1, Test and measurement methods. ISO 29766:2008(E) ISO
13、 2008 All rights reserved v Introduction This International Standard comprises the original EN 1608:1996, EN 1608:1996/AC:1997 and its Amendment 1:2006 prepared by Technical Committee CEN/TC 88, Thermal insulating materials and products, which have been amended by ISO/TC 163/SC 1 with reference to c
14、onditioning 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 following group of interrelated documents. Inte
15、rnational 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 29467, Thermal insulating products for building a
16、pplications 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 826 ISO 29470, Thermal insulating products for b
17、uilding 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 ISO 29472, Thermal insulating products for buil
18、ding 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 temperature conditions EN 1605 ISO 29765, Thermal in
19、sulating 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 insulating products for building applications D
20、etermination of short- term water absorption by partial immersion EN 1609 ISO 29766:2008(E) vi ISO 2008 All rights reservedISO 29768, Thermal insulating products for building applications Determination of linear dimensions of test specimens EN 12085 ISO 29769, Thermal insulating products for buildin
21、g 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 building applications Determination of organic c
22、ontent 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 applications Determination of the tensile bond strength of
23、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 29766:2008(E) ISO 2008 All rights reserved 1 Thermal ins
24、ulating products for building applications Determination of tensile strength parallel to faces 1 Scope This International Standard specifies the equipment and procedures for determining the tensile strength of a product parallel to its faces. This International Standard is applicable to thermal insu
25、lating products. This International Standard can be used to determine whether the product has sufficient strength to withstand stresses during transportation and application. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated r
26、eferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 29466, Thermal insulating products for building applications Determination of thickness ISO 29768, Thermal insulating products for building applica
27、tions Determination of linear dimensions of test specimens ISO 5725-1, Accuracy (trueness and precision) 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 determi
28、nation 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 tensile strength parallel to faces tmaximum recorded tensile force parallel to the product faces during the pulling ope
29、ration, divided by the cross-sectional testing area of the specimen 4 Principle A specimen is attached to two clamps that are fastened in a tensile testing machine and pulled apart at a given speed. The maximum tensile force is recorded and the tensile strength of the specimen is calculated. ISO 297
30、66:2008(E) 2 ISO 2008 All rights reserved5 Apparatus Any test equipment or method which provides the same result with at least the same accuracy may be used. 5.1 Tensile testing machine, appropriate for the range of force and displacement involved, capable of having a constant crosshead speed adjust
31、ed to (10 1) mm/min and capable of measuring the force to an accuracy of 1 %. 5.2 Two clamps, designed so as to avoid failure of the specimen in the area of the clamps. The clamps shall be positioned so that the tensile stress is uniformly distributed during the test. An example of suitable equipmen
32、t is shown in Figure 1. Figure 1 Example of a suitable clamp 6 Test specimens 6.1 Dimensions of test specimens The thickness of the specimens shall be the original product thickness including any skins, facings and/or coatings. The specimens shall be cut with the shape and with the dimensions shown
33、in Figure 2. For small products or because of equipment limitations, the specimen length and width shall be adjusted proportionally, but with a minimum length of 500 mm. Other specimen shapes which provide the same result to at least the same accuracy may be used. ISO 29766:2008(E) ISO 2008 All righ
34、ts reserved 3 Dimensions in millimetres aTesting area. Figure 2 Test specimen shape and dimensions 6.2 Number of test specimens 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. In the absence
35、of a product standard or any other international or European technical specification, the number of specimens may be agreed between parties. 6.3 Preparation of test specimens The specimens shall be cut from the full-size product so that the length direction corresponds to the direction in which the
36、tensile force is applied to the product in its application. Specimens shall be prepared by methods that do not change the original structure of the product. NOTE Special methods of preparation, when needed, are given in the relevant product standard or any other international or European technical s
37、pecification. 6.4 Conditioning of test specimens The specimens shall be conditioned for at least six hours at (23 5) C. In case of dispute, they shall be conditioned at (23 2) C and (50 5) % relative humidity for the time stated in the relevant product standard. In tropical countries, different cond
38、itioning and testing conditions can be relevant. In this case, the conditions shall be 27 C and 65 % RH and be stated clearly in the test report. ISO 29766:2008(E) 4 ISO 2008 All rights reserved7 Procedure 7.1 Test conditions Testing shall be carried out at (23 5) C. In case of dispute, it shall be
39、carried out at (23 2) C and (50 5) % relative humidity. In tropical countries, different conditioning and testing conditions can be relevant. In this case, the conditions shall be 27 C and 65 % RH and be stated clearly in the test report. 7.2 Test procedure Measure the thickness, d, expressed in mil
40、limetres to the nearest millimetre, of the testing area in accordance with ISO 29466. Measure the length, l, of the specimen and the width, b, of the testing area, both expressed in millimetres to the nearest millimetre, in accordance with ISO 29768. Attach the specimen centrally between two clamps
41、to distribute the stress uniformly. Place it carefully in the tensile testing machine and increase the tensile force at a constant speed of the crosshead (see 5.1) until failure occurs. Record the maximum tensile force in kilonewtons. Record the way in which the product failed. Discard any specimen
42、that fails outside the testing area (see Figure 2). 8 Calculation and expression of results Calculate the tensile strength, t , expressed in kilopascals, parallel to faces, using Equation (1): m t F db = (1) where F mis the maximum tensile force recorded, expressed in kilonewtons (kN); d is the thic
43、kness of the testing area, expressed in metres; b is the width of the testing area, expressed in metres. The result shall be expressed as the mean value of the measurements, expressed to two significant figures. 9 Accuracy of measurement Following the experience from a “round robin test”, where comp
44、arable test equipment and specimen preparation were used, the precision, t , for tensile strength can be estimated as given below. 95 % repeatability limit: approximately 3 %; 95 % reproducibility limit: approximately 10 %. The above-mentioned terms are applied in accordance with ISO 5725-1 and ISO
45、5725-2. ISO 29766:2008(E) ISO 2008 All rights reserved 5 10 Test report The test report shall include the following information: a) a reference to this International Standard: b) product identification: 1) product name, factory, manufacturer, or supplier, 2) production code number, 3) type of produc
46、t, 4) packaging, 5) form in which the product arrived at the laboratory, 6) other information as appropriate (e.g. nominal dimensions, nominal density); c) test procedure: 1) pre-test history and sampling (e.g. person taking the sample, place of sampling), 2) conditioning, 3) dimensions and number o
47、f the test specimens, 4) any deviation from Clauses 6 and 7, 5) conditioning and testing conditions in tropical countries, if applicable, 6) date of testing, 7) general information relating to the test, 8) events that can have effected the results; d) results: all individual values and mean value. NOTE It is expected that information about the apparatus and identity of the person responsible for the test be available in the laboratory, but it is not necessary that it be recorded in the report. ISO 29766:2008(E) ICS 91.100.60 Price based on 5 pages ISO 2008 All rights reserved
