1、 Reference number ISO 29767:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 29767 First edition 2008-11-01 Thermal insulating products for building applications Determination of short- term water absorption by partial immersion Produits isolants thermiques destins aux applications du btiment Dtermination
2、 de labsorption deau court terme par immersion partielle ISO 29767:2008(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 i
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5、d, 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 or mechanical, including photocopying and micr
6、ofilm, 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 Web www.iso.org Published in Switzerland ii ISO 2
7、008 All rights reservedISO 29767:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Principle. 1 4 Apparatus 1 5 Test specimens . 3 6 Procedure 3 7 Calculation and expression of results 5 8 Accuracy of measurement. 5 9 Test repo
8、rt . 6 ISO 29767:2008(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 committees
9、. 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 the Intern
10、ational 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 International Sta
11、ndards 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 the subj
12、ect of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 29767 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 29767:2008(E) ISO 2008 Al
13、l rights reserved v Introduction This International Standard comprises the original EN 1609:1996, EN 1609:1996/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 condition
14、ing 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. Internationa
15、l 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 applicati
16、ons 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 building
17、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 building app
18、lications 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 insulating
19、 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 Determina
20、tion of short- term water absorption by partial immersion EN 1609 ISO 29767:2008(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 building applic
21、ations 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 content E
22、N 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 the adhe
23、sive 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 29767:2008(E) ISO 2008 All rights reserved 1 Thermal insulating
24、products for building applications Determination of short-term water absorption by partial immersion 1 Scope This International Standard specifies the equipment and procedures for determining the short-term water absorption of specimens by partial immersion. This International Standard is applicable
25、 to thermal insulating products. NOTE The procedure specified by this International Standard is intended to simulate the water absorption caused by a 24 h raining period during construction work. 2 Normative references The following referenced documents are indispensable for the application of this
26、document. For dated references, only the edition cited applies. 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,
27、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 Principle A specimen is placed with its lower part in water for a period of 24 h and the change in its mass is measu
28、red. The excess water adhering to the surface but not absorbed by the specimen is removed by drainage (method A) or taken into account by deduction of the initial water uptake (method B). 4 Apparatus 4.1 Balance, capable of determining the mass of a specimen to an accuracy of 0,1 g. 4.2 Water tank,
29、with a device for keeping the water level constant to within 2 mm, and a device to keep the specimen in position. The device to keep the specimen in position shall not cover more than 15 % of the cross-sectional area of the specimen that is exposed to water. An example is shown in Figure 1. 4.3 Tap
30、water, adjusted to a temperature of (23 5) C. ISO 29767:2008(E) 2 ISO 2008 All rights reserved4.4 Equipment for drainage. See examples shown in Figure 2. Dimensions in millimetres Key 1 water tank 2 load to keep the specimen in position 3 test specimen Figure 1 Example of a partial-immersion test de
31、vice a) b) Key 1 stainless steel mesh 2 test specimen 3 perforated stainless steel Figure 2 Examples of equipment suitable for drainage ISO 29767:2008(E) ISO 2008 All rights reserved 3 5 Test specimens 5.1 Dimensions of test specimens The thickness of specimens shall be equal to the original product
32、 thickness. The specimens shall be prisms of square cross section having a side length of (200 1) mm. 5.2 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 four specimens shall be used. In the absenc
33、e of a product standard or any other international or European technical specification, the number of specimens may be agreed between parties. 5.3 Preparation of test specimens The specimens shall be cut so that they do not include product edges. The specimens shall be prepared by methods that do no
34、t change the original structure of the product. Any skins, facings and/or coatings 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. 5.4 Conditioning of test specimens The sp
35、ecimens shall be conditioned 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 stated in the relevant product standard. In tropical countries, different conditioning and testing conditions can be relevant. In this case
36、, the conditions shall be 27 C and 65 % RH and be stated clearly in the test report. 6 Procedure 6.1 Test conditions Testing shall be carried out at (23 5) C. In case of dispute, it shall be carried out at (23 2) C and (50 5) % relative humidity. In tropical countries, different conditioning and tes
37、ting conditions can be relevant. In this case, the conditions shall be 27 C and 65 % RH and be stated clearly in the test report. 6.2 Test procedure The choice of the method (A or B) shall be as specified in the relevant product standard. In the absence of a product standard or any other internation
38、al or European technical specification, the method may be agreed between parties. The dimensions of the specimens shall be measured in accordance with ISO 29768. ISO 29767:2008(E) 4 ISO 2008 All rights reserved6.2.1 Method A Drainage Weigh the specimen to the nearest 0,1 g to determine its initial m
39、ass, m 0 . Testing shall be carried out with half the number of specimens with one larger face up and the other half with one larger face down. Place the specimen in the empty water tank and apply a sufficient load to keep it partially immersed when water is added. Carefully add the water to the tan
40、k until the bottom face of the specimen is (10 2) mm below the surface of the water (see Figure 1). Ensure that the water level remains constant during the test. After 24 h, remove the specimen and drain it for (10 0,5) min by placing it vertically on a mesh, inclined at 45 as shown in Figure 2. The
41、n weigh the specimen to determine its mass and record as m 24 . 6.2.2 Method B Deduction of initial water uptake Weigh the specimen to an accuracy of 0,1 g to determine its initial mass, m 0 . Testing shall be carried out with half the number of specimens with one larger face up and the other half w
42、ith one larger face down. Place the specimen in the water tank so that it is partially immersed in water with its bottom face (10 2) mm below the water level. Remove the specimen after 10 s holding it horizontally and then place it, within 5 s, in a plastic tray of known mass. Weigh this tray with t
43、he specimen to determine the specimen mass including the initial water uptake and record as m 1 . Replace the specimen in the water tank and apply a sufficient load to keep the specimen partially immersed in water with its bottom face (10 2) mm below the water level (see Figure 1). Ensure that the w
44、ater level remains constant during the test. After 24 h, remove the specimen, holding it horizontally, and place it, within 5 s, in a plastic tray of known mass to determine its mass; record as m 24 . Method B is applicable only if the initial water uptake, W u , calculated from Equation (1), is les
45、s than or equal to 0,5 kg/m 2 : 10 u p mm W A = (1) where m 1is the mass of the specimen including the initial water uptake (method B), expressed in kilograms; m 0is the initial mass of the specimen as determined by method A, expressed in kilograms; A pis the bottom surface area of the specimen, exp
46、ressed in square metres. ISO 29767:2008(E) ISO 2008 All rights reserved 5 7 Calculation and expression of results The test result shall be the mean value of the individual values. For products having dissimilar faces, two mean values shall be calculated. Results should not be extrapolated to other t
47、hicknesses. Calculate the short-term water absorption by partial immersion, W p , expressed in kilograms per square metre to the nearest 0,01 kg/m 2 , using Equation (2) for method A and Equation (3) for method B: 24 0 p p mm W A = (2) 24 1 p p mm W A = (3) where m 0is the initial mass of the specim
48、en as determined in method A, expressed in kilograms; m 1is the mass of the specimen including the initial water uptake in method B, expressed in kilograms; m 24 is the mass of the specimen after partial immersion for 24 h (methods A and B), expressed in kilograms; A pis the bottom surface area of t
49、he specimen, expressed in square metres. 8 Accuracy of measurement An inter-laboratory test was conducted with 6 to 10 laboratories testing three products by method A. Six laboratories tested one product by method B. The results were analysed and the terms applied in accordance with ISO 5725-2. The reproducibility results are given in Table 1; repeatability was not determined. Bias cannot be determined in this test method as there is not any a
