1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationThermal insulating products for building applications Determination of long term water absorption by diffusionBS EN 12088:2013National forewordThis British Standard is the UK imp
2、lementation of EN 12088:2013. Itsupersedes BS EN 12088:1997 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeB/540, Energy performance of materials components and buildings.A list of organizations represented on this committee can be obtained onrequest t
3、o its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013 Published by BSI Standards Limited 2013 ISBN 978 0 580 78047 9 ICS 91.100.60Compliance with a British Stan
4、dard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 12088:2013EUROPEAN STANDARD NORME EUROPENNE E
5、UROPISCHE NORM EN 12088 March 2013 ICS 91.100.60 Supersedes EN 12088:1997English Version Thermal insulating products for building applications - Determination of long term water absorption by diffusion Produits isolants thermiques destins aux applications du btiment - Dtermination de labsorption dea
6、u long terme - Essai par diffusion Wrmedmmstoffe fr das Bauwesen - Bestimmung der Wasseraufnahme durch Diffusion 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 Eu
7、ropean Standard the status of a national standard without any alteration. 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 versi
8、ons (English, French, German). A version in any other language 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,
9、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, Spain, Sweden, Sw
10、itzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION 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
11、. Ref. No. EN 12088:2013: EBS EN 12088:2013EN 12088:2013 (E) 2 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 6 6.1 Dimensions of test specimens 6 6.2 Number of test specimens . 7 6.3 Preparation of test specim
12、ens . 7 6.4 Conditioning of test specimens. 7 7 Procedure - Test procedure . 7 8 Calculation and expression of results 7 9 Accuracy of measurement . 8 10 Test report 8 BS EN 12088:2013EN 12088:2013 (E) 3 Foreword This document (EN 12088:2013) has been prepared by Technical Committee CEN/TC 88 “Therm
13、al 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 identical text or by endorsement, at the latest by September 2013, and conflicting national standards shall be withdraw
14、n 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 held responsible for identifying any or all such patent rights. This document supersedes EN 12088:1997. The revisio
15、n 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 methods for determining dimensions and properties of thermal insulating materials and products. It supports a seri
16、es 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 administrative provisions of the Member States relating to construction products (Directive 89/106/EEC) through the consider
17、ation 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 test standard is one of the following group of inter-related standards on test methods for determining dimensions and
18、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 length and width EN 823, Thermal insulating products for building applications Determination of thickness EN 824, T
19、hermal insulating products for building applications Determination of squareness EN 825, Thermal insulating products for building applications Determination of flatness EN 826, Thermal insulating products for building applications Determination of compression behaviour EN 1602, Thermal insulating pr
20、oducts for building applications Determination of the apparent density EN 1603, Thermal insulating products for building applications Determination of dimensional stability under constant normal laboratory conditions (23 C/50 % relative humidity) EN 1604, Thermal insulating products for building app
21、lications Determination of dimensional stability under specified temperature and humidity conditions EN 1605, Thermal insulating products for building applications Determination of deformation under specified compressive load and temperature conditions EN 1606, Thermal insulating products for buildi
22、ng applications Determination of compressive creep BS EN 12088:2013EN 12088:2013 (E) 4 EN 1607, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608, Thermal insulating products for building applications Determination of tensile stren
23、gth parallel to faces EN 1609, Thermal insulating products for building applications Determination of short-term water absorption by partial immersion EN 12085, Thermal insulating products for building applications Determination of linear dimensions of test specimens EN 12086, Thermal insulating pro
24、ducts for building applications Determination of water vapour transmission properties EN 12087, Thermal insulating products for building applications Determination of long-term water absorption by immersion EN 12088, Thermal insulating products for building applications Determination of long-term wa
25、ter absorption by diffusion EN 12089, Thermal insulating products for building applications Determination of bending behaviour EN 12090, Thermal insulating products for building applications Determination of shear behaviour EN 12091, Thermal insulating products for building applications Determinatio
26、n of freeze-thaw resistance EN 12429, Thermal insulating products for building applications Conditioning to moisture equilibrium under specified temperature and humidity conditions EN 12430, Thermal insulating products for building applications Determination of behaviour under point load EN 12431, T
27、hermal insulating products for building applications Determination of thickness for floating floor insulating products EN 13793, Thermal insulating products for building applications Determination of behaviour under cyclic loading EN 13820, Thermal insulating materials for building applications Dete
28、rmination of organic content According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Repub
29、lic of Macedonia, 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 the United Kingdom. BS EN 12088:2013EN
30、12088:2013 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining the long-term water absorption of test specimens by diffusion. It is applicable to thermal insulating products. It is intended to simulate the water absorption of products subjected to high relativ
31、e humidities, approximating to 100 %, on both sides and subjected to a water vapour pressure gradient for a long period of time e.g. inverted roof or unprotected ground insulation. The test is not applicable for all types of thermal insulating products. The product standard should state for which of
32、 its products, if any, this test is applicable. NOTE For unprotected ground insulation, the temperature of 50 C might be replaced by a lower temperature, when more data is available. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and
33、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 dimensions of
34、 test specimens 3 Terms and definitions This European Standard contains no terms and definitions. 4 Principle The long-term water absorption by diffusion is determined by measuring the increase in the mass of a test specimen subjected to a water vapour pressure difference and temperature gradient fo
35、r a period of 28 days. 5 Apparatus 5.1 Balance, which allows the determination of the mass of a test specimen to 0,1 g. 5.2 Corrosion resistant container, with a frame supporting the test specimens. 5.3 Heating device, with a thermostat, which provides water temperature control to (50 1) C. 5.4 Cool
36、ing plate, thermally insulated on the outside, operating at a temperature of (1 0,5) C. 5.5 Tap water, adjusted to a temperature of (50 1) C. The principle of the apparatus assembly is illustrated in Figure 1. BS EN 12088:2013EN 12088:2013 (E) 6 Dimensions in millimetres Key 1 cooling plate 2 therma
37、l insulation of the cooling plate and the container 3 cooling medium inlet and outlet 4 test specimen 5 corrosion resistant container with a frame supporting the test specimen 6 tap water 7 heating device with a thermostat 8 sealing Figure 1 Example of test device for water absorption by diffusion 6
38、 Test specimens 6.1 Dimensions of test specimens The thickness of the test specimens shall be the original product thickness. The test specimens shall be squares with squarely cut edges having sides of (500 1) mm. If the product is not large enough to permit this size of test specimen, the test spec
39、imen size shall be reduced accordingly. Test specimens shall contain no joints. BS EN 12088:2013EN 12088:2013 (E) 7 6.2 Number of test specimens The number of test specimens shall be at least two. 6.3 Preparation of test specimens The test specimens shall be cut so that they do not include original
40、product edges. Test specimens shall be prepared by methods that do not substantially change the original structure of the product. Any facings, skins and/or coatings shall be retained. Special methods of preparation, when needed, are given in the relevant product standard or any other European Techn
41、ical Specification. 6.4 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (23 5) C. In case of dispute, they shall be stored at (23 2) C and (50 5) % relative humidity for the time stated in the relevant product standard with a minimum of 6 h. 7 Procedure - Test p
42、rocedure The dimensions of the test specimens shall be measured in accordance with EN 12085. Weigh the test specimen to the nearest 0,1 g to determine its initial mass, m0. Place the test specimen on the frame of the container. If the product is faced on one side, begin the test with the facing upwa
43、rds. Seal the bottom edge of the test specimen to the container. The width of the sealing shall be 10 mm (see Figure 1). Place the insulated cooling plate on the top of the test specimen. Subject the test specimen to a temperature and a water vapour pressure difference for 28 days by maintaining the
44、 water at a temperature of (50 1) C and the cooling on the other side at a temperature of (1 0,5) C. Turn the test specimen over every 7 days. After 28 days remove the test specimen and wipe off any surface water. Weigh the test specimen again to determine its mass, mD. 8 Calculation and expression
45、of results The test result, Wdpor WdV, shall be the mean value of the individual values. Results shall not be extrapolated to other thicknesses. Calculate the long term water absorption by diffusion for each test specimen, Wdpor WdV, in kilograms per square metre or volume percent using Formula (1)
46、or (2): Wdp= Am- mp0D(1) WdV= Wp0D100x d x Am- m(2) where m0is the initial mass of the test specimen, in kilograms; BS EN 12088:2013EN 12088:2013 (E) 8 mDis the mass of the test specimen after submission to water absorption by diffusion for 28 days, in kilograms; Apis the bottom surface area of the
47、test specimen, in square metres; d is the thickness of the test specimen, in metres; Wis the density of water, assumed to be 1 000 kg/m3. Wdpshall be rounded to the nearest 0,01 kg/m2. WdVshall be rounded to the nearest 0,1 volume percent. 9 Accuracy of measurement NOTE It has not been possible to i
48、nclude a statement on the accuracy of measurement in this edition of the standard, but it is intended to include such a statement when the standard is next revised. 10 Test report The test report shall include the following information: a) reference to this European Standard; b) product identificati
49、on: 1) product name, factory, manufacturer or supplier; 2) production code number; 3) type of product; 4) packaging; 5) the form in which the product arrived at the laboratory; 6) other information as appropriate, e.g. nominal thickness, nominal density; c) test procedure: 1) pre-test history and sampling (e.g. who sampled and place of sampling); 2) conditioning; 3) deviation from Clauses 6 and 7, if any; 4) date of tes
