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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12087 : 1997 The Eu
2、ropean Standard EN 12087 : 1997 has the status of a British Standard ICS 91.100.99 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Thermal insulating products for building applications Determination of long term water absorption by immersion This British Standard, having been
3、prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 November 1997 BSI 1997 ISBN 0 580 28605 3 BS EN 12087 : 1997 Amendments issued since publication Amd. No.DateText affected Nationa
4、l foreword This British Standard is the English language version of EN 12087 : 1997. The UK participation in its preparation was entrusted to Subcommittee B/540/1, European Standards for thermal insulation, which has the responsibility to: aid enquirers to understand the text; present to the respons
5、ible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its sec
6、retary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards E
7、lectronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. CEN European Committee for Standa
8、rdization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12087 : 1997 E EUROPEAN STANDARDEN 12087 N
9、ORME EUROPE ENNE EUROPA ISCHE NORM June 1997 ICS 91.100.99 Descriptors: Buildings, thermal insulation, thermal insulating materials, water absorption tests, immersion tests, test specimen, procedure, testing conditions, computation English version Thermal insulating products for building application
10、s Determination of long term water absorption by immersion Produits isolants thermiques destine s aux applications du ba timent De termination de labsorption deau a long terme Essai par immersion Wa rmeda mmstoffe fu r das Bauwesen Bestimmung der Wasseraufnahme bei langzeitigem Eintauchen This Europ
11、ean Standard was approved by CEN on 1997-04-26. 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 references concern
12、ing such national standards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own lan
13、guage 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, Spain, Sweden,
14、 Switzerland and United Kingdom. Page 2 EN 12087 : 1997 BSI 1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 88, Thermal insulating materials and products, the secretariat of which is held by DIN. This European Standard shall be given the status of a national stan
15、dard, either by publication of an identical text or by endorsement, at the latest by December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997. This European Standard is one of a series of standards which specify test methods for determining dimensions and p
16、roperties of thermal insulating materials and products. It supports a series 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 rel
17、ating to construction products (Directive 89/106/EEC) through the consideration of the essential requirements. This European Standard has been drafted for applications in buildings but may also be used in other areas where it is relevant. In pursuance of Resolution BT 20/1993 Revised, CEN/TC 88 have
18、 proposed defining the standards listed below as a European package of standards, setting December 31, 1997 as the date of withdrawal (dow) of national standards which conflict with the European Standards of this package. The package of standards comprises the following group of inter-related standa
19、rds on test methods for determining dimensions and properties of thermal insulation materials and products, all of which come within the scope of CEN/TC 88: EN 822Thermal insulating products for building applications Determination of length and width EN 823Thermal insulating products for building ap
20、plications Determination of thickness EN 824Thermal insulating products for building applications Determination of squareness EN 825Thermal insulating products for building applications Determination of flatness EN 826Thermal insulating products for building applications Determination of compression
21、 behaviour EN 1602Thermal insulating products for building applications Determination of the apparent density EN 1603Thermal insulating products for building applications Determination of dimensional stability under constant normal laboratory conditions (23 C/50 % relative humidity) EN 1604Thermal i
22、nsulating products for building applications Determination of dimensional stability under specified temperature and humidity conditions EN 1605Thermal insulating products for building applications Determination of deformation under specified compressive load and temperature conditions EN 1606Thermal
23、 insulating products for building applications Determination of compressive creep EN 1607Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608Thermal insulating products for building applications Determination of tensile strength paral
24、lel to faces EN 1609Thermal 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 products for bui
25、lding 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 water absorption
26、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 Determination of freeze-thaw r
27、esistance According to the CEN/CENELEC Internal Regulations, the national 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, N
28、orway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 3 EN 12087 : 1997 BSI 1997 Contents Page Foreword2 1Scope4 2Normative references4 3Definitions4 4Principle4 5Apparatus4 6Test specimens6 7Procedure6 8Calculation and expression of results8 9Accuracy of measurement9 10Test repor
29、t9 Page 4 EN 12087 : 1997 BSI 1997 1Water tank 2Load to keep the test specimen in position 3Test specimen Figure 1. Example of partial immersion test device (method 1A and 1B) 1 Scope This European Standard specifies the equipment and procedures for determining the long term water absorption of test
30、 specimens. It is applicable to thermal insulating products. This European Standard specifies two options: Method 1 partial immersion Method 2 total immersion The long term water absorption by partial immersion is intended to simulate the water absorption caused by long term water exposure. The long
31、 term water absorption by total immersion is not directly related to the conditions on site, but has been recognized as a relevant condition of test for some products in some applications. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from othe
32、r publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of these publications apply to this European Standard only when incorporated in it by amendment or revisio
33、n. For undated references the latest edition of the publication referred to applies. EN 12085Thermal insulating products for building applications Determination of linear dimensions of test specimens 3 Definitions This European Standard contains no definitions. 4 Principle 4.1 Partial immersion (met
34、hod 1) The long term water absorption by partial immersion is determined by measuring the change in mass of a test specimen, the lower part of which is in contact with water for a period of 28 days. The excess water adhering to the surface, not absorbed by the test specimen, is removed by drainage i
35、n method 1A or taken into account by deduction of the initial water uptake in method 1B. 4.2 Total immersion (method 2) The long term water absorption by total immersion is determined by measuring the change in mass of the test specimen, totally immersed in water, over a period of 28 days. The exces
36、s water adhering to the surface, not absorbed by the test specimen, is removed by drainage in method 2A or taken into account by deduction of the initial water uptake in method 2B. 5 Apparatus 5.1 Balance, which allows the determination of the mass of a test specimen to 0,1 g. 5.2 Water tank, with a
37、 device for keeping the water level constant to within2 mm, and a device to keep the test specimen in the required position. Examples of test devices are given in figures 1, 2 and 3. The device to keep the test specimen in position shall not cover more than 15 % of the cross section area of the test
38、 specimen, which is exposed to water. The device shall be such that the original form of the test specimen is maintained. 5.3 Tap water, adjusted to a temperature of (235) C. 5.4 Equipment for drainage. The principle for methods 1A and 2A is illustrated in figures 4a and 4b. Page 5 EN 12087 : 1997 B
39、SI 1997 1Water tank 2Load to keep the test specimen in position 3Test specimen Figure 2. Example of equipment for the determination of water absorption by total immersion (method 2A and 2B) 1Balance 2Weighing table 3Linkage 4Water container 5Water 6Mesh cage made of stainless material with fixing ro
40、ds or a sinker large enough in mass to compensate for the upthrust of the test specimen 7Test specimen Figure 3. Example of equipment for determination of water absorption by total immersion (method 2C) Page 6 EN 12087 : 1997 BSI 1997 a)b) 1Stainless steel mesh 2Test specimen 3Perforated stainless s
41、teel Figure 4. Examples of equipment for drainage 6 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 (2001) mm. 6.2 Number of test specimens The num
42、ber of test specimens shall be as specified in the relevant product standard or any other European technical specification. In the absence of such a specification, at least four test specimens shall be used. NOTE. In the absence of a product standard or any other European technical specification the
43、 number of test specimens may be agreed between parties. 6.3 Preparation of test specimens The test specimens shall be cut so that they do not include original product edges. Test specimens shall be prepared by methods that do not substantially change the original structure of the product. Any skins
44、, facings and/or coatings shall be retained. NOTE. Special methods of preparation, when needed, are given in the relevant product standard or any other European technical specification. 6.4 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (235) C. In case of disp
45、ute they shall be stored at (232) C and (505) % relative humidity for the time stated in the relevant product standard with a minimum of 6 h. 7 Procedure 7.1 Test conditions The test shall be carried out at (235) C. In case of dispute it shall be carried out at (232) C. 7.2 Test procedure The method
46、 shall be as specified in the relevant product standard or any other European technical specification. NOTE 1. In the absence of such a specification the method may be agreed between parties. The long term water absorption is determined after 28 days immersion. NOTE 2. If requested, readings can be
47、made at shorter time periods, e.g. after 7 and 14 day immersion periods. The dimensions of the test specimens shall be measured in accordance with EN 12085 to the nearest 0,5 mm before the test. NOTE 3. If any dimensional changes are noticed after the immersion period the dimensions of the test spec
48、imens should be measured again. 7.2.1 Long term water absorption by partial immersion (method 1) Method 1A (drainage) Weigh the test specimen to the nearest 0,1 g to determine its initial mass, m0. The test is made with half of the test specimens with one major face upwards and with the other half w
49、ith the same major face downwards. Place the test 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 tank until the bottom face of the test specimen is (102) mm below the surface of the water (see example in figure 1). Ensure that the water level remains constant during the test. Page 7 EN 12087 : 1997 BSI 1997 After 28 days remove the test specimen; drain it for (100,5) min by placing