1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12091:2013Thermal insulating productsfor building applications Determination of freeze-thawresistanceBS EN 12091:2013 BRITISH STANDARDNational forewordThis British Standard
2、 is the UK implementation of EN 12091:2013. Itsupersedes BS EN 12091:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A list of organizations represented on this committee can beobtained
3、 on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI Standards Limited 2013 ISBN 978 0 580 78051 6 ICS 91.100.60 Compliance with
4、a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2013. Amendments issued since publicationDate T e x t a f f e c t e dBS EN 12091:2013EUROPEAN STANDARD NORME EUROPENNE EUR
5、OPISCHE NORM EN 12091 March 2013 ICS 91.100.60 Supersedes EN 12091:1997English Version Thermal insulating products for building applications - Determination of freeze-thaw resistance Produits isolants thermiques destins aux applications du btiment - Dtermination de la rsistance aux effets du gel-dge
6、l Wrmedmmstoffe fr das Bauwesen - Bestimmung des Verhaltens bei Frost-Tau-Wechselbeanspruchung 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 European Standard th
7、e 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 versions (English, Fren
8、ch, 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, Belgium, Bulgaria,
9、 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, Switzerland, Turkey
10、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. Ref. No. EN 1209
11、1:2013: EBS EN 12091:2013EN 12091:2013 (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 General . 6 6.2 Dimensions of test specimens 6 6.3 Number of test specimens . 6 6.4 Preparation of test specimen
12、s . 6 6.5 Conditioning of test specimens. 6 7 Procedure . 6 8 Calculation and expression of results 8 8.1 Water absorption 8 8.2 Changes in the compression behaviour . 9 9 Accuracy of measurement . 9 10 Test report 10 BS EN 12091:2013EN 12091:2013 (E) 3 Foreword This document (EN 12091:2013) has bee
13、n 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 standard, either by publication of an identical text or by endorsement, at the latest by September 2013, an
14、d conflicting national standards shall be withdrawn 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. T
15、his document supersedes EN 12091:1997. The revision 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 ins
16、ulating 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 relating to construction pr
17、oducts (Directive 89/106/EEC) through the consideration 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 standar
18、ds on test methods for determining dimensions and 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
19、 applications Determination of thickness EN 824, Thermal 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 co
20、mpression behaviour EN 1602, Thermal insulating products 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
21、1604, Thermal insulating products for building applications 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 conditio
22、ns EN 1606, Thermal insulating products for building applications Determination of compressive creep BS EN 12091:2013EN 12091:2013 (E) 4 EN 1607, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608, Thermal insulating products for bu
23、ilding applications Determination of tensile strength 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
24、of test specimens EN 12086, Thermal insulating products 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 b
25、uilding applications Determination of long-term water 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 insulati
26、ng products for building applications Determination 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 Deter
27、mination of behaviour under point load EN 12431, Thermal 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 i
28、nsulating materials for building applications Determination 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
29、, 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, Switzerland, Turkey and the United Kingdom. BS EN 12
30、091:2013EN 12091:2013 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining the effect of successive cycling from dry conditions at -20 C to wet conditions at 20 C on the mechanical properties and moisture content of the product. It is applicable to thermal insu
31、lating products. It is intended to simulate freeze-thaw effects on thermal insulating products which are frequently exposed to water and low temperature conditions, e.g. inverted roofs and unprotected ground insulation. This test method is not recommended for all thermal insulating products. If rele
32、vant, the product standards will state for which products this standard is applicable. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For
33、 undated references, the latest edition of the referenced document (including any amendments) applies. EN 826, Thermal insulating products for building applications Determination of compression behaviour EN 12087, Thermal insulating products for building applications Determination of long term water
34、 absorption by immersion EN 12088, Thermal insulating products for building applications Determination of long term water absorption by diffusion 3 Terms and definitions For the purposes of this document, the following term and definition applies. 3.1 freeze-thaw resistance ability of a product to w
35、ithstand repeated wetting followed by freezing conditions, quantified by water absorption and change in compression behaviour 4 Principle The freeze-thaw resistance is determined as the change in the amount of water absorbed and the change in compression strength or stress of a test specimen which i
36、s subjected to 300 successive cycles from dry conditions at -20 C to wet conditions at 20 C. Testing is carried out in conjunction with either one of the following long term water absorption tests: a) Water absorption by diffusion according to EN 12088; b) Water absorption by total immersion accordi
37、ng to EN 12087. The chosen long-term water absorption test a) and/or b) is given in the relevant product standard in accordance to the application. Freezing takes place in the air; thawing in the water. 5 Apparatus 5.1 Cold chamber, with a constant temperature of (-20 2) C. 5.2 Watertank, with a con
38、stant water temperature of (20 2) C equipped with a device for keeping the test specimen in position. BS EN 12091:2013EN 12091:2013 (E) 6 Normally no accelerated thermal exchange is provided, e.g. fan assistance in the cold chamber or turbulent water circulation in the watertank. 5.3 Balance, which
39、permits reading to 0,1 g. 5.4 Compression testing machine, including measuring devices according to EN 826. 6 Test specimens 6.1 General The freeze-thaw test shall be made on the same test specimens, referred to as set A, which have been used for the determination of long-term water absorption by di
40、ffusion according to EN 12088, or by total immersion according to EN 12087. 6.2 Dimensions of test specimens The thickness of the test specimens shall be the original product thickness. The test specimens for set A shall be squares with squarely cut edges having sides of (500 1) mm or (200 1) mm dep
41、ending on the chosen water absorption test. 6.3 Number of test specimens The number of test specimens for set A is determined by the requirement that two sets of test specimens for the compression test (set B1 and B2) can be prepared from set A. The number and dimensions of test specimens for each s
42、et B1 and B2 for the compression test shall be as specified in the relevant product standard or any other European Technical Specification. In the absence of such a specification, the number and dimensions of test specimens shall be as defined in EN 826. The number of test specimens for the long-ter
43、m water absorption should be adapted accordingly. 6.4 Preparation of test specimens If possible, the test specimens shall be cut so that they do not include original product edges. Cutting of the test specimens shall be by methods that do not change the original structure of the product. Any skins,
44、facings and/or coatings shall be retained. 6.5 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 specified in the relevant product standard with a minimum of
45、6 h. 7 Procedure Carry out the freeze-thaw test in accordance with the procedure indicated in Figure 1. All test specimens shall be taken from the same sample. BS EN 12091:2013EN 12091:2013 (E) 7 Figure 1 Flow chart for the test procedure Determine the compression behaviour of the original product i
46、n accordance with EN 826 (mor 10). Determine the long-term water absorption of the test specimens using either EN 12088 or EN 12087. Record m0, the mass of test specimens at the end of the diffusion test (m0= mD) or the total immersion test (m0= m28). Place the test specimens in the cold chamber and
47、 maintain the temperature at (-20 2) C for 1 h. Remove the test specimens from the cold chamber and immerse them in water. Maintain the temperature at (20 2) C for 1 h. Continue the test for 300 cycles (see Figure 2). When there are breaks longer than 1 h, e.g. during the night or the weekend, the t
48、est specimens shall be left in the cold chamber. Determine the mass m1, of each of the test specimens (set A) to the nearest 0,1 g after completion of all cycles. Examine the test specimens visually for defects, e.g. cracks, blisters. Prepare the test specimens for set B1 and set B2. Determine the c
49、ompression behaviour of the test specimens, in accordance with EN 826, from set B1 (compression behaviour in wet conditions, m,wetor 10,wet) within 24 h of the last freeze-thaw cycle. Dry the test specimens from set B2 in a ventilated drying chamber for the time and temperature specified in the relevant product standard or any other European Technical Specification. In the absence of such a BS EN 12091:2013EN 12091:2013 (E) 8 specifi
