1、BRITISH STANDARD BS EN ISO 8340:2005 Building construction Sealants Determination of tensile properties at maintained extension The European Standard EN ISO 8340:2005 has the status of a British Standard ICS 91.100.50 BS EN ISO 8340:2005 This British Standard was published under the authority of the
2、 Standards Policy and Strategy Committee on 18 November 2005 BSI 18 November 2005 ISBN 0 580 46638 8 National foreword This British Standard is the official English language version of EN ISO 8340:2005. It is identical with ISO 8340:2005. It supersedes BS EN 28340:1991 which is withdrawn. The UK par
3、ticipation in its preparation was entrusted to Technical Committee B/547, Sealants for building and construction, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement
4、 international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does no
5、t purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European co
6、mmittee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN IS
7、O foreword page, the ISO title page, pages ii to iv, a blank page, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE N
8、ORM EN ISO 8340 June 2005 ICS 91.100.50 Supersedes EN 28340:1990 English version Building construction - Sealants - Determination of tensile properties at maintained extension (ISO 8340:2005) Construction immobilire - Mastics - Dtermination des proprits de dformation sous traction maintenue (ISO 834
9、0:2005) Hochbau - Fugendichtstoffe - Bestimmung des Zugverhaltens unter Vorspannung (ISO 8340:2005) This European Standard was approved by CEN on 25 May 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th
10、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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German
11、). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denma
12、rk, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROP
13、ISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8340:2005: E Foreword This document (EN ISO 8340:2005) has been prepared by Technical Committ
14、ee ISO/TC 59 “Building construction“ in collaboration with CMC. 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 December 2005, and conflicting national standards shall be withdrawn at the latest b
15、y December 2005. This document supersedes EN 28340:1990. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germ
16、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8340:2005 has been approved by CEN as EN ISO 8340:2005 without any modific
17、ations. EN ISO 8340:2005 Reference number ISO 8340:2005(E)INTERNATIONAL STANDARD ISO 8340 Second edition 2005-06-15 Building construction Sealants Determination of tensile properties at maintained extension Construction immobilire Mastics Dtermination des proprits de dformation sous traction mainten
18、ue EN ISO 8340:2005ii EN ISO 8340:2005 iii Contents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Definitions . 1 4 Principle. 1 5 Apparatus 1 6 Preparation of test specimens 2 7 Conditioning of test specimens 2 8 Test procedure 3 9 Test report . 3 EN ISO 8340:2005 iv Foreword ISO (the I
19、nternational 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. Each member body interested in a subject for which a technical committee
20、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 International Electrotechnical Commission (IEC) on all matters of electrotechnica
21、l 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 Standards adopted by the technical committees are circulated to the member bod
22、ies 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 subject of patent rights. ISO shall not be held responsible for identifying any
23、 or all such patent rights. ISO 8340 was prepared by Technical Committee ISO/TC 59, Building construction, Subcommittee SC 8, Jointing products. This second edition cancels and replaces the first edition (ISO 8340:1984) and its subsequent Technical Corrigendum (ISO 8340:1984/Cor.1:1995), which have
24、been technically revised. 1 Building construction Sealants Determination of tensile properties at maintained extension 1 Scope This International Standard specifies a method for the determination of the tensile properties at maintained extension of sealants used in joints in building construction. N
25、OTE A method for the determination of tensile properties (extension to break) is specified in ISO 8339. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the
26、latest edition of the referenced document (including any amendments) applies. ISO 6927, Building construction Jointing products Sealants Vocabulary ISO 8339, Building construction Sealants Determination of tensile properties (Extension to break) ISO 13640, Building construction Jointing products Spe
27、cification for test substrates 3 Definitions For the purpose of this document, the definitions given in ISO 6927 apply. 4 Principle Test specimens are prepared such that the sealant to be tested adheres to two parallel contact surfaces. The test specimens are extended to a defined width and this ext
28、ension is maintained under defined conditions. Any loss of adhesion or cohesion is recorded. 5 Apparatus 5.1 Substrate materials, used for the preparation of test specimens as defined in ISO 13640. The substrate materials shall be selected from mortar and/or anodized aluminium and/or glass. Other su
29、bstrate materials may be used as agreed by the parties concerned. For each test specimen, two substrate pieces of the same material are required with a cross section of dimensions as shown in Figures 1 and 2. Test substrates of other dimensions may be used, but then the dimensions of the sealant bea
30、d and the area of adhesion shall be the same as those shown in Figures 1 and 2. 5.2 Spacers, of cross section (12 mm 12 mm) with anti-adherent surface. For the preparation of test specimens see Figures 1 and 2. EN ISO 8340:20052 5.3 Anti-adherent substrate, for the preparation of the test specimens,
31、 e.g. polyethylene (PE) film, preferably according to the advice of the sealant manufacturer. 5.4 Tensile test machine, capable of extending the test specimens at a rate of (5,5 0,7) mm/min. 5.5 Refrigerated enclosure, capable of holding the test specimens whilst extended at a temperature of ( 20 2)
32、 C. 5.6 Ventilated convection-type oven, capable of being maintained at (70 2) C for conditioning according to method B (see 7.3). 5.7 Container, for immersing test specimens in distilled water for conditioning according to method B (see 7.3). 5.8 Separators, of appropriate dimensions to hold the te
33、st specimens extended to 25 %, 60 % or 100 % of the original width or any other width agreed between the parties concerned. 5.9 Measuring device, scaled to 0,5 mm. 6 Preparation of test specimens The sealant and test substrates shall be brought to (23 2) C. For each substrate type and each test temp
34、erature (see Clause 8) three test specimens shall be prepared. For each specimen two substrates (5.1) and two spacers (5.2) shall be assembled (see Figure 1) and set on the anti-adherent substrate (5.3). The instructions of the sealant manufacturer concerning, for instance, whether a primer is to be
35、 used and the mixing procedure for multi-component sealants shall be followed. The hollow volume formed by the substrates and the spacers shall be filled with the sealant. The following precautions shall be taken. a) The formation of air bubbles shall be avoided. b) The sealant shall be pressed on t
36、he inner surfaces of the substrates. c) The sealant surface shall be trimmed so that it is flush with the faces of the substrates and spacers. The test specimens shall be set on the edge of one of the supports. The anti-adherent substrate shall be removed as soon as possible. The specimens shall be
37、placed in this position to allow curing or optimum drying of the sealant. The spacers shall be maintained in place during conditioning. 7 Conditioning of test specimens 7.1 General The test specimens shall be conditioned either in accordance with method A (see 7.2) or method B (see 7.3), as agreed b
38、etween the parties concerned. 7.2 Method A The test specimens shall be conditioned for 28 days at (23 2) C and (50 5) % relative humidity. 7.3 Method B The test specimens shall be conditioned according to method A and shall then be subjected three times to the following storage cycle: a) three days
39、in the oven (5.6) at (70 2) C; EN ISO 8340:20053 b) one day in distilled water (5.7) at (23 2) C; c) two days in the oven (5.6) at (70 2) C; d) one day in distilled water (5.7) at (23 2) C. Alternatively, this cycle may be carried out in the order c), d), a), b). After conditioning according to meth
40、od B, the test specimens shall be stored for 24 h at (23 2) C and (50 5) % relative humidity before testing. NOTE Method B is a normal conditioning procedure using the influence of heat and water. It is not suitable for giving information on the durability of the sealant. 8 Test procedure 8.1 Genera
41、l The test procedure shall be carried out at temperatures of (23 2) C and ( 20 2) C. Three test specimens shall be tested at each temperature. 8.2 Test procedure at (23 2) C The spacers (5.2) for the preparation of the test specimens shall be removed and the test specimens placed in the tensile test
42、 machine (5.4) at (23 2) C and extended at a rate of (5,5 0,7) mm/min by 25 % or 60 % or 100 % of the original width (to 15 mm, 19,2 mm and 24 mm respectively), or to any other width as agreed between the parties concerned. The separators (5.8) shall be used to maintain the elongation at (23 2) C fo
43、r 24 h. The depth of any loss of adhesion or cohesion shall be measured using a suitable measuring device capable of reading to 0,5 mm (5.9). 8.3 Test procedure at ( 20 2) C The test specimens shall be stored (5.5) at ( 20 2) C for at least 4 h before the start of the test. The spacers (5.2) for the
44、 preparation of the test specimens shall be removed and the test specimens placed in the tensile test machine (5.4) at ( 20 2) C and extended at a rate of (5,5 0,7) mm/min by 25 % or 60 % or 100 % of the original width (to 15 mm, 19,2 mm and 24 mm respectively), or to any other width as agreed betwe
45、en the parties concerned. The separators (5.8) shall be used to maintain the elongation at ( 20 2) C for 24 h. The test specimens shall be brought to (23 2) C. The depth of any loss of adhesion or cohesion shall be measured using a suitable measuring device capable of reading to 0,5 mm (5.9). 9 Test
46、 report The test report shall contain the following information: a) test laboratorys name and date of test; b) reference to this International Standard; c) name, type (chemical family) and colour of sealant; d) batch of sealant from which the test specimens were produced; e) substrate used (see 5.1)
47、; f) primer used, if applicable; EN ISO 8340:20054 g) method of conditioning used (see Clause 7); h) elongation (%) (see Clause 8); i) depth of any loss of adhesion and/or cohesion break, in millimetres, for each test specimen; j) any deviations from this International Standard. Dimensions in millim
48、etres Key 1 mortar substrates 2 sealant 3 spacer (5.2) Figure 1 Test specimen with mortar substrates EN ISO 8340:20055 Dimensions in millimetres Key 1 anodized aluminium or glass substrates 2 sealant 3 spacer (5.2) Figure 2 Test specimen with anodized aluminium or glass substrates EN ISO 8340:2005BS
49、 EN ISO 8340:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Use
