BS EN 14187-8-2017 Cold applied joint sealants Test methods Determination of the artificial weathering by UV-irradiation《冷用密封胶 试验方法 用紫外线照射法进行人工风化测定》.pdf

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1、BS EN 14187-8:2017Cold applied joint sealants T e s t m e t h o d sPart 8: Determination of the artificialweathering by UV-irradiationBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 14187-8:2017 BRITISH STANDARDNational forewordThis British Standard is the UK i

2、mplementation of EN 14187-8:2017. It supersedes BS EN 14187-8:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/510/3, Materials for concrete roads.A list of organizations represented on this committee can be obtained on request to its secretary.T

3、his publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 87740 7 ICS 91.100.50; 93.080.20 Compliance with a British Standard

4、cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 14187-8:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISC

5、HE NORM EN 14187-8 March 2017 ICS 93.080.20 Supersedes EN 14187-8:2003English Version Cold applied joint sealants - Test methods - Part 8: Determination of the artificial weathering by UV-irradiation Mastics pour joints appliqus froid - Mthodes dessai - Partie 8 : Dtermination du vieillissement arti

6、ficiel par rayonnement UV Kalt verarbeitbare Fugenmassen - Prfverfahren - Teil 8: Bestimmung der knstlichen Bewitterung durch UV-Bestrahlung This European Standard was approved by CEN on 6 February 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co

7、nditions for giving this European 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 exi

8、sts 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 language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national st

9、andards bodies of Austria, 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, Serbia, Sl

10、ovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any me

11、ans reserved worldwide for CEN national Members. Ref. No. EN 14187-8:2017 EBS EN 14187-8:2017EN 14187-8:2017 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Principle . 5 5 Apparatus and materials 5 6 Preparation of test specimens 6 7 Condit

12、ioning 7 8 Procedure. 7 9 Expression of results 8 10 Test report . 9 BS EN 14187-8:2017EN 14187-8:2017 (E) 3 European foreword This document (EN 14187-8:2017) has been prepared by Technical Committee CEN/TC 227 “Road materials”, the secretariat of which is held by DIN. This European Standard shall b

13、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention is drawn to the possibility that some of the elements of this doc

14、ument may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document will supersede EN 14187-8:2003. Apart from editorial changes the following major changes have been made in this revision: a) Change of title b) Definition of the

15、light source c) Definition of black standard thermometer d) Test temperature of (40 10) C and the method to wet the test specimens by water spray or immersion This European Standard is one of a series of standards as listed below: EN 14187-1, Cold applied joint sealants Test methods Part 1: Determin

16、ation of rate of cure. EN 14187-2, Cold applied joint sealants Test methods Part 2: Determination of tack free time. EN 14187-3, Cold applied joint sealants Test methods Part 3: Determination of self-levelling properties. EN 14187-4, Cold applied joint sealants Test methods Part 4: Determination of

17、the change in mass and volume after immersion in test fuels and liquid chemicals. EN 14187-5, Cold applied joint sealants Test methods Part 5: Determination of the resistance to hydrolysis. EN 14187-6, Cold applied joint sealants Test methods Part 6: Determination of the adhesion/cohesion properties

18、 after immersion in test fuels and liquid chemicals. EN 14187-7, Cold applied joint sealants Test methods Part 7: Determination of the resistance to flame. EN 14187-8, Cold applied joint sealants Test methods Part 8: Determination of the resistance to artificial weathering by UV-irradiation. EN 1418

19、7-9, Cold applied joint sealants Test methods Part 9: Function testing of joint sealants. BS EN 14187-8:2017EN 14187-8:2017 (E) 4 WARNING Attention is drawn to the health and safety at work and the need to ensure that this test is carried out under suitable environmental conditions to provide adequa

20、te protection to persons against the risk of contact or inhalation of toxic products. 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 R

21、epublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Ki

22、ngdom. BS EN 14187-8:2017EN 14187-8:2017 (E) 5 1 Scope This European Standard describes a test method for evaluating the resistance of cold applied joint sealants to the action of UV-light by determination of the change of physical properties after irradiation by artificial UV-light. 2 Normative ref

23、erences 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 undated references, the latest edition of the referenced document (including any amendments) applies.

24、 EN 13880-12, Hot applied joint sealants - Part 12: Test method for the manufacture of concrete test blocks for bond testing (recipe methods) EN 14188-4, Joint fillers and sealants - Part 4: Specifications for primers to be used with joint sealants EN ISO 4892-1, Plastics - Methods of exposure to la

25、boratory light sources - Part 1: General guidance (ISO 4892-1) EN ISO 4892-2, Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps (ISO 4892-2) EN ISO 6927, Buildings and civil engineering works - Sealants - Vocabulary (ISO 6927) EN ISO 8340, Building construction - S

26、ealants - Determination of tensile properties at maintained extension (ISO 8340) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 6927 apply. 4 Principle Test specimens of the cured cold applied joint sealant are exposed to artificial light, water

27、or humidity and elevated temperatures under defined conditions and constant elongation. 5 Apparatus and materials 5.1 Artificial light source with suitable filters, for a simulation of the visible and ultraviolet part of daylight. The spectral distribution of radiation shall conform to the requireme

28、nts of EN ISO 4892-1 and EN ISO 4892-2, method A. The irradiance at the surface of the test specimens at wavelengths of between 290 nm and 800 nm shall be (550 75) W/m2(0,51 W/(m2nm) at 340 nm). 5.2 Black standard thermometer according to EN ISO 4892-1. 5.3 Climate chamber, for holding the artificia

29、l light source and the test specimens, capable of being maintained at a temperature of (40 10) C and a device to automatically wet the test specimens by water spray or immersion. 5.4 Concrete supports for the preparation of the test specimens in accordance with EN 13880-12 of dimensions as shown in

30、Figure 1. Two supports shall be used for each test specimen. BS EN 14187-8:2017EN 14187-8:2017 (E) 6 5.5 Spacers of dimensions 12 mm 12 mm 12,5 mm (see Figure 1) for the preparation of test specimens. 5.6 Anti-adherent substrate for the preparation of the test specimens. 5.7 Tensile testing machine

31、capable of extending the test specimens at a rate of (5,5 0,5) mm/min. 5.8 Distant pieces of appropriate dimensions to hold the test specimens extended to 25 % of the original width. 6 Preparation of test specimens Assemble two concrete supports (5.4) and two spacers (5.5) according to Figure 1 and

32、set up on the anti-adherent substrate (5.6). Follow the instructions of the sealant manufacturer, whether a primer is to be used. Condition the concrete supports (5.4), the spacers (5.5) and the sealant for at least 4 h at (23 2) C. The volume between concrete supports (5.4) and spacers (5.5) shall

33、be filled with the cold applied joint sealant. The following precautions shall be taken: avoid the formation of air bubbles; make sure that no sealant is running out at the bottom; trim the sealant surface so that it is flush with the faces of the support and spacers. For each test prepare three spe

34、cimens and also three reference specimens. BS EN 14187-8:2017EN 14187-8:2017 (E) 7 Dimensions in millimetres Key 1 concrete support 2 cold applied joint sealant 3 spacers Figure 1 Test specimen 7 Conditioning Condition the test specimens in accordance with either method A or method B of EN ISO 8340.

35、 If method B is used, after conditioning store the test specimens (2 0,5) h at (23 2) C and (50 5) % relative humidity before irradiation by UV-light. 8 Procedure Extend the 6 test specimens with the tensile testing machine (5.7) to 125 % of the original width at a rate of (5,5 0,5) mm/min. Maintain

36、 the extension during exposure to artificial light using the distant pieces (5.8). Expose three specimens in accordance with Table 1 to light from the artificial light source (5.1) in a climate chamber (5.3) at a black standard temperature of (65 2) C. Wet the specimens for 15-20 min by water sprayi

37、ng or immersion once every second hour. These exposure conditions corresponds to ISO 4892-2 method A cycle 1 or 2. The irradiance at the surface of the test specimens shall be (550 75) W/m2(UV and visual light). If nothing else specified, expose the specimens for 1 000 h. Three of the test specimens

38、 are kept during this time at (23 2) C and (50 5) % relative humidity. BS EN 14187-8:2017EN 14187-8:2017 (E) 8 Table 1 Test procedure Reference test specimens Test specimens Conditioning method EN ISO 8340: method A or B EN ISO 8340: method A or B Procedure (23 2) C (50 5) r.h. 25 % extension Artifi

39、cial light exposure 25 % extension Number of test specimens 3 3 Readings of the black standard temperature (5.2) shall only be taken after sufficient time when the temperature has stabilized. The temperatures shall be controlled by adjusting the air exchange rate or by cooling of the air. After UV-e

40、xposure take the test specimens from the climate chamber (5.3) and keep for 24 h at (23 2) C and (50 5) % relative humidity without extension. Then extend to 100 % or 140 % of the original width at a rate of (5,5 0,5) mm/min. Record a stress/strain diagram. In the same way test the reference test sp

41、ecimens after conditioning for 24 h at (23 2) C and (50 5) % relative humidity. 9 Expression of results Calculate the percentage of change of tensile stress at 100 % or 140% elongation, F100, for each test specimen using the following formula: = 101000100FFFF(1) where F100is the change of tensile st

42、ress, expressed in percent (%); F1is the mean value of tensile stress at 100 % or 140% extension of the test specimens after irradiation by UV-light, expressed in Megapascal (MPa); F0is the mean value of tensile stress at 100 % or 140% extension of the reference test specimens, expressed in Megapasc

43、al (MPa). BS EN 14187-8:2017EN 14187-8:2017 (E) 9 10 Test report The test report shall include the following information: a) reference to this European Standard; b) name and type of the cold applied joint sealant; c) batch of sealant from which the test specimens were produced; d) time of irradiatio

44、n and total irradiance at the surface of the test specimens; e) temperature and relative humidity during UV-irradiation; f) results expressed in the form stated in the relevant clauses; g) note of the appearance of the test specimen (i.e. cracking, softening, discoloration, delamination); h) any dev

45、iations from the specified test conditions; i) test results; j) date of test. This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated

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