BS EN 16492-2014 Paints and varnishes Evaluation of the surface disfigurement caused by fungi and algae on coatings《涂料和清漆 涂层真菌和藻类引起的表面缺陷评估》.pdf

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1、BSI Standards PublicationBS EN 16492:2014Paints and varnishes Evaluation of the surfacedisfigurement caused by fungiand algae on coatingsBS EN 16492:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16492:2014. The UK participation in its preparation was entr

2、usted to TechnicalCommittee STI/28, Paint systems for non-metallic substrates. A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its corr

3、ect application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 80221 8ICS 87.040Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy

4、 Committee on 30 June 2014.Amendments/corrigenda issued since publicationDate Text affectedBS EN 16492:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16492 June 2014 ICS 87.040 English Version Paints and varnishes - Evaluation of the surface disfigurement caused by fungi and algae on coati

5、ngs Peintures et vernis - valuation de laltration daspect de la surface des revtements provoque par les champignons etles algues Beschichtungsstoffe - Bewertung von optischen Oberflchenvernderungen versursacht durch Pilze und Algen auf Beschichtungen This European Standard was approved by CEN on 30

6、April 2014. 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 concerning such national standards may be o

7、btained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists 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

8、 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irel

9、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Cen

10、tre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16492:2014 EBS EN 16492:2014EN 16492:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle 4 4 Apparatus .4 5

11、Preparation .4 6 Procedure .4 7 Expression of results 5 8 Test report 5 Annex A (normative) Assessment according to EN ISO 4628-1 6 A.1 Designation of intensity of disfigurements according to EN ISO 4628-1:2003, 3.4 6 A.2 Designation of the quantity of disfigurements according to EN ISO 4628-1:2003,

12、 3.2 6 A.3 Designation of the percentage area of disfigurements .6 Bibliography 7 BS EN 16492:2014EN 16492:2014 (E) 3 Foreword This document (EN 16492:2014) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This European Standard sha

13、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2014, and conflicting national standards shall be withdrawn at the latest by December 2014. Attention is drawn to the possibility that some of the elements of this d

14、ocument may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standar

15、d: 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, Slovakia, Slovenia, Spain

16、, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16492:2014EN 16492:2014 (E) 4 1 Scope This European Standard specifies a procedure for the evaluation of the degree of surface disfigurement caused by fungi and algae on coatings. This European Standard is not applicable for evaluating disf

17、igurements caused by blue stain in service on and in wood surfaces. A scale for the assessment of blue stain of coated and uncoated wood is specified in EN 152:2011, 8.5.2. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indisp

18、ensable 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 ISO 4628-1:2003, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size

19、 of defects, and of intensity of uniform changes in appearance Part 1: General introduction and designation system (ISO 4628-1:2003) 3 Principle The degree of fungal or algal growth on coatings is given a numeric rating. 4 Apparatus 4.1 Microscope with a typical magnification of up to 100 (if necess

20、ary) 5 Preparation The test specimen shall be the flat surface of any exposed test panel or cut from a construction panel. In the case of assessment of building facades one or more defined parts of the surface shall be chosen and described in the test report. The test specimen shall be examined with

21、out wiping, washing or removing any loose surface material. For better discrimination between fungi and algae the test surface shall be examined under wet conditions. Dry surfaces shall be wetted by gently spraying with clean water. Care shall be taken not to add any contamination to the specimen su

22、rface. 6 Procedure Carry out the assessment visually using normal or corrected vision on a defined test surface. Carry out the assessment under good illumination and from a distance less than 1 m. If contamination of dirt soil is suspected, this shall be confirmed by the use of a microscope (4.1) an

23、d taken into consideration when evaluating the entire surface. Distinguishing dirt from biological disfigurement might be difficult even with the aid of a microscope. To improve precision, the evaluation should be carried out by an experienced operator. Any fungal or algal growth observed only on di

24、rt or soil particles that have accumulated on the test specimen shall be reported separately in the test report. BS EN 16492:2014EN 16492:2014 (E) 5 7 Expression of results The numerical ratings for the intensity (in accordance with Table A.1), the quantity (in accordance with Table A.2) and the per

25、centage area (in accordance with Table A.3) of disfigurements caused by fungal or algal growth shall be expressed as indicated in the following examples: fungal growth: intensity 1, quantity 3, percentage area 2 algal growth: intensity 2, quantity 1, percentage area 1 8 Test report The test report s

26、hall contain at least the following information: a) all details necessary to identify the product tested; b) reference to this European Standard (EN 16492:2014); c) type and origin of the test specimen and its exposure conditions, including whether the inspection is carried out in a laboratory or on

27、-site; d) statement whether the growth observed is either fungal or algal; e) numerical contamination rating in accordance with Clause 7; f) any presence of dirt/soiling; g) if any growth is observed on dirt or soil only, including an information whether any magnification to inspect the surface was

28、carried out; h) any deviation from the test procedure described; i) any unusual features (anomalies) observed during the evaluation; j) date(s) of the test. BS EN 16492:2014EN 16492:2014 (E) 6 Annex A (normative) Assessment according to EN ISO 4628-1 A.1 Designation of intensity of disfigurements ac

29、cording to EN ISO 4628-1:2003, 3.4 The intensity of changes in the appearance of the coating (e.g. colour changes) caused by fungal or algal growth shall be expressed using Table A.1: Table A.1 Rating scheme for designating the intensity of visible growth Rating Intensity of visible growth 0 1 2 3 4

30、 5 unchanged, i.e. no visible growth very slight, i.e. just visible growth slight, i.e. clearly visible growth moderate, i.e. very clearly visible growth considerable, i.e. pronounced visible growth very marked visible growth A.2 Designation of the quantity of disfigurements according to EN ISO 4628

31、-1:2003, 3.2 The quantity (number) of disfigurements caused by fungal or algal growth shall be expressed using Table A.2: Table A.2 Rating scheme for designating the quantity of disfigurements Rating Quantity of disfigurements 0 1 2 3 4 5 none, i.e. no detectable disfigurements very few, i.e. small,

32、 barely significant number of disfigurements few, i.e. small but significant number of disfigurements moderate number of disfigurements considerable number of disfigurements dense pattern of disfigurements / homogeneous disfigurement A.3 Designation of the percentage area of disfigurements The perce

33、ntage area of disfigurements caused by fungal or algal growth shall be expressed using Table A.3: Table A.3 Rating scheme for designating the percentage area of disfigurements Rating Percentage area of disfigurements 0 1 2 3 4 no growth on the surface of the specimen up to 10 % growth on the surface

34、 of the specimen more than 10 % up to 30 % growth on the surface of the specimen more than 30 % up to 50 % growth on the surface of the specimen more than 50 % up to 100 % growth on the surface of the specimen BS EN 16492:2014EN 16492:2014 (E) 7 Bibliography EN 152:2011, Wood preservatives - Determi

35、nation of the protective effectiveness of a preservative treatment against blue stain in wood in service - Laboratory method EN 15457, Paints and varnishes - Laboratory method for testing the efficacy of film preservatives in a coating against fungi EN 15458, Paints and varnishes - Laboratory method

36、 for testing the efficacy of film preservatives in a coating against algae 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 by

37、Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, industry, government, consumers, innovators and others to sha

38、pe their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them ac

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