EN ISO 16276-1-2007 en Corrosion protection of steel structures by protective paint systems - Assessment of and acceptance criteria for the adhesion cohesion (fracture strength) of.pdf

1、BRITISH STANDARDBS EN ISO 16276-1:2007Corrosion protection of steel structures by protective paint systems Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating Part 1: Pull-off testingThe European Standard EN ISO 16276-1:2007 has the status of a British

2、StandardICS 87.020g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 16276-1:2007This British Standard was published under the authority of t

3、he Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 55271 7National forewordThis British Standard was published by BSI. It is the UK implementation of EN ISO 16276-1:2007. The UK participation in its preparation was entrusted to Technical Committee STI/27, Paint systems

4、 for 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 correct application.Compliance with a British Standard can

5、not confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 16276-1May 2007ICS 87.020English VersionCorrosion protection of steel structures by protective paintsystems - Assessment of, and acceptance criter

6、ia for, theadhesion/cohesion (fracture strength) of a coating - Part 1: Pull-off testing (ISO 16276-1:2007)Anticorrosion des structures en acier par systmes depeinture - valuation et critres dacceptation deladhsion/cohsion (rsistance la rupture) dunrevtement - Partie 1: Essai de traction (ISO 16276-

7、1:2007)Beschichtungsstoffe - Korrosionsschutz von Stahlbautendurch Beschichtungssysteme - Beurteilung derAdhsion/Kohsion (Haftfestigkeit) einer Beschichtung undKriterien fr deren Annahme - Teil 1: Abreiversuch (ISO16276-1:2007)This European Standard was approved by CEN on 14 May 2007.CEN members are

8、 bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the

9、 CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same sta

10、tus as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, S

11、lovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide

12、 for CEN national Members.Ref. No. EN ISO 16276-1:2007: EForeword This document (EN ISO 16276-1:2007) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes“, the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 35 “Paints and varnishes“. This

13、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 November 2007, and conflicting national standards shall be withdrawn at the latest by November 2007. According to the CEN/CENELEC Internal Regulations, t

14、he national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, N

15、orway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN ISO 16276-1:2007Reference numberISO 16276-1:2007(E)INTERNATIONAL STANDARD ISO16276-1First edition2007-05-15Corrosion protection of steel structures by protective paint systems Assessment of, and a

16、cceptance criteria for, the adhesion/cohesion (fracture strength) of a coating Part 1: Pull-off testing Anticorrosion des structures en acier par systmes de peinture valuation et critres dacceptation de ladhsion/cohsion (rsistance la rupture) dun revtement Partie 1: Essai de traction EN ISO 16276-1:

17、2007ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Principle. 2 5 Apparatus and materials 3 6 Procedure 3 6.1 General. 3 6.2 Field tests on coated structures . 4 6.3 Preparation 4 6.4 Testing . 5 6.5 Interpretation of results 6 7 Ex

18、pression of results . 7 8 Acceptance criteria. 8 9 Test report . 8 Bibliography . 9 EN ISO 16276-1:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is nor

19、mally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee 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

20、the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 prepar

21、e International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies 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 som

22、e of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16276-1 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in collaboration

23、 with Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 14, Protective paint systems for steel structures. ISO 16276 consists of the following parts, under the general title Corrosion protection of steel structures by protective paint systems Assessment of, and acceptance criteria

24、 for, the adhesion/cohesion (fracture strength) of a coating: Part 1: Pull-off testing Part 2: Cross-cut testing and X-cut testing EN ISO 16276-1:2007vIntroduction The main purpose of this part of ISO 16276 is to supplement the ISO 12944 series with regard to the field assessment of, and acceptance

25、criteria for, the adhesion/cohesion of a coating. To comply with this part of ISO 16276, laboratory testing of panels might be required. This part of ISO 16276 introduces the term “fracture strength” which includes both adhesion and cohesion. Adhesion and cohesion are defined in ISO 4618, whereas th

26、e ISO 12944 series uses the term “adhesion” only. NOTE This part of ISO 16276 is intended for the assessment of pull-off testing of paint coatings on steel structures on site. ISO 4624 specifies a pull-off test for laboratory use, without instructions for interpretation of the results and without ac

27、ceptance or rejection criteria. Fracture strength testing is normally destructive and therefore requires repair work, the extent of which will depend on the specification and on the durability required of the protective paint coating. An objective of this part of ISO 16276 is to provide uniformity i

28、n the assessment of the fracture strength of a coating and to establish acceptance/rejection criteria for protective paint coatings. The method uses test equipment based on the pull-off principle. Protective paint systems which have poor adhesion/cohesion will normally fail at fracture strength valu

29、es significantly lower than the values quoted in the specification. For a protective paint system with a particular fracture strength, a range of test values will be obtained from different types of equipment. Specifying test equipment that gives, for a particular fracture strength, the highest test

30、 values does not necessarily indicate a higher durability for that protective paint system. Also, high test values for a particular fracture strength do not necessarily indicate a high durability for that protective paint system. EN ISO 16276-1:2007blank1Corrosion protection of steel structures by p

31、rotective paint systems Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating Part 1: Pull-off testing 1 Scope This part of ISO 16276 specifies procedures for assessing the fracture strength of a protective paint coating of any thickness on a steel substr

32、ate of thickness not less than 10 mm. The procedures given in this part of ISO 16276 are based on methods used with different types of pull-off test equipment. The results obtained using such different types of equipment are not comparable. NOTE 1 Substrates of less than 10 mm in thickness can be te

33、sted if they are strengthened by the sandwich technique (see ISO 4624) or by the nature of the structure (e.g. I-beam or backing-plate). Otherwise, test panels with a thickness of at least 10 mm coated in the same way as the structure can be used, or the method specified ISO 16276-2 can be used. Thi

34、s part of ISO 16276 is only applicable if a fracture strength value is specified, together with the type of test equipment and the manufacturer of the equipment. Usually, this information is included in contract documentation. NOTE 2 A value for the fracture strength is only meaningful if the requir

35、ements concerning the ambient conditions (see 6.4.2) are met. This part of ISO 16276 also specifies suitable equipment and defines inspection areas, sampling plans and acceptance/rejection criteria. It does not give any values of the fracture strength of different protective paint coatings. 2 Normat

36、ive 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 latest edition of the referenced document (including any amendments) applies. ISO 4624, Paints and varnishes Pul

37、l-off test for adhesion ISO 12944-7, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 7: Execution and supervision of paint work ISO 12944-8, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 8: Development of

38、 specifications for new work and maintenance ISO 19840, Paints and varnishes Corrosion protection of steel structures by protective paint systems Measurement of, and acceptance criteria for, the thickness of dry films on rough surfaces EN ISO 16276-1:20072 3 Terms and definitions For the purposes of

39、 this document, the following terms and definitions apply. 3.1 fracture strength force required to exceed the attachment forces between coats or between coat and substrate (adhesion) and/or within a coat (cohesion) 3.2 adhesion phenomenon of attachment at the interface between a solid surface and an

40、other material caused by molecular forces NOTE Adhesion should not be confused with cohesion. ISO 4618:2006 3.3 cohesion forces that bind a film into an integral entity NOTE Cohesion should not be confused with adhesion. ISO 4618:2006 3.4 coat continuous layer of a coating material resulting from a

41、single application ISO 4618:2006 3.5 coating continuous layer formed from a single or multiple application of a coating material to a substrate ISO 4618:2006 3.6 inspection area designated area to which a sampling plan has been applied, which can be the whole structure or a selected section of the s

42、tructure 4 Principle Test cylinders (dollies) are fixed to the coating using a suitable adhesive and a force is exerted in order to cause a fracture. This force is measured by the equipment. EN ISO 16276-1:200735 Apparatus and materials 5.1 Tensile/pull-off test apparatus, meeting the requirements s

43、pecified in 6.1.6. The manufacturer and the model of the apparatus shall be as specified or as agreed between the interested parties. 5.2 Test cylinders (dollies), made of stainless steel or aluminium alloy, of suitable diameter (normally 20 mm), of sufficient thickness to ensure freedom from distor

44、tion during the test and suitable for use with the test apparatus. It is recommended that the length of the test cylinder be not less than half its diameter. The end faces shall be machined perpendicular to the long axis of the cylinder. 5.3 Adhesives, suitable for use with both the test cylinder an

45、d the protective paint system, e.g. 2-pack epoxy or 1-pack cyanoacrylate (see ISO 4624). Care shall be taken to avoid adhesives which might damage, or penetrate through, the coating. 5.4 Circular cutting device, the internal diameter of which shall not exceed the diameter of the test cylinder by mor

46、e than 2 mm. 6 Procedure 6.1 General 6.1.1 As pull-off tests are destructive test methods, repair work will be necessary when they are used on coated structures. NOTE To avoid damage to the coated structure, test panels can be used (see 6.4.2). 6.1.2 The results of each of the procedures described a

47、re influenced by different aspects of the test conditions. There are some aspects that are common to all the procedures, and these are described below. 6.1.3 The test cylinders are supplied in various shapes and the force can be applied in various ways, such as hydraulic pressure, pneumatic pressure

48、 or using compressed-spring assemblies. 6.1.4 The measurement equipment used shall be calibrated. If a calibration certificate is required, it shall be checked to ensure that it is current and relates to the instrument in use, i.e. has the same serial number. NOTE Adjustment and calibration are carr

49、ied out by the manufacturer or by an authorized organisation. 6.1.5 Prior to testing, a recently applied coating shall be dried/cured in accordance with the manufacturers recommendations. In the absence of manufacturers recommendations, the coating shall be dried/cured for at least 10 days in well-ventilated conditions and at a substrate temperature in excess of 15 C and a relative humidity of less than 80 % prior to testing. NOTE 1 The age of the coating can affect the result of the test. Freshly applied co