1、Designation: D913 10Standard Practice forEvaluating Degree of Traffic Paint Line Wear1This standard is issued under the fixed designation D913; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the evaluation of degree of resis-tance to wear that may occur with traffic paints (trafficmarkings) in road tests (see Prac
3、tice D713) or in actual service,using photographic standards for comparative evaluation.1.2 This standard does not purport to address all of thesafety problems, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices
4、 and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D713 Practice for Conducting Road Service Tests on FluidTraffic Marking Materials2.2 ASTM Adjuncts:Glossy Prints of Photographic Reference33. Terminology3.1 Definitions of Terms Specif
5、ic to This Standard:3.1.1 failure, described by these photographic references,nthat condition manifested in traffic paint by actual detach-ment of sections of the film from its substrate or erosion ofsections of paint down to the substrate.3.1.1.1 DiscussionThe degree of resistance to failure isjudg
6、ed by the amount of substrate that is covered.3.1.2 substrate, nthe roadway surface or previously ap-plied traffic marking over which the traffic paint being testedwas applied4. Significance and Use4.1 This practice is designed to evaluate the resistance towear of a traffic paint. It must be remembe
7、red that a highdegree of performance of paint applied to a bare road surfacemay not guarantee similar results when the same paint isapplied over old paint lines.5. Type of Failure5.1 The failure as described in Section 3 does not presumeany specific mechanism, and all areas where the substrate isvis
8、ible shall be considered a failure.6. Use of Photographic References6.1 The photographic references3that are part of thispractice are representative of the degrees of resistance to wearof stripes of traffic paint. The examples shown in Fig. 1 andFig. 2 are for illustration purposes only and should n
9、ot be usedfor evaluation.6.1.1 The degree of resistance to wear is likely to vary overany given area. It is therefore preferable to use one of thefollowing grading methods:6.1.1.1 Select an area as representative and base the relativeperformance of the stripe on this area or6.1.1.2 Grade segments of
10、 the stripe and average thesegradings.6.1.2 The photographic references (Note 1) represent fourdegrees (97 %, 92 %, 77 %, 60 %) of resistance to wear.Substrate revealed by failure is readily discernible with thenaked eye.NOTE 1The photographic references are representative of stripes oftraffic paint
11、s. The percentage of surface covered is shown on eachreference.7. Procedure7.1 Compare the representative areas of the traffic paintstripes with the photographic references and estimate thepercent of intact film.8. Report8.1 Report the mean and range of the substrate coverageestimations, if appropri
12、ate.9. Keywords9.1 resistance to wear; traffic paint1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edition approved July 1, 2010. Published Jul
13、y 2010. Originally approvedin 1947. Last previous edition approved in 2003 as as D913 031. DOI:10.1520/D0913-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the
14、standards Document Summary page onthe ASTM website.3Full-size (8 by 10-in. (203 by 254-mm) glossy prints of the photographicreference showing degrees of chipping are available from ASTM InternationalHeadquarters. Order Adjunct No: ADJD0913.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box
15、 C700, West Conshohocken, PA 19428-2959, United States.Photographic Reference Set A(Film 97 % Intact) (Film 92 % Intact)(Film 77 % Intact) (Film 60 % Intact)FIG. 1 Relative Percent of Substrate CoveredD913 102ASTM International takes no position respecting the validity of any patent rights asserted
16、in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the
17、responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive ca
18、reful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Internatio
19、nal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).Photographic Reference Set BFIG. 2 Relative Percent of Substrate CoveredD913 103
