1、Designation:D71120Standard Test Method forNo-Pick-Up Time of Traffic Paint1This standard is issued under the fixed designation D711;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 parentheses ind
2、icates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers a laboratory procedure fordetermining the no-pick-up ti
3、me of a traffic paint.The methoduses a wheel consisting of a metal cylinder with rubberO-rings.The wheel is rolled down a ramp over a freshlyapplied traffic paint film repeatedly until there is no transfer ofpaint to the rubber rings.The elapsed time from paint filmapplication to point of no paint t
4、ransfer is the no-pick-up time.Key variables to be controlled during testing are film thickness,temperature,humidity,and air flow.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to address
5、all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in a
6、ccor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM
7、 Standards:2D823 Practices for Producing Films of Uniform Thicknessof Paint,Coatings and Related Products on Test PanelsD1212 Test Methods for Measurement of Wet Film Thick-ness of Organic CoatingsD1414 Test Methods for Rubber O-RingsD2000 Classification System for Rubber Products in Auto-motive App
8、licationsD4414 Practice for Measurement of Wet Film Thickness byNotch GagesD5741 Practice for Characterizing Surface Wind Using aWind Vane and Rotating Anemometer3.Significance and Use3.1 This test method serves as a laboratory control test.Types of traffic paints that can be tested with this method
9、 arewaterborne,solventborne,and some 100%solids liquid trafficpaints.If wet film thickness,temperature,and humidity arecontrolled within the tolerances specified herein,this methodcan be useful for relative testing of traffic paints and potentiallyfor qualification of traffic paints for field applic
10、ation in ap-proved specifications.For improved repeatability and mean-ingful comparison of paint samples being tested,consistent airflow over the paint films during testing is important.Althougha no-air-flow(static)test environment is standard,the buyerand seller should agree upon the air flow condi
11、tions,whether itbe static or carefully regulated air flow(see 4.6.1 and 4.6.2).Because of the many variables operative in the field applicationof traffic paint(for example,film thickness,air temperature,humidity,wind speed,pavement type(asphalt or concrete),film profile over pavement,pavement temper
12、ature,pavementporosity,pavement moisture content,and the presence orabsence of direct sunlight during striping),a direct correlationbetween the results of this test and field applications is difficultto obtain.However,relative field performance can be predictedusing this method if the testing protoc
13、ol is adhered to.4.Apparatus4.1 The apparatus3as shown in Fig.1 shall consist of a steelcylinder of the shape and dimensions as indicated,fitted withtwo replaceable O-rings and a ramp of shape and dimensions asshown.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Relate
14、d Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edition approved June 1,2020.Published July 2020.Originally approvedin 1943.Last previous edition approved in 2015 as D711 10(2015).DOI:10.1520/D0711-20.2For referenced ASTM stand
15、ards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The sole source of supply of the apparatus known to the committee at this timethat meets th
16、e requirements is available from Paul N.Gardner Co.,Inc.,316 NE 1stSt.,Pompano Beach,FL 33060.If you are aware of alternative suppliers,pleaseprovide this information to ASTM International Headquarters.Your comments willreceive careful consideration at a meeting of the responsible technical committee,1which you may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with interna
