ASTM_D_711_-_10_2015.pdf

Designation:D71110(Reapproved 2015)Standard 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 indicates 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 time 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 transfer 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 all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D823 Practices for Producing Films of Uniform Thicknessof Paint,Varnish,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 ApplicationsD4414 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 arewaterborne,solventborne,and some 100%solids liquid trafficpaints.This test is most commonly used with fast-dry water-borne traffic paints.If wet film thickness,temperature,andhumidity are controlled within the tolerances specified herein,this method can be useful for relative testing of traffic paintsand potentially for qualification of traffic paints for fieldapplication in approved specifications.For improved repeat-ability and meaningful comparison of paint samples beingtested,consistent air flow over the paint films during testing isimportant.Although a no-air-flow(static)test environment isstandard,the buyer and seller should agree upon the air flowconditions,whether it be static or carefully regulated air flow(see 4.6.1 and 4.6.2).No-pick-up times for fast-dry waterbornetraffic paints are typically less than 10 min in a static air flowcondition.Because of the many variables operative in the fieldapplication of traffic paint(for example,film thickness,airtemperature,humidity,wind speed,pavement type(asphalt orconcrete),film profile over pavement,pavement temperature,pavement porosity,pavement moisture content,and the pres-ence or absence of direct sunlight during striping),a directcorrelation between the results of this test and field applicationsis difficult to obtain.However,relative field performance canbe predicted using this method if the testing protocol is adheredto.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edition approved June 1,2015.Published June 2015.Originallyapproved in 1943.Last previous edition approved in 2010 as D711 10.DOI:10.1520/D0711-10R15.2For 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 standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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.4.2 The detailed dimensional requirements of the steelcylinder are given in Fig.1.The total weight of the assemblycomplete with O-rings shall be 5386 6 28 g(11 lb 14 oz 6 1oz).4.3 The detailed dimensional requirements of the ramp areshown in Fig.1 and a picture of the apparatus with paint filmbeing tested is shown in Fig.2.4.4 The replaceable O-rings shall be made of syntheticrubber or rubber-like material meeting the requirements of HK715 of Classification D2000.Standards for O-rings and rubberproducts are also found in Test Methods D1414 and Classifi-cation D2000.4.5 The dimensional requirements of the O-r