1、Designation: D713 12Standard Practice forConducting Road Service Tests on Fluid Traffic MarkingMaterials1This standard is issued under the fixed designation D713; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. A number in 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 determination of the relativeservice life of fluid traffic marking materials such as paint,thermoplas
3、tic, epoxy, and polyester products under actual roadconditions using transverse test lines. Materials under test areapplied under prescribed conditions and periodic observationsare made using prescribed performance criteria.1.2 The values stated in SI units are to be regarded as thestandard. The val
4、ues 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 re
5、gulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D711 Test Method for No-Pick-Up Time of Traffic PaintD913 Practice for Evaluating Degree of Traffic Paint LineWearD6628 Specification for Color of Pavement Marking Mate-rialsE1710 Test Method for Measurement of Retroreflect
6、ivePavement Marking Materials with CEN-Prescribed Ge-ometry Using a Portable RetroreflectometerE2367 Test Method for Measurement of Nighttime Chroma-ticity of Pavement Marking Materials Using a PortableRetroreflection Colorimeter3. Significance and Use3.1 This practice is an accelerated evaluation o
7、f beadretention, retroreflectivity, daytime color, night time color, andwear characteristics of fluid traffic marking materials. It is usedto determine the useful life of such markings in the field. Thesame procedures are applicable to evaluating longitudinal linesto determine service life.4. Type a
8、nd Location of Pavement for Tests4.1 Select sections where traffic is moderate and free-rollingwith no grades, curves, intersections, or access points nearenough to cause excessive braking or turning movements,where wear is uniform with full exposure to the sun throughoutdaylight hours, and there is
9、 good drainage. Select surfaces thatare representative of the pavements upon which the fluid trafficmarking material will be used in practice. Such surfacesinclude portland cement concrete, sheet asphalt, bituminousconcrete, rock asphalt, and bituminous surface treatment.5. Conditions at Time of App
10、lication5.1 Clean the test area thoroughly of all foreign material.Follow the pavement marking manufacturers recommendationfor the application of the pavement marking to be tested. Thisshould include the recommendations for air and pavementtemperature, material temperature, relative humidity, windch
11、ill, and wind speed. Application between 10 a.m. and 3 p.m.is recommended. During application record air and pavementtemperature, wind speed, and relative humidity hourly.6. Measurement of Wet Film Thickness6.1 To aid in obtaining the correct film thickness, a length ofroofing paper placed by the si
12、de of the road can be used. Placea rigid metal test panel on the roofing paper and in the path ofthe test line. A 300 by 300-mm (12 by 12-in.) metal panel 1.5mm (116 in.) in thickness is satisfactory. Immediately after thetest line is applied by the motorized striper, read the wet filmthickness. If
13、the wet film thickness is not satisfactory, adjust thespray pressure and repeat until the target wet film thickness isattained. It is important that no glass beads or other interferingmaterials be present that would give a false wet film reading.When the wet film thickness is correct, apply a test l
14、ine acrossa tared metal panel and weigh immediately. A balance must beimmediately available and be thoroughly shielded from windas well as be of 1500-g capacity with 0.1 g or better sensitivity.As a basis for determination of glass bead application (7.1) the1This practice is under the jurisdiction o
15、f ASTM Committee D01 on Paint andRelated Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edition approved Dec. 15, 2012. Published March 2013. Originallyapproved in 1943. Last previous edition approved in 2010 as D713 90 (2010)
16、.DOI: 10.1520/D0713-12.2For 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
17、 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1weight of a paint line 100 by 300 mm (4 by 12 in.) (withoutconsideration for solvent loss) can be calculated as follows:W 5 0.0943 3 t 3 gwhere:W = weight of paint line, g,t = mil thickness, andg = weight per gallon, lb.6.2
18、Application of pavement markings by the spray processshall be by an appropriate spray applicator with traction driveand a spray nozzle similar to that used on normal markingequipment. The machine must be capable of setting andmaintaining a constant speed during the application process.Standard traff
19、ic paint shall be applied at a thickness of 15 mil(+ 1 mil).6.2.1 Application of other materials shall be accordancewith the manufacturers recommended procedures and assimilar as possible to that used on their normal markingequipment. High build water bourne paints, epoxies, modifiedepoxies, polyure
20、a, Methacrylate, and other exotic materialstested shall be applied at the rate recommended by themanufacturer with a 15 mil minimum. The minimum thicknessfor thermoplastic material tested shall be 30 mil. If thepavement markings are applied by some other method thanspray, such as extrusion, it must
21、be done with a piece ofequipment that will provide consistent material thicknessthroughout the test marking and be able to meet the manufac-turers requirements for the application of the pavementmarking.6.3 Test line for traffic paint and thermoplastic applied atless than 60 mil in thickness shall b
22、e 4 612 in. in width.Thermoplastic applied at more than 60 mil shall be 6 612 in.in width. For any other materials the applied width shall beaccording to the manufacturers recommendation.6.4 If the material is sprayable and can be applied withtraction drive and a spray nozzle similar to that used on
23、 normalmarking equipment, thickness shall be checked by weight. Formaterials applied by any other means the thickness shall bechecked by instrument. Thickness will be determined by use ofa test panel and a micrometer or magnetic dry film thicknessgauge.7. Measurement of Glass Beads7.1 After the comp
24、letion of 6.1, apply another test line to atared panel with the motorized striper, this time also adding theglass beads, and weigh immediately. The weight differencebetween this measurement and that in 6.1 gives the amount ofglass beads on the panel. Prior to weighing the panel, removeexcess glass b
25、eads which are not adhered to the pavementmarking from the panel to ensure an accurate representation ofthe bead rate. The process can be repeated if an adjustment inthe bead application rate is needed. The weight of applied glassbeads per gallon of pavement marking material can be calcu-lated as fo
26、llows:W 5 1.418 3 B 3 T15!where:W = weight of glass beads, g,B = glass beads per gallon of paint, lb., andT = thickness of paint being applied, mil.7.1.1 To calculate the bead rate in terms of weight per unitarea use the following calculation:Bead Rate lbs100 ft2! 5 WA! * 100where:W = weight of glas
27、s beads, lb andA = area of pavement marking, ft2.7.2 Unless a manufacturer has requested to use a specialcoated bead, glass beads meeting requirements of AASHTOM247 for Type I Beads (identified at the time of application)will be applied to the pavement markings. The coating on thebeads shall be spec
28、ified by the purchaser and shall be noted aspart of the test report. For standard traffic paint applied at 15wet mil the glass beads shall be applied at a rate of 6 poundsper gallon (6 lbs/100 ft2) and will be supplied by the testingagency. The testing agency will provide quality control testresults
29、 for the beads provided.7.3 Use of special beads or other retroreflective optics maybe applied at the manufacturers recommended application rateand method. If this is to be done the manufacturer shall providethe recommended application methodology, and applicationrate in the form of weight per unit
30、area (such as lb/100 ft2) foreach bead or retroreflective optic that is to be used. Themanufacturer shall also provide the technical information forthe material being used to include such things as materialdescription, pertinent specifications met, physical propertiessuch as size, roundness, chemica
31、l properties, and coatingcharacteristics. This information shall be available as part ofthe report.7.4 If the bead or reflective optic application can be con-trolled then the actual bead application rate shall be determinedand included as part of the report. If the rate cannot beconsistently control
32、led then the beads or reflective opticsshould be applied in such a manner to fully saturate (flood) themarking and this should be reflected in the report.8. Application Procedure8.1 Apply the test stripes at the required width and trans-versely on the road. At the option of the purchaser, the testst
33、ripes may be applied to the pavement at an angle of 45 to thedirection of the traffic, or longitudinally in each wheel path, inorder to increase the area of contact with traffic. If the markingsare to be applied in a longitudinal pattern then the patternshould be discussed and agreed to prior to con
34、ducting the fieldtest.8.2 Apply test stripes (trained personnel under the supervi-sion of the purchaser) by using a pavement-marking machinesimilar to the production pavement marking equipment. Applythe test stripes to at least two sections of each road surfaceselected to ensure against undetected r
35、oad surface problems.When more than one specimen is tested at more than onelocation, change the sequence of placement to minimize theeffect of time of day and time period before the test deck isopened to traffic.D713 1228.3 Apply at least two lines of each specimen in eachsection for better statisti
36、cal reliability. A tared panel as used inthe measurement of glass beads (see 7.1) should be placedbetween the wheel track of one lines application as a doublecheck for material and glass bead application rates. Weightsbetween this reading and that found in 7.1 should agree within0.5 g. The purchaser
37、 may wish to place another smaller panelbetween the wheel tracks to retain for future reference. Thethickness of samples shall be checked within the first three footsection of the test lines.8.4 For standard traffic paint the road surface test linesshould have a wet film thickness within 61.0 mil of
38、 thatrequired by the purchaser.NOTE 1If no wet film thickness is specified, 15.0 mil is recom-mended.8.5 High build waterborne paints, epoxies, modifiedepoxies, polyurea, Methacrylate, and other exotic materialstested shall be applied at the rate recommended by themanufacturer with a 15 mil minimum.
39、 The minimum milthickness for thermoplastic material tested shall be 30 mil. Ifthe pavement markings are applied by some other method thanspray, such as extrusion, it must be done with a piece ofequipment that will provide consistent material thicknessthroughout the test marking and be able to meet
40、the manufac-turers requirements for the application of the pavementmarking.8.6 A fluid marking material with which the purchaser hashad considerable production experience is recommended to beadded to the test series as a control to gauge the relativeperformance for materials applied under the road s
41、ervice testconditions for a particular test series.8.7 For standard traffic paint that utilizes the standard glassbeads (AASHTO Type 1) for drop on application, the glassbeads are placed in the paint film within 60.5 lb/gal of thatrequired by the purchaser. The standard glass beads aresupplied by th
42、e purchaser.NOTE 2If no bead application rate is specified, 6.0 lb/gal (6 lb/100 ft2)of paint that is applied at 15 mil is recommended.8.8 If special beads or other retroreflective optics are usedper the manufacturers recommendations the application shallbe made according to the manufacturers recomm
43、ended appli-cation methodology, and application rate for each bead orretroreflective optic that is to be used. The application rate shallbe of each type of bead or other retroreflective optic shall beincluded in the report.9. Performance Criteria9.1 Unless otherwise stated all evaluations shall be p
44、er-formed in one or both of the following areas; the center of theleft wheel path and in the skip line area. The evaluations willbe made at the eighteen (18) in. length of line centered on theleft wheel track area (wheel track) and nine (9) in. from theskip line area (centerline). The centerline can
45、 further be locatedas the area to the left of the left wheel path in the last nine (9)in. of the line.9.2 Auto-No-Track TimeThe auto no-track time is deter-mined by passing over the freshly applied line in a simulatedpassing maneuver with a standard size passenger car withregular treads (no snow tre
46、ads). A line showing no visualpick-up and redeposition of the materials onto the pavementsurface when viewed from a distance of 15 m (50 ft) in thehighway direction is considered as showing no pick-up andconforming to the drying time requirements.9.2.1 The test line is applied at the same temperatur
47、e, thesame wet film thickness, and the same rate of glass beads aswill be specified by the purchaser in production application.9.2.2 The no-track maximum time is measured when thepavement temperature is from 15 to 50C (60 to 120F) andunder local humidity conditions, providing that the pavement isdry
48、.9.3 AppearanceThe impression of the observer of thegeneral condition of the test lines when viewed without anydetailed inspection, from a distance of at least 10 ft. It is ameasure of satisfactory or unsatisfactory appeal to the ob-server. It includes a comparison of the color of the surfaceunder c
49、onsideration with the original color, taking into accountchanges due to yellowing, bleeding, darkening, fading, dirtcollection, mold growth, etc. This determination is made inboth the left wheel path and in the skip line area as defined in9.1. The appearance is rated either acceptable or unacceptable.9.4 DurabilityThe durability is equal to one tenth of thepercentages of material remaining on the pavement (whenexamined by the unaided eye). This determination is made inboth the left wheel path and in the skip line area as defined in9.1. The percent of paveme
