1、Designation:D 969 85(Reapproved 2003)Standard Test Method forLaboratory Determination of Degree of Bleeding of TrafficPaint1This standard is issued under the fixed designation D 969;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、 year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers a laboratory test procedure fordetermining the degree of bleeding of traffic or pavementm
3、arking paints.1.2 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.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 standar
4、d 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:2D 476 Classification for Dry Pigmentary Titanium DioxideProductsD 867 Specification for Pumice Pigment3D 868 Test Method for Evalu
5、ating Degree of Bleeding ofTraffic PaintD 1199 Specification for Calcium Carbonate Pigments2.2 ASTM Adjuncts:D 868 Bleeding resistance of paint(one photo)43.Significance and Use3.1 Solvents in a traffic paint may cause bleeding ofpavement constituents into the traffic marking,thereby render-ing the
6、traffic marking less effective as a lane or directionalindicator.This test method describes how to prepare a panel forevaluation.The very subjective method of evaluating thedegree of bleeding raises questions as to the usefulness of theresult for specification compliance.4.Apparatus4.1 Film Applicat
7、orA conventional type drawdown gagethat casts a film having a minimum width of 50 mm(2 in.)andan approximate wet thickness of 380 m(15 mils)(applicatorclearance of approximately 760 m(30 mils).4.2 Test Panel for Coal-Tar SubstrateA 127 by 254-mm(5 by 10-in.)piece cut from a standard roll of so-calle
8、d“6.8-kg(15-lb)coal-tar saturated asbestos or rag felt”(see Note 1).4.3 Test Panel for Asphalt SubstrateA 127 by 254-mm(5by 10-in.)piece cut from a standard roll of 6.8-kg(15-lb)asphalt-saturated felt.NOTE1The following paint composition,when used on 6.8-kg(15-lb)felts from various sources,gave the
9、severe bleeding necessary fora rating of between 4 and 2 on the coal tar,and the lesser bleedingnecessary for a rating between 9 and 7 on asphalt,when compared to thephotographic reference standards of Test Method D 868.4This controlpaint is suggested only for use in standardizing the test panels.Po
10、unds(kg)AGallons(L)BTitanium dioxide TiO2/(Classification D 476,Type II,Class II)219.36.25Calcium carbonate/CaCO3/ASTM Specifi-cation D 1199525.723.29Aluminum stearate(a 5%mixture in toluolshall gel below 120F)2.10.23Pumice,No.100(Specification D 867)87.84.48Alkyd resin solution,pure oxidizing 52%so
11、yaoil modified,50%solution in 38 K.B.mineralspirits425.755.98V.M.&P.naphtha53.98.78Lead naphthenate,24%5.70.59Cobalt naphthenate,6%1.30.16Chemical ASA(anti-skin agent)1.80.24Totals1323.3100.00A1 lb=0.454 kg.B1 gal=3.7854 L.5.Preparation of Test Panel5.1 Cut the 125 by 255-mm(5 by 10-in.)specimen pan
12、elfrom that portion of the roll 5 in.in from the edges.5.2 Provide a nonbleeding contrast surface by affixing a20-mm(34-in.)cellophane tape,with firm pressure,to the1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the di
13、rect responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edition approved Dec.1,2003.Published December 2003.Originallyapproved in 1948.Last previous edition approved in 1985 as D 969 85(1998).2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Ser
14、vice at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Withdrawn.4Copies of the pictorial photographic reference standards are contained in thepublication Pictorial Standards of Coating Defects,and may be obtained
15、fromASTM International Headquarters(request Adjunct PCN 12-408680-00)or theFederation of Societies for Coating Technology,492 Norristown Rd.,Blue Bell,PA19422.The original source of the photographic reference standards illustrated inFig.1 is the Federation.1Copyright ASTM International,100 Barr Harb
16、or Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.entire length of the panel so that the outside edge of the tape isat least 25 mm(1 in.)from the edge of the panel and parallelto the edge of the panel.6.Procedure6.1 Place the test panel on a smooth flat surface(such as aglass panel),with the tape side up on the left,and hold in a flatposition by weighting down the edges.6.2 Draw the paint under test down over the specimen panelin such a manner that the entire width of the tape i
