ASTM_D_2823_-_90_1997e1.pdf

Designation:D 2823 90(Reapproved 1997)e1Standard Specification forAsphalt Roof Coatings1This standard is issued under the fixed designation D 2823;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(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.e1NOTEAdded Section 13 and deleted Footnote 7 editorially in April 1997.1.Scope1.1 This specification covers asphalt roof coatings of brush-ing or spraying consistency.1.2 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:D 4 Test Method for Bitumen Content2D 95 Test Method for Water in Petroleum Products andBituminous Materials by Distillation3D 140 Practice for Sampling Bituminous Materials4D 224 Specification for Smooth-Surfaced Asphalt RollRoofing(Organic Felt)2D 312 Specification for Asphalt Used in Roofing2D 449 Specification for Asphalt Used in Dampproofing andWaterproofing2D 562 Test Method for Consistency of Paints Using theStormer Viscometer5D 946 Specification for Penetration-Graded Asphalt Ce-ment for Use in Pavement Construction5D 1079 Terminology Relating to Roofing,Waterproofingand Bituminous Materials2E 1 Specification for ASTM Thermometers63.Terminology3.1 For definitions of terms used in this specification,seeTerminology D 1079.4.Classification4.1 Type I is made from asphalts characterized as self-healing,adhesive,and ductile,and conforming to the require-ments of Specification D 312,Type I;Specification D 449,Types I or II;or Specification D 946.4.2 Type II is made from asphalts characterized by highsoftening point and relatively low ductility,and conforming tothe requirements of Specification D 312 Types II or III;orSpecification D 449,Type III.5.Materials and Manufacture5.1 Asphalt roof coatings shall consist of an asphalt base,volatile petroleum solvents,and mineral stabilizers includingasbestos fiber,mixed to a smooth,uniform consistency suitablefor application by squeegee,three-knot brush,paint brush,roller,or by spraying.6.Composition6.1 Asphalt roof coatings complying with this specificationshall conform to the following composition limits:minmaxWater,%.1.0Nonvolatile matter,%50.Asbestos and other mineral stabilizers,%520Asphalt,%40.Mineral matter based on original mass of insolubleresidue,%80.7.Physical Requirements7.1 UniformityAfter a thoroughly stirred sample hasstood for 72 h at room temperature in a closed container,itshall show no separation of solvent or settling that cannot beovercome by moderate stirring.7.2 Consistency The roof coating shall be of a consis-tency that will spread readily and permit application bysqueegee,brush,roller,or spray at the rate of 50 ft2/gal(1.25m2/L)on prepared roofing,saturated felt,and metal surfaces atambient temperatures above 50F(10C).Consistency at 77F(25C)shall be between 50 and 400 Stormer s/100 revolutions.7.3 Behavior at 140F(60C)The roof coating shall showno evidence of blistering,and sag or slide shall be no greaterthan14in.(6 mm).Staining or absorption of the coating on thereverse side of the prepared roofing test panel shall not exceed1This specification is under the jurisdiction of ASTM Committee D-8 onRoofing,Waterproofing,and Bituminous Materials and is the direct reponsibility ofSubcommittee D08.05 on Solvent-Bearing Bituminous Compounds for Roofing andWaterproofing.Current edition approved June 29,1990.Published August 1990.Originallypublished as D 2823 69.Last previous edition D 2823 75(1981).2Annual Book of ASTM Standards,Vol 04.04.3Annual Book of ASTM Standards,Vol 05.01.4Annual Book of ASTM Standards,Vol 04.03.5Annual Book of ASTM Standards,Vol 06.01.6Annual Book of ASTM Standards,Vol 14.03.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.5%of the coated area.7.4 Pliability at 32F(0C)There shall be no cracking orseparation of the roof coating from the metal.8.Sampling8.1 Sample the material from the original containers imme-diately after stirring to a uniform consistency in accordancewith Practice D 140.Restir samples to ensure uniformityimmediately before withdrawing portions for individual tests.9.Test Methods9.1 WaterTest Method D 95.9.2 Nonvolatile MatterWeigh 10 6 1 g of coating to thenearest 0.01 g into each of two tared,flat-bottom dishes havinga diameter of approximately 2.5 in.(64 mm)and walls58in.(16 mm)high.Heat the dish and contents in an oven at 320 to330F(160 to 166C)until the residue shows a loss of notmore than 0.05 g on successively hourly weighings;make eachweighing after cooling in a desiccato