ASTM D4479 D4479M-2007(2018) Standard Specification for Asphalt Roof Coatings&x2014 Asbestos-Free.pdf
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1、Designation: D4479/D4479M 07 (Reapproved 2018)Standard Specification forAsphalt Roof CoatingsAsbestos-Free1This standard is issued under the fixed designation D4479/D4479M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year o
2、f last revision. A number in parentheses indicates the year of lastreapproval. A superscript 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 specification covers asbe
3、stos-free asphalt roof coat-ings of brushing or spraying consistency.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Co
4、mbiningvalues from the two systems may result in non-conformancewith the standard.1.3 The following precautionary caveat pertains only to thetest method portion, Section 8, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It
5、is the responsibility of the userof this standard to establish appropriate safety, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on stand
6、ard-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 Standards:2D312/D312M Specification for Asphalt Used in R
7、oofingD449/D449M Specification forAsphalt Used in Dampproof-ing and WaterproofingD946/D946M Specification for Penetration-Graded AsphaltBinder for Use in Pavement ConstructionD6511/D6511M Test Methods for Solvent Bearing Bitumi-nous Compounds3. Classification3.1 Type I is made from asphalts characte
8、rized as self-healing, adhesive, and ductile, and conforming to the require-ments of Specification D312/D312M, Type I; SpecificationD449/D449M, Types I or II; or Specification D946/D946M.3.2 Type II is made from asphalts characterized by highsoftening point and relatively low ductility, and conformi
9、ng tothe requirements of Specification D312/D312M Types II or III;or Specification D449/D449M, Type III.4. Materials and Manufacture4.1 Asphalt roof coatings shall consist of an asphalt base,volatile petroleum solvents, and mineral or other stabilizers, orboth, excluding asbestos fiber, mixed to a s
10、mooth, uniformconsistency suitable for application by squeegee, three-knotbrush, paint brush, roller, or by spraying.5. Composition5.1 Asphalt roof coatings complying with this specificationshall conform to the following composition limits:min maxWater content, % . 2.5Nonvolatile content, % 50 .Mine
11、ral and/or other stabilizers 5 20Bitumen (asphalt), % 40 .6. Physical Requirements6.1 UniformityAfter a thoroughly stirred sample has stoodfor 72 h at room temperature 23 6 2C 73.4 6 3.6F in aclosed container, it shall show no separation of solvent orsettling that cannot be overcome by moderate stir
12、ring.6.2 ConsistencyThe roof coating shall be of a consistencythat will spread readily and permit application by squeegee,brush, roller or spray at the rate of 1.25 m2/litre 50 ft2/gal onprepared roofing, saturated felt, and metal surfaces at ambienttemperatures above 10C 50F. Consistency at 25C 77F
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