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1.1 This test method covers the determination of the staining tendency of asphalt and the assignment of a stain index proportional to the extent of staining observed.
1.2 This test method is applicable to asphalts having ring-and-ball softening points of 185°F (85°C) or greater.
Note 1—This test method may be modified for use with other bituminous materials with softening points less than 185°F (85°C) by using a different temperature than specified in Section 7 by agreement of the interested parties. The report of results from such a test may cite this method but must clearly state the temperature employed in the exception and acknowledge that the interpretation of results in Section and the precision and bias stated in Section 10 may not apply.
1.3 The values stated in U.S. customary units are to be regarded as the standard.
1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
D140 Practice for Sampling Bituminous Materials
E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
UNSPSC Code 30121601(Asphalt)
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ASTM D2746-97(2002), Standard Test Method for Staining Tendency of Asphalt (Stain Index), ASTM International, West Conshohocken, PA, 1997, www.astm.orgBack to Top