ASTM D6998-2004 Standard Practice for Evaluating Aggregate Coating using Emulsified Asphalts《评价乳化沥青集料涂层的标准实施规程》.pdf
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1、Designation: D 6998 04Standard Practice forEvaluating Aggregate Coating using Emulsified Asphalts1This standard is issued under the fixed designation D 6998; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. 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 practice covers those emulsified asphalts intendedfor use by mixing with aggregate. It is not applicable torapid-setting type
3、s or diluted materials used for tack coats,priming, or mulch treatments.1.2 This practice 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 t
4、he applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E 11 Specification for Wire Cloth and Sieves for TestingPurposes3. Sample Conditioning for Testing3.1 All emulsified asphalts shall be properly stirred toachieve homogeneity.3.2 All emulsified asphalt
5、s with viscosity testing require-ments of 50C shall be heated to 50 6 3C in the originalsample container in a water bath or oven. The container shouldbe vented to relieve pressure. After the sample reaches 50 63C, stir the sample to achieve homogeneity.3.3 Emulsified asphalts with viscosity testing
6、requirementsof 25C should be mixed or stirred at 25 6 3C in the originalsample container to achieve homogeneity.NOTE 1Emulsified asphalts with viscosity testing requirements of25C may be heated and stirred as specified in 3.2, if necessary. In theevent the 3.2 method is used, the sample should be co
7、oled to 25 6 3C.4. Significance and Use4.1 The intent of this practice is to ensure that a givenmixing grade emulsified asphalt is stable enough and otherwisepossesses the ability to mix with a reference stone for theprescribed time, and coat it uniformly and thoroughly.5. Apparatus and Material5.1
8、SievesStandard 19.0-mm and 6.3-mm sieves con-forming to Specification E 11.5.2 SpatulaA steel spatula or its equivalent, having ablade approximately 200 mm in length.5.3 DishA round-bottom iron dish or a kitchen saucepan,of approximately 1 L capacity.5.4 StoneA supply of reference stone (hard limest
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