1、Designation: D 6934 04Standard Test Method forResidue by Evaporation of Emulsified Asphalt1This standard is issued under the fixed designation D 6934; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber 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 the quantitative determinationof residue in emulsified asphalts composed principally of asemisolid or liquid asph
3、altic base, water, and an emulsifyingagent.1.2 This test method 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 regul
4、atory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E 11 Specification for Wire Cloth and Sieves for TestingPurposes3. Significance and Use3.1 The test may be used to indicate compositional charac-teristics of emulsified asphalt. Evaporation residue may also besubjected to othe
5、r characterization tests.3.2 This test method for residue by evaporation tends togive an asphaltic residue lower in penetration and ductility thanthe distillation test method. Material may be accepted but shallnot be rejected as failing to meet specifications containingrequirements for determination
6、 of residue by distillation, ondata obtained by evaporation. If residue from evaporation failsto meet the requirements for properties specified for residuefrom distillation, tests shall be rerun using the distillation testmethod.4. Summary of Method4.1 A sample of emulsified asphalt in an open top b
7、eaker isheated in an oven at 163 6 3C to determine the percentage ofasphalt residue. The residue from the evaporation may betested as required5. Sample Conditioning for Testing5.1 All emulsified asphalts shall be properly stirred toachieve homogeneity before testing.5.2 All emulsified asphalts with
8、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.5.3 Emulsified asphalts with viscosity testing require
9、mentsof 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 5.2 if necessary. In theevent the 5.2 method is used, the sample should be cooled to
10、25 6 3Cbefore testing.6. Apparatus6.1 Beakerslow form, 1000-mL capacity, made of glass ormetal.6.2 Glass Rodswith flame-polished ends, approximately 6mm in diameter and approximately 180 mm in length.6.3 Balancecapable of weighing 500 g to within 0.1 g.6.4 OvenCapable of maintaining a temperature of
11、 163 63C.6.5 SieveA 76.2-mm diameter 300-m sieve conformingto Specification E 11.7. Procedure A7.1 Use Procedure A when determination of the percentageof residue only is required.7.2 Determine the weight of each beaker containing a glassrod to 0.1 g. Weigh 50 6 0.1 g of thoroughly mixed, emulsifieda
12、sphalt into each of three beakers.7.3 Place the beakers containing the rods and sample in theoven, which has been adjusted to 163 6 3.0C, for 2 h. At theend of this period remove each beaker and stir the residuethoroughly. Replace in the oven for 1 h, then remove thebeakers from the oven, allow to c
13、ool to room temperature, andweigh, with the rods.NOTE 2Exercise care to prevent loss of asphalt from the beakerthrough foaming or spattering, or both. Also, the placing of beakers andemulsified asphalt samples in a cold or warm oven and bringing the ovenand sample up to a temperature of 163C togethe
14、r is permissible. If1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and are the direct responsibility of Subcommittee D04.42 onEmulsified Asphalt Tests.Current edition approved Aug. 1, 2004. Published August 2004.2For referenced ASTM standards, visit the
15、 ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, U
16、nited States.preferred, preliminary evaporation of water may be accomplished bycareful heating on a hot plate, followed by oven treatment at 163C for 1h.8. Procedure B8.1 Use Procedure B when tests on the residue from theemulsified asphalts are required.8.2 Proceed in accordance with 7.2 and 7.3 usi
17、ng four 50 60.1 g samples. After the calculation for percentage of residue,replace the beakers in the oven until the asphalt residue issufficiently fluid to pass through a 300-m sieve (usuallyrequiring 15 to 30 min). Pour the residue through the 300-msieve into suitable containers and molds for resi
18、due testing.9. Calculation and Report9.1 Calculate the percentage of residue on each beaker asfollows:residue, % 5 2A 2 B! (1)where:A = weight of beaker, rod, and residue, g, andB = tare weight of beaker and rod, g.9.2 Report the percentage of residue by evaporation as theaverage of all the beakers
19、tested.10. Precision and Bias10.1 The following criteria should be used for judging theacceptability of results (95 % probability):10.1.1 Duplicate results by the same operator should not beconsidered suspect unless they differ by more than the follow-ing amount:Residue by Evaporation, Repeatability
20、, weight %weight %50 to 70 0.410.1.2 The results submitted by each of two laboratoriesshould not be considered suspect unless they differ by morethan the following amount:Residue by Evaporation, Reproducibility, weight %weight %50 to 70 0.810.2 The bias of this test method cannot be determinedbecaus
21、e no material having an accepted reference value isavailable.11. Keywords11.1 asphalt; asphalt emulsion; cationic emulsified asphalt;emulsified asphalt; evaporation; residueASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentione
22、din this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and
23、must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of
24、theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C
25、700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D6934042
