1、Designation: D 6933 04Standard Test Method forOversized Particles in Emulsified Asphalts (Sieve Test)1This standard is issued under the fixed designation D 6933; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi
2、sion. 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.1. Scope1.1 This test method covers the degree to which a
3、n emulsi-fied asphalt may contain particles of asphalt or other discreetsolids retained on a 850-m mesh sieve.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 sa
4、fety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 88 Test Method for Saybolt ViscosityE 1 Specification for ASTM ThermometersE 11 Specification for Wire Cloth and Sieves for TestingPurposes3. Significance an
5、d Use3.1 The retention of an excessive amount of particles on thesieve indicates that problems may occur in handling andapplication of the material. Particles of asphalt retained on thesieve often are caused by agglomeration of the dispersed phase.Storage, pumping, handling, and temperature can all
6、contributeto the formation of particles. Contamination from the tank,transport, or hose are other factors affecting particle formation.4. Sample Conditioning for Testing4.1 All emulsified asphalts shall be properly stirred toachieve homogeneity before testing.4.2 All emulsified asphalts with viscosi
7、ty 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.4.3 Emulsified asphalts with viscosity testing requirementsof
8、 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 4.2, if necessary. In theevent the 4.2 method is used, the sample should be cooled to 25 6 3
9、Cbefore testing.5. Apparatus and Reagents5.1 SieveA sieve having a 76.2-mm frame conforming toSpecification E 11, and having a 850-m wire sieve cloth.5.2 PanA tin box cover or shallow metal pan of appro-priate size to fit over the bottom of the standard sieve.5.3 ThermometersASTM 17C for tests at 25
10、C andASTM 19C for tests at 50C, conforming to the requirementsof Specification E 1, or any other thermometric device of equalaccuracy.5.4 Nonionic Surfactant Solution (1 %)1 g of nonionicsurfactant (ethoxylated nonylphenol is recommended) dis-solved in distilled water and diluted to 100 mL.5.5 Disti
11、lled or Deionized Water5.6 Balancescapable of weighing 2000 g to within 61g,and 500 g to within 60.1 g.5.7 OvenCapable of maintaining temperature of 105 65C.5.8 Desiccator .6. Procedure6.1 The temperature at which the sieve test shall be per-formed is related to the emulsified asphalts viscosity. Fo
12、r thosematerials whose viscosity in saybolt furol seconds as deter-mined by Test Method D 88 is 100 s or less at 25C, performthe test at ambient temperature. For those materials whoseviscosity is more than 100 s at 25C and those whose viscosityis specified at 50C, use a test temperature of 50 6 3C.6
13、2 Determine the weight of the sieve and pan to the nearest0.1 g and record this weight. Wet the wire cloth with nonionicsurfactant solution.6.3 Weigh 1000+5goftheemulsified asphalt into asuitable container and pour it through the sieve. Wash thecontainer and the residue on the sieve with distilled
14、water ordeionized water until the washings run clear.1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.42 onEmulsified Asphalt Tests.Current edition approved Aug. 1, 2004. Published August 2004.2For refe
15、renced ASTM standards, visit the 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, Wes
16、t Conshohocken, PA 19428-2959, United States.6.4 Place the pan under the sieve and heat for2hina1056 5C drying oven. Cool in a desiccator, and weigh the sieve,pan, and residue to the nearest 0.1g.7. Calculation7.1 Calculate the percentage of sample retained on the sieveas follows:sample retained, %
17、5 B 2 A!/10 (1)where:A = weight of sieve and pan, g, andB = weight of sieve, pan, and residue, g.8. Report8.1 Report the percentage by weight of material retained onthe sieve (residue).9. Precision and Bias9.1 The following criteria should be used for judging theacceptability of results (95 % probab
18、ility):9.1.1 Duplicate results by the same operator should not beconsidered suspect unless they differ by more than the follow-ing amount:Sieve Test, weight % Repeatability, weight %0 to 0.1 0.039.1.2 The results submitted by each of two laboratoriesshould not be considered suspect unless they diffe
19、r by morethan the following amount:Sieve Test, weight % Reproducibility, weight %0 to 0.1 0.089.2 The bias of this test method cannot be determinedbacause no material having an accepted reference value isavailable.10. Keywords10.1 asphalt; distillation; cationic emulsified asphalt; emul-sified aspha
20、lt; asphalt emulsion; sieve testASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof
21、infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this st
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23、 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 C700, 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).D6933042
