1、Designation: D 6933 08Standard 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 244 Test Methods and Practices for Emulsified AsphaltsE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Wire Cloth and Sieves for T
5、estingPurposes3. Significance and 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, ha
6、ndling, and temperature can all 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
7、emulsified asphalts 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.4.3 Emulsified asphalts with
8、viscosity testing 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 4.2, if necessary. In theevent the 4.2 method is used, the s
9、ample should be cooled to 25 6 3Cbefore testing.5. Apparatus and Reagents5.1 SieveA sieve having a nominal 76-mm frame con-forming to Specification E11, and having a 850-m wire sievecloth.5.2 PanA tin box cover or shallow metal pan of appro-priate size to fit over the bottom of the standard sieve.5.
10、3 Thermometric deviceASTM 17C for tests at 25C andASTM 19C for tests at 50C, conforming to the requirementsof Specification E1, or any other thermometric device of equalaccuracy.5.4 Nonionic Surfactant Solution (1 %)1 g of nonionicsurfactant (ethoxylated nonylphenol is recommended) dis-solved in dis
11、tilled water and diluted to 100 mL.5.5 Distilled 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 110 65C.5.8 Desiccator.6. Hazards6.1 WARNING: Mercury has been designated by theUnited States Environmental
12、 Protection Agency (EPA) andmany state agencies as a hazardous material that can causecentral nervous system, kidney and liver damage. Mercury, orits vapor, may be hazardous to health and corrosive to1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is
13、 the direct responsibility of Subcommittee D04.42 onEmulsified Asphalt Tests.Current edition approved Jan. 1, 2008. Published January 2008. Originallyapproved in 2004. Last previous edition approved in 2004 as D 6933 04.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact
14、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, United States.materials. Caution should
15、be taken when handling mercury andmercury containing products. See the applicable product Ma-terial Safety Data Sheet (MSDS) for details and EPAswebsitewww.epa.gov/mercury/faq.htmfor additional in-formation. Users should be aware that selling mercury, mer-cury containing products, or both, into your
16、 state may beprohibited by state law.7. Procedure7.1 The temperature at which the sieve test shall be per-formed is related to the emulsified asphalts viscosity. For thosematerials whose viscosity in Saybolt Furol seconds as deter-mined by Test Method D 244 is 100 s or less at 25C, performthe test a
17、t 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.7.2 Determine the mass of the sieve and pan to the nearest0.1 g and record this mass as “A”. Wet the wire cloth withnonionic surfactant
18、solution.7.3 Determine the mass of the sample container containingthe emulsified asphalt to 0.1 g. Record this mass as “C”. Pour8001000 g of the emulsified asphalt through the sieve (if thesample container contains 8001000 g of sample, pour theentire contents). Determine the mass of the sample conta
19、inerpreviously containing the emulsified asphalt to 0.1 g. Recordthis mass as “D”. Wash the residue on the sieve with distilledwater or deionized water until the washings run clear.7.4 Place the pan under the sieve and heat for2hina1106 5C drying oven. Cool in a desiccator. Determine the massof the
20、sieve, pan, and residue to the nearest 0.1g. Record thismass as “B”.8. Calculation8.1 Calculate the percentage of sample retained on the sieveas follows:Oversized Particles, % 5 B2A!/C2D!#100 (1)where:A = mass of sieve and pan, g,B = mass of sieve, pan, and residue,C = mass of full sample container,
21、 g, andD = mass of empty sample container, g.9. Report9.1 Report the percentage by mass of material retained onthe sieve (residue).10. Precision and Bias10.1 The following criteria should be used for judging theacceptability of results (95 % probability):NOTE 2The precision data shown here was deter
22、mined using 1000 gsamples.10.1.1 Duplicate results by the same operator should not beconsidered suspect unless they differ by more than the follow-ing amount:Sieve Test, mass % Repeatability, mass %0to0.1 0.0310.1.2 The results submitted by each of two laboratoriesshould not be considered suspect un
23、less they differ by morethan the following amount:Sieve Test, mass % Reproducibility, mass %0to0.1 0.0810.2 The bias of this test method cannot be determinedbecause no material having an accepted reference value isavailable.11. Keywords11.1 asphalt; asphalt emulsion; cationic emulsified asphalt;emul
24、sified asphalt; oversized particles; 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,
25、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 must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revi
26、sion of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you
27、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 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).D6933082
