ASTM D6935-2011 2500 Standard Test Method for Determining Cement Mixing of Emulsified Asphalt《乳化沥青水泥混合配比测定的标准试验方法》.pdf

1、Designation: D6935 11Standard Test Method forDetermining Cement Mixing of Emulsified Asphalt1This standard is issued under the fixed designation D6935; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu

2、mber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method is intended to be a mixing test used toidentify or classify a slow setting, SS or CSS, type ofemulsified asphalt.1.2 Thi

3、s 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 regulatory limitations prior to use.2. Referenced Docum

4、ents2.1 ASTM Standards:2C115 Test Method for Fineness of Portland Cement by theTurbidimeterC150 Specification for Portland CementE11 Specification for Woven Wire Test Sieve Cloth and TestSievesD6934 Test Method for Residue by Evaporation of Emul-sified AsphaltD6997 Test Method for Distillation of Em

5、ulsified Asphalt3. Significance and Use3.1 The result of this test method indicates the ability of aslow setting emulsified asphalt to mix with a finely divided,high surface area material (high early strength, Type III,portland cement) without breaking the emulsified asphalt.4. Sample Conditioning f

6、or Testing4.1 All emulsified asphalts shall be properly stirred toachieve homogeneity before testing.4.2 All 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 pr

7、essure. After the sample reaches 50 63C, stir the sample to achieve homogeneity.4.3 Emulsified asphalts with 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

8、 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 3Cbefore testing.5. Apparatus5.1 Sievesa 180-m sieve and a 1.40-mm sieve with adiameter of approximately 75 mm, made of wire cloth con-forming to Specification

9、E11.5.2 Pana tin box cover or shallow metal pan of appropri-ate size to fit over the bottom of the standard sieve.5.3 Mixing Bowla round-bottom metal dish or a kitchensaucepan of approximately 500-mL capacity.5.4 Stirring Roda metal rod with rounded ends, approxi-mately 10 mm in diameter.5.5 Graduat

10、ea 100-mL graduated cylinder.5.6 Balance, capable of weighing 1000 g to the nearest 0.1g.5.7 Ovencapable of maintaining a temperature of 163 63C.5.8 Thermometera thermometric device capable of mea-suring the temperature of the oven and the emulsified asphalt towithin 1C.6. Reagents and Materials6.1

11、Cementhigh-early-strength portland cement conform-ing to the requirements for Type III portland cement inSpecification C150 and having a minimum specific surfacearea of 1900 cm2/g, as measured by Test Method C115,Standard Test Method for Fineness of Portland Cement by theTurbidimeter.7. Procedure7.1

12、 Dilute the emulsified asphalt with distilled or deionizedwater to a residue of 55 %, as determined by distillation (TestMethod D6997) or by evaporation for 3 h at 163 6 3C. (TestMethod D6934). Calculate the amount of water to be added tothe emulsified asphalt by using the equation:1This test method

13、 is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.42 onEmulsified Asphalt Test.Current edition approved June 1, 2011. Published July 2011 Originally approvedin 2004. Last previous edition approved in 2004 as D693504. DOI

14、: 10.1520/D6935-11.2For referenced 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 Ha

15、rbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.% Water 5 10055 4 % Residue! x 100 (1)7.2 Sieve a portion of the cement through the 180-m sieve.Weigh 50.0 6 0.1 g of the cement passing the 180-m sieveinto the metal dish or saucepan.7.3 Bring the ingredients and apparatus to

16、a temperature ofapproximately 25C before mixing. Add 100 mL of the dilutedemulsified asphalt to the cement and stir the mixture at oncewith the metal rod, using a circular motion at a rate of 60revolutions per minute, for 1 min. At the end of the 1-minmixing period, add approximately 150 mL of disti

17、lled ordeionized water, and continue the stirring for an additional 3min.NOTE 2Rinsing the sample cylinder with three portions of approxi-mately 50 mL of distilled or deionized water is an acceptable procedurefor accomplishing this step.7.4 Determine the mass of the 1.40-mm sieve and pan to theneare

18、st 0.1 g, and record the weight.7.5 Pour the mixture through the 1.40-mm sieve. Userepeated washings to completely remove material from themixing bowl and pour these washings over the sieve. Rinse thesieve using distilled or deionized water poured from a height ofapproximately 150 mm until the rinse

19、 water is clear.7.6 Place the sieve in the pan and heat at 163 6 3C for 1h. Allow the sieve and pan to cool, and then weigh. Repeat theheating and weighing until successive weights differ by nomore than 0.1 g.8. Calculation8.1 Calculate the mass of sample retained on the sieve andpan as follows:mass

20、 retained 5 B A (2)where:A = mass of sieve and pan, g,B = mass of sieve, pan, and residue, g.9. Report9.1 Report the mass, in grams, of the material retained onthe sieve and in the pan as the percentage of break in the test.10. Precision and Bias10.1 The following criteria should be used for judging

21、 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:Cement Mixing, mass % Repeatability, mass %0to2 0.210.1.2 The results submitted by each of two laboratoriesshould not be

22、 considered suspect unless they differ by morethan the following amount:Cement Mixing, mass % Reproducibility, mass %0to2 0.410.2 The bias of this test method cannot be determinedbecause no material having an accepted reference value isavailable.11. Keywords11.1 asphalt; emulsified asphalt; asphalt

23、emulsion; cationicemulsified asphalt; cementASTM 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

24、 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 revisio

25、n 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 sho

26、uldmake 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D6935 112