1、Designation: D 6935 04Standard Test Method forDetermining Cement Mixing of Emulsified Asphalt1This standard is issued under the fixed designation D 6935; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、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 test method covers mixing test used to identify orclassify a slow setting, SS or CSS, type of emulsion.1.2 This test method does
3、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 Documents2.1 ASTM Standa
4、rds:2C 115 Test Method for Fineness of Portland Cement by theTurbidimeterC 150 Specification for Portland CementE 11 Specification for Wire-Cloth and Sieves for TestingPurposesD 6934 Test Method for Residue by Evaporation of Emul-sified AsphaltD 6997 Test Method for Distillation of Emulsified Asphal
5、t3. 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 for Testing4.1 A
6、ll 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 pressure. After t
7、he 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 of25C may be h
8、eated 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 76.2-mm diameter1.40-mm sieve, made of wire cloth conforming to SpecificationE11.5.2 Pana tin box cover or shallow m
9、etal 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 Graduatea 100-mL graduated cylinder.5.6 Balanc
10、e, capable of weighing 1000 g to the nearest 0.1g.5.7 Ovencapable of maintaining a temperature of 163 63C.6. Reagents and Materials6.1 Cementhigh-early-strength portland cement conform-ing to the requirements for Type III portland cement inSpecification C 150 and having a minimum specific surfaceare
11、a of 1900 cm2/g, as measured by Test Method C 115,Standard Test Method for Fineness of Portland Cement by theTurbidimeter.7. Procedure7.1 Dilute the emulsified asphalt with distilled water to aresidue of 55 %, as determined by distillation (Test MethodD 6997) or by evaporation for3hat1636 3C. (Test
12、MethodD 6934).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 a temperature ofapproximately 25C before mixing. Add 100 mL of the dilutedemulsified asphalt to t
13、he cement and stir the mixture at once1This 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 referenced ASTM sta
14、ndards, 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, West Conshohocken,
15、 PA 19428-2959, United States.with 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 150 mL of distilled water, and continue thestirring for an additional 3 min.7.4 Determine the weight of the sieve and pan to the neare
16、st0.1 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 water poured from a height of approxi-mately 150 mm until the rinse water is cl
17、ear.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 weight of sample retained on the sieve andpan as follows:weight retaine
18、d 5 B A (1)where:A = weight of sieve and pan, g,B = weight of sieve, pan, and residue, g.9. Report9.1 Report the weight, 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 t
19、heacceptability 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, weight % Repeatability, weight %0to2 0.210.1.2 The results submitted by each of two laboratoriesshould not
20、be considered suspect unless they differ by morethan the following amount:Cement Mixing, weight % Reproducibility, weight %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; as
21、phalt 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 right
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24、ou 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).D6935042
