ASTM D6627-2001(2006) Standard Test Method for Determination of a Volatile Distillate Fraction of Cold Asphalt Mixtures《冷沥青混合料挥发性馏份测定的标准试验方法》.pdf

1、Designation: D 6627 01 (Reapproved 2006)Standard Test Method forDetermination of a Volatile Distillate Fraction of ColdAsphalt Mixtures1This standard is issued under the fixed designation D 6627; the number immediately following the designation indicates the year oforiginal adoption or, in the case

2、of revision, the year of last revision. A 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 the determination, by directmeasurement, of the ambient to 500F (260

3、C) volatile distil-late fraction of cold mix asphalt mixtures.1.2 A precision and bias statement for the Standard has notbeen developed since this test method is used for researchpurposes or information only. Therefore this Standard shouldnot be used for acceptance or rejection of a material forpurc

4、hasing purposes.1.3 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this

5、 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 Standards:2D 244 Test Methods and Practices for Emulsified AsphaltsD 979 Practice for Sampling Bituminous Paving MixturesD 1461 Test

6、 Method for Moisture or Volatile Distillates inBituminous Paving MixturesD 4753 Guide for Evaluating, Selecting, and SpecifyingBalances and Standard Masses for Use in Soil, Rock, andConstruction Materials Testing3. Significance and Use3.1 This test method is used for determining the amount ofa tempe

7、rature specific volatile distillate fraction in cold mixasphalt mixtures.4. Apparatus4.1 A Vertical Cylindrical Metal Still, similar to that used inTest Methods D 244, having a faced flange at the top to whichthe head is tightly attached by means of a clamp. The head shallbe of a metal, preferably c

8、opper or brass, and shall be providedwith a tubular opening of 25 mm (1 in.) in inside diameter andan additional tubular opening of 13 mm (12 in.) in insidediameter. Threaded into the 25 mm (1 in.) tubular opening is astainless steel or brass fitting connected firmly to a groundglass joint by means

9、of flexible stainless steel or glass tubing.Inserted into the 13 mm (12 in.) tubular opening is a metalthermometer with a range of 93 to 538C (200 to 1000F)extending 125 mm (5 in.) into the metal still and firmlyconnected by means of a graphite ferrule compression fitting.4.2 Condenser, of the water

10、cooled reflux glass-tube type,having a condenser jacket not less than 400 mm (1534 in.) longwith an inner tube 9.5 to 13 mm (38 to12 in.) in the outsidediameter. The end of the condenser inserted in the ground glassjoint shall be ground off at an angle of 30 from the verticalaxis of the condenser.

11、For mixtures with very volatile solvents,it may be necessary to supplement this water-cooled condenserwith a second water-cooled condenser of approximately thesame dimensions.4.3 Collection Flask, cylinder of well-annealed glass havinga capacity of 100 mL graduated with divisions of 0.1 mL andattach

12、ed to the condenser(s) by means of a well-annealed glassbend. The glass bend attaching the condenser to the graduatedcylinder is secured by ground glass joints on either end andvented witha3mm(18 in.) vent on top of the bend directlyabove the graduated cylinder to prevent pressure in theapparatus. T

13、he collection flask is submerged to the top of thegradations in an ice bath.4.4 Distillation Liquid, 40 mL of distilled water.4.5 Heating Device, of high temperature electrical heatingtape wrapped around the entire still and the connecting tubingbetween the still and condenser. A variable voltage tr

14、ansformerconnected to the heating tape is used to control the rate oftemperature rise to approximately 5C (10F) per minute.Insulate the entire still, including the connecting tubing fromthe still to the condenser, with 25 mm (1 in.) of fiberglassinsulation to prevent heat loss.1This test method is u

15、nder the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.27 onCold Mix Asphalts.Current edition approved Dec. 15, 2006. Published December 2006. Originallyapproved in 2001. Last previous edition approved in 2001 as D 6627 01.2For re

16、ferenced 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, W

17、est Conshohocken, PA 19428-2959, United States.4.6 Balance for Weighing, conforms to Specification D 4753for Class GP2.5. Sampling5.1 Sampling shall be carried out in accordance with Prac-tice D 979. The sample shall be obtained and sealed at theproduction site within 30 s after completion of the as

18、phaltmixture production cycle.5.2 The sample shall be representative of the material andshall preferably be of such size to fill a friction top metal pail.A metal pail of 1 L (14 gal) capacity is preferred; however, afriction top metal pail of 2 L (12 gal) capacity is allowed. Keepthe pail tightly s

19、ealed at all times to avoid loss of volatiles.6. Sample and Test Specimen6.1 After obtaining a 700 6 5 g mass from the representa-tive sample as described in 5.1 and 5.2, record the mass of thesample to 0.1 g. Keep the remainder of the sample in the tightlycovered container.7. Procedure7.1 After the

20、 sample has been placed in the still, add 40 mLof distilled water.7.2 Assemble the components of the apparatus as illustratedin Fig. 1. Make all connections liquid and vapor tight. Insert agasket of heavy paper moistened with distilled water, or anonabsorbent gasket, between the still body and cover

21、 Thecondenser tube and collection flask must be clean to assure freedrainage into the collection flask.7.3 Apply heat so that the rate of temperature rise isapproximately 5C (10F) per minute. Maintain the sampletemperature at 260 6 5C (500 6 10F), for 15 min. Ifcondensate is being collected at the

22、end of the 15 min period,continue distillation until no condensate is being collected. Themaximum hold period at test temperature shall not exceed 30min.7.4 Record the volume of diluent in the collection flask tothe nearest 0.1 mL scale division. If applicable, transfer thesample to a clean, inert g

23、lass container, seal, and place inrefrigerator for distillate determination.NOTE 1The diluent is lighter than water, will be on top of the waterin the collection flask, and will tend to appear cloudy.8. Calculation8.1 Calculate the volatile distillate as follows:diluent,%5diluent vol, in collection

24、flask! 3 diluent density at 25C!original mass of sample3 100(1)NOTE 2Assume density of diluent based on knowledge of diluenttype or values in the range of 0.85 to 0.90 g/cm3, as set forth in accordancewith Test Method D 1461.9. Precision and Bias9.1 This test method was formerly part of Test MethodD

25、 1461. The statements on repeatability and reproducibilityfound in Test Method D 1461 are in the process of beingupdated.9.2 A precision and bias statement for the test method hasnot been developed since this test method is used for researchpurposes or information only. Therefore this test methodsho

26、uld not be used for acceptance or rejection of a material forpurchasing purposes.10. Keywords10.1 cold asphalt mixtures; cold mix; distillation; volatilesFIG. 1 Assembly with Collection FlaskD 6627 01 (2006)2ASTM International takes no position respecting the validity of any patent rights asserted i

27、n 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 infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the r

28、esponsible 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 standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive car

29、eful 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 shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Internation

30、al, 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).D 6627 01 (2006)3