ASTM_D_6627_-_D_6627M_-_11.pdf

Designation:D6627/D6627M11Standard Test Method forDetermination of a Volatile Distillate Fraction of ColdAsphalt Mixtures1This standard is issued under the fixed designation D6627/D6627M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()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 260C 500F volatile distil-late fraction of cold mix asphalt mixtures.1.2 A precision and bias statement for this test method hasnot been developed since this test method is used for researchpurposes or information only.Therefore this test methodshould not be used for acceptance or rejection of a material forpurchasing purposes.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.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 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:2D244 Test Methods and Practices for Emulsified AsphaltsD979 Practice for Sampling Bituminous Paving MixturesD1461 Test Method for Moisture or Volatile Distillates inBituminous Paving MixturesD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances 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 temperature specific volatile distillate fraction in cold mixasphalt mixtures.4.Apparatus4.1 A Vertical Cylindrical Metal Still,similar to that used inTest Methods D244,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 copper or brass,and shall be providedwith a tubular opening of 25 mm 1 in.in inside diameter andan additional tubular opening of 13 mm 12in.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 of flexible stainless steel or glass tubing.Inserted into the 13 mm 12in.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-cooled reflux glass-tube type,having a condenser jacket not less than 400 mm 1534in.longwith an inner tube 9.5 to 13 mm 38to12in.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.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 mL3.4 floz.graduated with divisions of 0.1mL 0.003 floz.and attached to the condenser(s)by means ofa well-annealed glass bend.The glass bend attaching thecondenser to the graduated cylinder is secured by ground glassjoints on either end and vented with a 3 mm 18in.vent on topof the bend directly above the graduated cylinder to preventpressure in the apparatus.The collection flask is submerged tothe top of the gradations in an ice bath.4.4 Distillation Liquid,40 mL 1.4 floz.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.Avariable voltage transformer1This test method is under 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 June 1,2011.Published July 2011.Originally approvedin 2001.Last previous edition approved in 2006 as D6627 01(2006).DOI:10.1520/D6627_D6627M-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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 connected 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.4.6 Balance for W