ASTM_D_7553_-_15.pdf

Designation:D755315Standard Test Method forSolubility of Asphalt Materials in N-Propyl Bromide1This standard is issued under the fixed designation D7553;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number 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 covers the determination of the degreeof solubility in n-propyl bromide of asphalt materials.It isintended to be a replacement for Test Method D2042 specify-ing a solvent that,like trichloroethylene,is safe in that it has noflash point,and has similar solubilizing characteristics totrichloroethylene,but it is not considered to be an ozonedepleter banned by the Kyoto Protocol.NOTE1This method is not applicable to tars and their distillationresidues or highly cracked petroleum products.For methods covering tars,pitches,and other highly cracked petroleum products,and the use of othersolvents,see Test Methods D4,D2318,and D2764.1.2 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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.Specific precautionstatements are given in Section 7.2.Referenced Documents2.1 ASTM Standards:2D4 Test Method for Bitumen ContentD2042 Test Method for Solubility of Asphalt Materials inTrichloroethyleneD2318 Test Method for Quinoline-Insoluble(QI)Content ofTar and PitchD2764 Test Method for Dimethylformamide-Insoluble(DMF-I)Content of Tar and PitchD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD6368 Specification for Vapor-Degreasing Solvents Basedon normal-Propyl Bromide and Technical Grade normal-Propyl BromideE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Summary of Test Method3.1 The sample is dissolved in n-propyl bromide and filteredthrough a glass fiber pad.The insoluble material is washed,dried,and weighed.4.Significance and Use4.1 This test method is a measure of the solubility of asphaltin n-propyl bromide.The portion that is soluble in n-propylbromide represents the active cementing constituents.NOTE2The quality of the results produced by this standard aredependent on the competence of the personnel performing the procedureand the capability,calibration,and maintenance of the equipment used.Agencies that meet the criteria of Specification D3666 are generallyconsidered capable of competent and objective testing/sampling/inspection/etc.Users of this standard are cautioned that compliance withSpecification D3666 alone does not completely assure reliable results.Reliable results depend on many factors;following the suggestions ofSpecification D3666 or some similar acceptable guideline provides ameans of evaluating and controlling some of these factors.5.Apparatus and Materials5.1 The assembly of a typical filtering apparatus is illus-trated in Fig.1.Details of the component parts are as follows:5.1.1 Bitumen Crucible or Gooch Crucible,glazed insideand outside with the exception of outside bottom surface.Theapproximate dimensions shall be a diameter of 44 mm at thetop tapering to 36 mm at the bottom and a depth of 20 to 30mm.5.1.2 Glass Microfiber Filter Pad,3234 mm diameter,fineporosity,fast flow rate,1.5 m particle retention.5.1.3 Filter Flask,heavy-wall,with side tube,250,500,or1000 mL capacity.5.1.4 Filter Tube,40 to 42 mm inside diameter.1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.47 onMiscellaneous Asphalt Tests.Current edition approved June 1,2015.Published July 2015.Originallypublished 2010 as D7553 10.DOI:10.1520/D7553-15.2For 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 5.1.5 Rubber Tubing or Adapter,for holding the crucible onthe filter tube.NOTE3Other suitable assemblies permitting vacuum filtration with acrucible may be used.5.1.6 Erlenmeyer Flask,125 mL.5.1.7 Oven,capable of maintaining a temperature of 110 65C.6.Reagent6.1 n-