ASTM_D_8078_-_18e1.pdf

Designation:D8078181Standard Test Method forAsh Content of Asphalt and Emulsified Asphalt Residues1This standard is issued under the fixed designation D8078;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.1NOTEAdded research report footnote to Section 8 editorially in September 2019.1.Scope1.1 This test method measures the ash content of an asphaltor emulsified asphalt residue.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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.1.4 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD6934 Test Method for Residue by Evaporation of Emulsi-fied AsphaltD6997 Test Method for Distillation of Emulsified AsphaltD7497 Practice for Recovering Residue from EmulsifiedAsphalt Using Low Temperature Evaporative TechniqueE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 AASHTO Standard:3AASHTO R78 Recovering Residue from EmulsifiedAsphaltusing Low-Temperature Evaporative Techniques3.Summary of Test Method3.1 A known amount of asphalt or emulsified asphaltresidue is put into a crucible,which is then placed into a mufflefurnace for a period of time to incinerate any organic materialspresent and allow gravimetric calculation of the ash content ofthe specimen.4.Significance and Use4.1 This test is used for determining the amount of inorganicor non-organic materials in an asphalt or emulsified asphaltresidue.The emulsified asphalt residue can be obtained bymethods such as Test Methods D6934 and D6997,PracticeD7497,AASHTO R78,or other agency-specified methods.This test may be useful as an alternative to solubility tests whena confounding material creates an interference to the solubilitytest being performed acceptably.An example of an interferingmaterial is a polymer which may be incompatible with thesolubility test solvent and plug the filter.NOTE1The 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 ensure 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 those factors.5.Apparatus5.1 CruciblePorcelain or quartz-fiber,of sufficient size(normally 30 to 100-cm3capacity)and suitability for mufflefurnace,may be used.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 April 1,2018.Published April 2018.Originallyapproved in 2016.Last previous edition approved in 2016 as D8078 16.DOI:10.1520/D8078-18E01.2For 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.3Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Tr