ASTM_D_6934_-_22.pdf

Designation:D693422Standard Test Method forResidue by Evaporation of Emulsified Asphalt1This standard is issued under the fixed designation D6934;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 quantitative determinationof residue in emulsified asphalts composed principally of asemisolid or liquid asphaltic base,water,and an emulsifyingagent.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 MaterialsD6997 Test Method for Distillation of Emulsified AsphaltE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Significance and Use3.1 The test may be used to indicate compositional charac-teristics of emulsified asphalt.Evaporation residue may also besubjected to other characterization tests.3.2 This test method for residue by evaporation tends togive an asphaltic residue lower in penetration and ductility thanthe distillation test method(D6997).Material may be acceptedbut shall not be rejected as failing to meet specificationscontaining requirements for determination of residue bydistillation,on data obtained by evaporation.If residue fromevaporation fails to meet the requirements for propertiesspecified for residue from distillation,tests shall be rerun usingthe distillation test method.NOTE1The quality of results produced by this standard is dependenton the competence of the personnel performing the procedure and thecapability,calibration,and maintenance of the equipment used.Agenciesthat meet the criteria of Specification D3666 are generally consideredcapable of competent and objective testing,sampling,inspection,etc.Users of this standard are cautioned that compliance with SpecificationD3666 alone does not completely ensure reliable results.Reliable resultsdepend on many factors;following the suggestions of Specification D3666or some similar acceptable guidance provides a means of evaluating andcontrolling some of those factors.4.Summary of Method4.1 A sample of emulsified asphalt in an open top beaker isheated in an oven at 163 6 3 C to determine the percentage ofasphalt residue.The residue from the evaporation may betested as required.5.Sample Conditioning for Testing5.1 All emulsified asphalts shall be properly stirred toachieve homogeneity before testing.5.2 All emulsified asphalts with viscosity testing require-ments of 50 C shall be heated to 50 6 3 C in the originalsample container in a water bath or oven.The container shouldbe vented to relieve pressure.After the sample reaches 50 63 C,stir the sample to achieve homogeneity.5.3 Emulsified asphalts with viscosity testing requirementsof 25 C should be mixed or stirred at 25 6 3 C in the originalsample container to achieve homogeneity.NOTE2Emulsified asphalts with viscosity testing requirements of25 C may be heated and stirred as specified in 5.2 if necessary.Forexample,if there is settlement at the bottom of the container the sample1This 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 Test.Current edition approved July 1,2022.Published July 2022.Originally approvedin 2004.Last previous edition approved in 2016 as D6934 08(2016).DOI:10.1520/D6934-22.2For 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decis