1、Designation:D2171/D2171M22Standard Test Method forViscosity of Asphalts by Vacuum Capillary Viscometer1This standard is issued under the fixed designation D2171/D2171M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.This test method has been approved by the sponsoring c
3、ommittees and accepted by the cooperating societies in accordance withestablished procedures.1.Scope1.1 This test method covers procedures for the determina-tion of the apparent viscosity of asphalt binder by vacuumcapillary viscometers at 60 C 140 F.It is applicable tomaterials having viscosities i
4、n the range from 0.0036 to over20 000 Pas 0.036 to over 200 000 P.NOTE1This test method is suitable for use at other temperatures,butthe precision is based on determinations on asphalt binders at 60 C140 F.NOTE2Modified asphalt binders or asphalt binders that have beenconditioned or recovered are ty
5、pically non-Newtonian under the condi-tions of this test.The apparent viscosity for non-Newtonian asphaltbinders varies with shear rate.When the flow is non-Newtonian in acapillary tube,the shear rate determined using this test method may beinvalid.The presence of non-Newtonian behavior for the test
6、 conditions ofthis test can be verified by measuring the viscosity with viscometershaving different-sized capillary tubes or with different pressure heads.Thedefined precision limits in Section 11 may not be applicable to non-Newtonian asphalt binders.Test Method D4957 may be a more applicablemethod
7、 for testing non-Newtonian asphalts.1.2 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 ma
8、y result in nonconformancewith the standard.1.3 WarningMercury has been designated by the UnitedStates Environmental ProtectionAgency(EPA)and many stateagencies as a hazardous material that can cause central nervoussystem,kidney,and liver damage.Mercury,or its vapor,maybe hazardous to health and cor
9、rosive to materials.Cautionshould be taken when handling mercury and mercury-containing products.See the applicable product MaterialSafety Data Sheet(MSDS)or Safety Data Sheet(SDS)fordetails and the EPAs websitehttp:/www.epa.gov/mercury/faq.htmfor additional information.Users should be awarethat sel
10、ling mercury,mercury-containing products,or both,inyour state may be prohibited by state law.1.4 The text of this standard references notes and footnotesthat provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the sta
11、ndard.1.5 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 us
12、e.1.6 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 t
13、o Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsD8 Terminology Relating to Materials for Roads and Pave-mentsD3666 Specification for Minimum Requirements for Agen-cies Testing and Insp
14、ecting Road and Paving MaterialsD4957 Test Method forApparent Viscosity ofAsphalt Emul-sion Residues and Non-Newtonian Asphalts by VacuumCapillary ViscometerE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE77 Test Method for Inspe
15、ction and Verification of Ther-mometersE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.44 onRheological T
16、ests.Current edition approved Nov.1,2022.Published November 2022.Originallyapproved in 1963.Last previous edition approved in 2018 as D2171/D2171M 18.DOI:10.1520/D2171_D2171M-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 1942
