ASTM_C_1005_-_17.pdf

Designation:C100517Standard Specification forReference Masses and Devices for Determining Mass andVolume for Use in the Physical Testing of HydraulicCements1This standard is issued under the fixed designation C1005;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.Scope*1.1 This specification covers the minimum requirements forscales,balances,reference masses,and glass graduates used inthe physical testing of hydraulic cements.1.2 Requirements for analytical reference masses and bal-ances are not included in this specification,but are to be foundin Test Methods C114.The use of restrictive terminology,classes,ranges,and so forth has been intentionally avoided toallow the use of this specification by other standards-writingbodies with similar requirements for reference masses anddevices for determining mass,if desired.1.3 These requirements are not sufficiently descriptive to beused as the sole specifications for the purchase of referencemasses or devices for determining mass without amplification.1.4 Values in SI units shall be obtained by measurement inSI units or by appropriate conversion,using the Rules forConversion and Rounding given in IEEE/ASTM SI10,ofmeasurement made in other units.2.Referenced Documents2.1 ASTM Standards:2C114 Test Methods for Chemical Analysis of HydraulicCementE617 Specification for Laboratory Weights and PrecisionMass StandardsIEEE/ASTM SI10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System3.Terminology3.1 Definitions:3.1.1 accuracy,ndegree of conformity of the indication ofa device for determining mass to the true value of an appliedmass.3.1.2 balance,na device for determining mass that com-pares a mass with standard masses.3.1.3 precision,nreproducibility of the readings of adevice for determining mass when a given test mass is applied.3.1.4 range of mass determination,nthe range of indica-tions of a device from the minimum test load plus any aids orcontainers on the load-receiving elements to the maximum testload with the same aids or containers,as specified by theparticular method of test being used.3.1.5 readability,nthe smallest fraction of a division towhich the index scale of a device for determining mass can beread with ease either by estimation or by use of a vernier.3.1.6 reference mass,na piece of material of knownspecified mass for use in comparing or measuring the mass ofother masses(See Note 1).3.1.6.1 DiscussionThe definition of“reference mass”wasformerly incorrectly designated“weight;”weight is a force(See IEEE/ASTM SI10).3.1.7 scale,na device for determining mass having aload-receiving element and an index scale(possibly in combi-nation with the use of internal masses or proportional masses),almost always calibrated to indicate mass;generally of lesseraccuracy than a balance.3.1.8 sensitivity,nthe minimum change of applied massrequired to perceptibly move the indicating element of a devicefor determining mass.3.1.9 sensitivity requirement,nthe minimum change inposition of rest of the indicating element of a device fordetermining mass in response to a specified change of massload on the load-receiving element.3.1.10 test load,nthe mass to be determined in a singledetermination,exclusive of aids or containers,as specified inthe test method being followed.3.1.11 tolerance,nprecision and accuracy criteria forreference masses or devices for determining mass.1This specification is under the jurisdiction of ASTM Committee C01 onCement and is the direct responsibility of Subcommittee C01.95 on Coordination ofStandards.Current edition approved March 15,2017.Published March 2017.Originallyapproved in 1983.Last previous edition approved in 2010 as C1005 10.DOI:10.1520/C1005-17.2For 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.*A Summary of Changes section appears at the end of this standardCopyright 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 Trade(TBT)Committee.1 acceptance tolerancethe maximum permissible deviationfrom correct indication for new or newly reconditioned oradjusted reference masses or devices for determining mass;equal to12the maintenance tolerance.adjustment toleranceacceptance tolerance.maintenance tolerancemaximum permissible deviationfrom correct indication fo