1、Designation:C1716/C1716M19Standard Specification forCompression Testing Machine Requirements for ConcreteMasonry Units,Related Units,and Prisms1This standard is issued under the fixed designation C1716/C1716M;the number immediately following the designation indicates theyear of original adoption or,
2、in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification provides minimum design standardsfor testing machines used to measu
3、re the compressive strengthof concrete masonry units,related units,and masonry prismscovered under Test Methods C140/C140M and C1314.1.2 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall no
4、t be consideredas requirements of this standard.1.3 This specification shall be used to determine the maxi-mum allowable specimen size and the maximum allowableload limits on a specific specimen for any test machine.Theselimits are based on deflection of the bearing surfaces and themachine load fram
5、e.These limits may not reflect the actualcapacity of the machine and do not supersede the machinemanufacturers recommended operational limits.The user mustdetermine if testing machine capacities,allowable specimensize and maximum allowable load are appropriate for thesample to be tested.1.4 The valu
6、es 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 may result in non-conformancewith the standard.1.5
7、 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.1.6 Thi
8、s 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(T
9、BT)Committee.2.Referenced Documents2.1 ASTM Standards:2C140/C140M Test Methods for Sampling and Testing Con-crete Masonry Units and Related UnitsC1093 Practice for Accreditation of Testing Agencies forMasonryC1232 Terminology for MasonryC1314 Test Method for Compressive Strength of MasonryPrismsE4 P
10、ractices for Force Verification of Testing Machines3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification,referto Terminology C1232.3.2 Definitions of Terms Specific to This Standard:3.2.1 bearing,adjdirect contact with the specimen beingtested,as in bearing plate,bea
11、ring block,and bearing platen.3.2.1.1 DiscussionPlates,blocks or platens used for bear-ing purposes must have hardened bearing surfaces.Spacers donot have to be hardened.Blocks are structural while plates arenot.3.2.2 block,nsteel piece 50 mm 2 in.thick or greaterthat provides additional load capaci
12、ty in bending to platens.3.2.2.1 DiscussionBlocks may be used to accommodatetesting specimens of various heights in a testing machine.Hardened blocks can be used as bearing surfaces.3.2.3 composite,adjmade up of two or more pieces ormaterials.3.2.4 load frame,nall components of the testing machineth
13、at react against forces applied to the test specimen duringtesting.3.2.5 plate,nsteel piece less than 50 mm 2 in.thick thatdoes not provide additional load capacity in bending to platens.1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direc
14、t responsibility of SubcommitteeC15.04 on Research.Current edition approved May 1,2019.Published June 2019.Originallyapproved in 2010.Last previous edition approved in 2018 as C1716/C1716M 18a.DOI:10.1520/C1716_C1716M-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AS
15、TM 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
16、,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 3.2.5.1 DiscussionPlates may be used to accommodatetest specimens of various heights in a testing machine but donot provide additional load capacity in bend