1、Designation:C1758/C1758M15Standard Practice forFabricating Test Specimens with Self-ConsolidatingConcrete1This standard is issued under the fixed designation C1758/C1758M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of la
2、st 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 practice covers procedures for fabricating testspecimens in the laboratory or field using a representativesample of fre
3、sh self-consolidating concrete(SCC).This prac-tice is applicable to SCC with a nominal maximum aggregatesize up to 25 mm 1 in.and a slump flow of 500 mm 20 in.or greater.If the slump flow is less than 500 mm 20 in.followthe fabrication procedures described in the standard for whichthe test specimen
4、is required.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 may result in non-conforma
5、ncewith the standard.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to u
6、se.(WarningFreshhydraulic cementitious mixtures are caustic and may causechemical burns to exposed skin and tissue upon prolongedexposure.2)1.4 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)s
7、hall not be consideredas requirements of the standard.2.Referenced Documents2.1 ASTM Standards:3C125 Terminology Relating to Concrete and Concrete Ag-gregatesC172 Practice for Sampling Freshly Mixed ConcreteC192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC1611/C1611
8、M Test Method for Slump Flow of Self-Consolidating Concrete3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this practice,refer toTerminology C125.3.2 Definitions of Terms Specific to This Standard:3.2.1 test specimen,nself-consolidating concrete placedin a mold,measure,measuring
9、bowl,or other containerfollowing this standard with the top surface struck off andfinished following the standard for which the test specimen isrequired.4.Significance and Use4.1 Existing practices and test methods for fabricating freshconcrete test specimens are not suited to SCC.This practiceprovi
10、des requirements and procedures for fabricating testspecimens with SCC having a slump flow of 500 mm 20 in.or greater.5.Apparatus5.1 Specimen ContainerMolds,measures,measuringbowls,and containers used for fabricating test specimensaccording to this practice shall conform to the requirementsdescribed
11、 in the standard for which the test specimen isrequired.5.2 Sample ReceptacleA pan or wheelbarrow that iswater-tight,has a nonabsorbent surface,and is large enough toallow both remixing of the entire sample and retain a volumeof concrete sufficient to fill the specimen container.5.3 Pouring Vessel f
12、or SCCAwater-tight container havinga volume such that concrete is not spilled during placement inthe specimen container.NOTE1A pouring vessel with a pouring lip is useful in reducing theprobability of concrete spilling while filling the specimen container.1This practice is under the jurisdiction of
13、ASTM Committee C09 on Concreteand ConcreteAggregates and is the direct responsibility of Subcommittee C09.47 onSelf-Consolidating Concrete.Current edition approved Feb.1,2015.Published April 2015.Originallyapproved in 2011.Last previous edition approved in 2013 as C1758/C1758M-13.DOI:10.1520/C1758_C
14、1758M-15.2See section on Safety Precautions,Manual of Aggregate and Concrete Testing,Annual Book of ASTM Standards,Vol.04.02.3For 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
15、 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 States1 5.4 Other ToolsItems such as shovels and scoops capableof remixing
16、 the concrete in the sample receptacle,filling thepouring vessel,or both.6.Sampling Concrete6.1 Obtain a sample of freshly mixed self-consolidatingconcrete in accordance with Practice C172,or Practice C192/C192M,and place it in the sample receptacle.7.Procedure7.1 Measure and record the slump flow of the sampledconcrete in accordance with Test Method C1611/C1611M.Forconcrete with a slump flow of 500 mm 20 in.or greater,fabricate test specimens as follows.7.2 Identify,position,and prepare the spe
