1、Designation:C171214Standard Test Method forRapid Assessment of Static Segregation Resistance of Self-Consolidating Concrete Using Penetration Test1This standard is issued under the fixed designation C1712;the number immediately following the designation indicates the year oforiginal adoption or,in t
2、he 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 test method covers the rapid assessment of staticsegregation resistance of normal-wei
3、ght self-consolidatingconcrete(SCC).The test does not measure static segregationresistance directly,but provides an assessment of whetherstatic segregation is likely to occur.1.2 The test apparatus and protocol were developed basedon tests with SCC mixtures containing saturated surface dry(SSD)coars
4、e aggregates ranging in relative density from 2.67to 2.79 and in nominal maximum size from 9.5 mm to 25 mm.For SCC mixtures outside these ranges,testing is recom-mended to establish a correlation between penetration depthand static segregation measured in accordance with TestMethod C1610/C1610M.This
5、 test method shall not be used toassess the static segregation resistance of self-consolidatingconcrete containing lightweight aggregates or heavyweightaggregates without prior testing to establish a correlation.1.3 The values stated in SI units are to be regarded asstandard.No other units of measur
6、ement are included in thisstandard.1.4 The text of this standard references notes and footnotesthat provide explanatory material.These notes and footnotesshall not be considered as requirements of the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated
7、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 use.(WarningFreshhydraulic cementitious mixtures are caustic and may causechemical burns to skin and tissue upon
8、 prolonged exposure.2)2.Referenced Documents2.1 ASTM Standards:3C125 Terminology Relating to Concrete and Concrete Ag-gregatesC143/C143M Test Method for Slump of Hydraulic-CementConcreteC172 Practice for Sampling Freshly Mixed ConcreteC173/C173M Test Method forAir Content of Freshly MixedConcrete by
9、 the Volumetric MethodC192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC1610/C1610M Test Method for Static Segregation of Self-Consolidating Concrete Using Column TechniqueC1611/C1611M Test Method for Slump Flow of Self-Consolidating Concrete3.Terminology3.1 Definiti
10、ons:3.1.1 For definitions of terms used in this test method,referto Terminology C125.3.2 Definitions of Terms Specific to This Standard:3.2.1 static segregation resistance,nresistance of a con-crete mixture to segregation of the mortar component from thecoarse aggregate while the concrete is at rest
11、 and before initialsetting.4.Summary of Test Method4.1 This test method uses a penetration apparatus(shown inFigs.1 and 2)and an inverted slump mold(Fig.3).A sampleof freshly mixed self-consolidating concrete is placed in aninverted slump mold without tamping or vibration.The hollowcylinder attached
12、 to a metal rod is aligned in the center of theinverted slump mold as shown in Fig.3.The hollow cylinderis then lowered onto the surface of the concrete and released tofreely penetrate into the fresh concrete.The penetration depth1This test method is under the jurisdiction of ASTM Committee C09 onCo
13、ncrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.47 on Self-Consolidating Concrete.Current edition approved April 1,2014.Published June 2014.Originallyapproved in 2009.Last previous edition approved in 2009 as C1712 09.DOI:10.1520/C1712/C1712M-14.2Section on Safety
14、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 to the standards Document Summa
15、ry 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(Pd)is determined and used to assess the static segregationresistance of the self-consolidating con
16、crete mixture(1-5).45.Significance and Use5.1 This test method is for the rapid assessment of the staticsegregation resistance of self-consolidating concrete.4The boldface numbers in parentheses refer to a list of references at the end ofthis standard.FIG.1 Dimension of Penetration ApparatusFIG.2 Penetration ApparatusC1712 142 5.2 The method is useful for rapid assessment of the staticsegregation resistance of self-consolidating concrete duringmixture development in the laboratory as well as pri
