ASTM_C_937_-_16.pdf

Designation:C93716Standard Specification forGrout Fluidifier for Preplaced-Aggregate Concrete1This standard is issued under the fixed designation C937;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers fluidifier for grout used forpreplaced-aggregate(PA)concrete.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 The following precautionary caveat pertains only to thetest method portion,Section 8,of this standard:This standarddoes not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1 ASTM Standards:2C33/C33M Specification for Concrete AggregatesC125 Terminology Relating to Concrete and Concrete Ag-gregatesC150/C150M Specification for Portland CementC219 Terminology Relating to Hydraulic CementC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC637 Specification for Aggregates for Radiation-ShieldingConcreteC938 Practice for Proportioning Grout Mixtures forPreplaced-Aggregate ConcreteC939/C939M Test Method for Flow of Grout for Preplaced-Aggregate Concrete(Flow Cone Method)C940 Test Method for Expansion and Bleeding of FreshlyMixed Grouts for Preplaced-Aggregate Concrete in theLaboratoryC941 Test Method for Water Retentivity of Grout Mixturesfor Preplaced-Aggregate Concrete in the LaboratoryC942 Test Method for Compressive Strength of Grouts forPreplaced-Aggregate Concrete in the LaboratoryC953 Test Method for Time of Setting of Grouts forPreplaced-Aggregate Concrete in the Laboratory3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method,referto Terminologies C125 and C219.4.Ordering Information4.1 The purchaser shall specify the material desired as“grout fluidifier for preplaced-aggregate concrete.”The mate-rial shall meet the requirements of this specification.5.Materials5.1 Grout ingredients shall conform to the following re-quirements:5.1.1 Portland cement shall meet the requirements of Speci-fication C150/C150M for the type to be used.5.1.2 Pozzolan shall meet the requirements of SpecificationC618.5.1.3 Fine aggregate shall meet the requirements of Speci-fication C33/C33M except that grading shall conform toSpecification C637,Table number 2,Grading 1 for FineAggregate.6.Physical Requirements6.1 The fluidifier,when tested in grout as specified herein,shall conform to the requirements of Table 1.7.Sampling7.1 The test sample of fluidifier shall have a mass of at least225 g and shall be representative of the material supplied.Iffeasible,the test sample shall be composited from grab samplestaken from not fewer than four packages selected at random.8.Test Methods8.1 Summary of MethodPhysical properties of grout con-taining fluidifier are determined and compared with corre-sponding properties of grout made without fluidifier.1This specification is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.41 on Hydraulic Cement Grouts.Current edition approved Feb.1,2016.Published March 2016.Originallyapproved in 1980.Last previous edition approved in 2010 as C93710.DOI:10.1520/C0937-16.2For 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 States1 8.2 Significance and UseThe effects of adding fluidifier toa standard grout mixture are determined in order to evaluate itsability to reduce mixing water,prevent early stiffening,holdsolid constituents in suspension,produce controlled expansionprior to initial setting,and maintain or increase compressivestrength.8.3 Procedure:8.3.1 Have all grout materials including mixing water at23.0 6 2.0C at the start of the test.8.3.2 Maintain the laboratory and curing room at 23.0 62.0C at all times during testing.8.3.3 Grout Preparation:8.3.3.1 Proportion two grout mixtures,one a control mix-ture without and one a test mixture with the grout fluidifierunder consideration,each containing equal parts,by mass,ofcementitious material and fine aggregate,with sufficient waterto produce a grout efflux time by Test Method C939/C939M of21 6 2 s.The c