ASTM_D_7913_-_D_7913M_-_14.pdf

Designation:D7913/D7913M14Standard Test Method forBond Strength of Fiber-Reinforced Polymer MatrixComposite Bars to Concrete by Pullout Testing1This standard is issued under the fixed designation D7913/D7913M;the number immediately following the designation indicates theyear of original adoption or,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.Scope1.1 This test method covers the determination of the bondstrength of fiber-reinforced polymer(FRP)composite barsused as reinforcing bars or pre-stressing tendons in concrete.1.2 Two procedures for casting test specimens are provided.The first procedure aligns the bar with the concrete castingdirection.The second procedure aligns the bars transverse tothe concrete casting direction.1.3 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-conformancewith the standard.1.4 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 use.2.Referenced Documents2.1 ASTM Standards:2A944 Test Method for Comparing Bond Strength of SteelReinforcing Bars to Concrete Using Beam-End Speci-mensC33/C33M Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cylin-drical Concrete SpecimensC143/C143M Test Method for Slump of Hydraulic-CementConcreteC150/C150M Specification for Portland CementC192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC293/C293M Test Method for Flexural Strength of Concrete(Using Simple Beam With Center-Point Loading)C511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,and Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC617/C617M Practice for Capping Cylindrical ConcreteSpecimensD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD3878 Terminology for Composite MaterialsD5229/D5229M Test Method for MoistureAbsorption Prop-erties and Equilibrium Conditioning of Polymer MatrixComposite MaterialsD7205/D7205M Test Method for Tensile Properties of FiberReinforced Polymer Matrix Composite BarsD7705 Test Method for Alkali Resistance of Fiber Rein-forced Polymer(FRP)Matrix Composite Bars used inConcrete ConstructionE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical TestingE83 Practice for Verification and Classification of Exten-someter SystemsE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE456 Terminology Relating to Quality and StatisticsE1012 Practice for Verification of Testing Frame and Speci-men Alignment Under Tensile and Compressive AxialForce ApplicationF2203 Test Method for Linear Measurement Using PrecisionSteel Rule3.Terminology3.1 Terminology in D3878 defines terms relating to highmodulus fibers and their composites.Terminology in D883defines terms relating to plastics.Terminology in E6 definesterms relating to mechanical testing.Terminology in E456 andin Practice E122 define terms relating to statistics and theselection of sample sizes.In the event of a conflict betweenterms,Terminology in D3878 shall have precedence over theother terminology standards.1This test method is under the jurisdiction of ASTM Committee D30 onComposite Materials and is the direct responsibility of Subcommittee D30.10 onComposites for Civil Structures.Current edition approved Aug.15,2014.Published December 2014.DOI:10.1520/D7913_D7913M-142For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2 Definitions of Terms Specific to This Standard:3.2.1 anchor,na protective device placed on one end of abar,between the bar and the grips of the tensile testingmachine,to prevent grip-induced damage.Usually used onbars with irregular surfaces.D7205/D7205M3.2.2 bar,na linear element,often with surface undula-tions or a coating of particles that promote mechanical inter-lock with concrete.3.2.3 bonded length,nthe length of the test bar that is incontact with concrete.3.2.4 effective circumference,na geometric value repre-senting the circumference of a circle which has an enclosedarea equal to the nominal cross-sec