ASTM_A_934_-_A_934M_-_16.pdf

Designation:A934/A934M16Standard Specification forEpoxy-Coated Prefabricated Steel Reinforcing Bars1This standard is issued under the fixed designation A934/A934M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers deformed and plain steelreinforcing bars which prior to surface preparation are prefab-ricated and then coated with a protective fusion-bonded epoxycoating by electrostatic spray or other suitable method.1.2 Prefabricated steel reinforcing bars coated with fusion-bonded epoxy powder coating in accordance with this specifi-cation are intended to be fabricated before being coated.1.3 Organic coatings other than epoxy may be used pro-vided they meet the requirements of this specification.1.4 Requirements for epoxy coatings are contained in An-nex A1.1.5 Guidelines for application process and product testprocedures of epoxy coatings for steel reinforcing bars arepresented in Appendix X1.1.6 Guidelines for construction practices at the job-site forcoated steel reinforcing bars are presented in Appendix X2.1.7 This specification is applicable for orders in either SI(metric)units(as Specification A934M)or inch-pound unitsas Specification A934.1.8 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.1.9 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:2A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete ReinforcementA775/A775M Specification for Epoxy-Coated Steel Rein-forcing BarsA944 Test Method for Comparing Bond Strength of SteelReinforcing Bars to Concrete Using Beam-End Speci-mensA996/A996M Specification for Rail-Steel and Axle-SteelDeformed Bars for Concrete ReinforcementB117 Practice for Operating Salt Spray(Fog)ApparatusD4060 Test Method for Abrasion Resistance of OrganicCoatings by the Taber AbraserG8 Test Methods for Cathodic Disbonding of Pipeline Coat-ingsG14 Test Method for Impact Resistance of Pipeline Coatings(Falling Weight Test)G20 Test Method for Chemical Resistance of Pipeline Coat-ingsG42 Test Method for Cathodic Disbonding of PipelineCoatings Subjected to Elevated TemperaturesG62 Test Methods for Holiday Detection in Pipeline Coat-ings2.2 NACE International Standard:3RP 0287 Field Measurement of Surface Profile of AbrasiveBlast Cleaned Steel Surfaces Using a Replica Tape2.3 SSPC Specifications:4SSPC-SP 10 Near-White Blast CleaningSSPC-VIS 1 Pictorial Surface Preparation Standards forPainting Steel SurfacesSSPC-PA 2 Measurement of Dry Coating Thickness withMagnetic Gages1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05 on Steel Reinforcement.Current edition approved March 1,2016.Published March 2016.Originallyapproved in 1995.Last previous edition approved in 2013 as A934/A934M 13.DOI:10.1520/A0934_A0934M-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.3Available from NACE International(NACE),15835 Park Ten Pl.,Houston,TX77084,http:/www.nace.org.4Available from Society for Protective Coatings(SSPC),40 24th St.,6th Floor,Pittsburgh,PA 15222,http:/www.sspc.org.*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 2.4 ACI Specifications:5ACI 301 Specifications for Structural ConcreteACI 315 Details and Detailing of Concrete Reinforcement2.5 CRSI Documents:6Voluntary Certification Program for Fusion-Bonded EpoxyCoating Applicator Plants3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 conversion coatingpreparation of the blast-cleanedmetal surface prior to coating application that is designed topretreat the metal to promote coating adhesion,reduce metalcoating reactions,improve corrosion resistance,and increaseblister resistance.3.1.2 disbondingloss of adhesion between the fusion-bonded epoxy coating and the steel reinforcing bar.3.1.3 fusion-b