1、Designation:A767/A767M16Standard Specification forZinc-Coated(Galvanized)Steel Bars for ConcreteReinforcement1This standard is issued under the fixed designation A767/A767M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of
2、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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers steel rein
3、forcing bars withprotective zinc coatings applied by immersing the properlyprepared reinforcing bars into a molten bath of zinc.NOTE1The galvanizer is identified throughout this specification asthe manufacturer.1.2 Guidelines for construction practices at the job-site arepresented in Appendix X1.1.3
4、 Guidelines for use of zinc-coated(galvanized)reinforc-ing bars with non-galvanized steel forms are presented inAppendix X2.1.4 The text of this specification references notes andfootnotes which provide explanatory material.These notes andfootnotes(excluding those in tables)shall not be considered a
5、srequirements of the specification.1.5 This specification is applicable for orders in eitherinch-pound units(as Specification A767)or SI units(asSpecification A767M).1.6 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.Within the text,theSI units are
6、shown in brackets.The values stated in eachsystem may not be exact equivalents.Therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thisspecification.2.Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for We
7、ight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete ReinforcementA780/A780M Practice for Repair of
8、Damaged and UncoatedAreas of Hot-Dip Galvanized CoatingsA996/A996M Specification for Rail-Steel and Axle-SteelDeformed Bars for Concrete ReinforcementB6 Specification for ZincB487 Test Method for Measurement of Metal and OxideCoating Thickness by Microscopical Examination ofCross SectionE376 Practic
9、e for Measuring Coating Thickness byMagnetic-Field or Eddy-Current(Electromagnetic)Test-ing Methods2.2 ACI Standard:3ACI 301 Specifications for Structural Concrete2.3 AWS Standard:4AWS D1.4 D1.4M Structural Welding CodeReinforcingSteel3.Terminology3.1 Definition of Term Specific to This Specificatio
10、n:3.1.1 lot,nall bars of one size furnished to the same steelreinforcing bar specification that have been coated within asingle production shift.4.Ordering Information4.1 Orders for zinc-coated(galvanized)bars for concretereinforcement under this specification shall include the follow-ing informatio
11、n:4.1.1 Specification for reinforcing bars to be coated(ASTMdesignation and year of issue)(5.1),4.1.2 Quantity of bars,4.1.3 Size and grade of bars,1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Subc
12、ommitteeA01.05 on Steel Reinforcement.Current edition approved Sept.1,2016.Published September 2016.Originallyapproved in 1979.Last previous edition approved in 2015 as A767/A767M 09(2015).DOI:10.1520/A0767_A0767M-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM C
13、ustomer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Concrete Institute(ACI),P.O.Box 9094,FarmingtonHills,MI 48333-9094,http:/www.concrete.org.4Available from American Welding S
14、ociety(AWS),8669 NW 36 St.,#130,Miami,FL 33166-6672,http:/www.aws.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 4.1.4 Class of coating(Class 1 or Class 2)(6.5),4.1.5 G
15、alvanizing before or after fabrication for Class 1coating(7.3),4.1.6 ASTM designation A767 A767M and year of issue.4.2 The purchaser shall have the option to specify additionalrequirements,including but not limited to,the following:4.2.1 Requirements for inspection(8.1),4.2.2 Manufacturer certificat
16、ion(10.1),and4.2.3 Other special requirements,if any.5.Materials5.1 Steel reinforcing bars to be zinc-coated(galvanized)shall conform to one of the following Specifications:A615,A706,or A996 A615M,A706M,or A996M,as specified bythe purchaser.5.2 The zinc used for coating shall be any grade thatconforms to Specification B6.6.Zinc Coating Process6.1 Reinforcing bars shall be prepared for galvanizing usingany surface cleaning process that allows the zinc to bond withthe steel,such that the galvanize