A0775_A0775M-06涂环氧树脂的钢筋钢棒.pdf
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1、Designation:A 775/A 775M 06Standard Specification forEpoxy-Coated Steel Reinforcing Bars1This standard is issued under the fixed designationA775/A775M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number
2、 in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This specification covers deformed and plain steelreinforcing
3、 bars with protective epoxy coating applied by theelectrostatic spray method.NOTE1The coating applicator is identified throughout this specifica-tion as the manufacturer.1.2 Other organic coatings may be used provided they meetthe requirements of this specification.1.3 Requirements for coatings are
4、contained in Annex A1.1.4 Guidelines for construction practices at the job-site arepresented in Appendix X1.1.5 This specification is applicable for orders in either SIunits(as Specification A 775M)or inch-pound units as Speci-fication A 775.1.6 The values stated in either SI or inch-pound units are
5、 tobe regarded as standard.Within the text,the inch-pound unitsare shown in brackets.The values stated in each system are notexact equivalents;therefore,each system must be used inde-pendently of the other,except as specifically noted in Table 1.Combining values from the two systems may result in no
6、ncon-formance with this specification.1.7 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 limit
7、ations prior to use.2.Referenced Documents2.1 ASTM Standards:2A 615/A 615MSpecification for Deformed and PlainCarbon-Steel Bars for Concrete ReinforcementA 706/A 706MSpecification for Low-Alloy Steel De-formed and Plain Bars for Concrete ReinforcementA 944 Test Method for Comparing Bond Strength of
8、SteelReinforcing Bars to Concrete Using Beam-End SpecimensA 996/A 996M Specification for Rail-Steel and Axle-SteelDeformed Bars for Concrete ReinforcementB 117 Practice for Operating Salt Spray(Fog)ApparatusD 4060 Test Method for Abrasion Resistance of OrganicCoatings by Taber AbrasorG 8 Test Method
9、s for Cathodic Disbonding of PipelineCoatingsG 14 Test Method for Impact Resistance of Pipeline Coat-ings(Falling Weight Test)G 20 Test Method for Chemical Resistance of PipelineCoatingsG 62 Test Methods for Holiday Detection in Pipeline Coat-ings2.2NACE International Standard:RP-287-87 Field Measur
10、ement of Surface Profile of Abra-sive Blast-Cleaned Steel Surface Using a Replica Tape32.3Society for Protective Coatings Specifications:SSPC-SP 10 Near-White Blast Cleaning41This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel,and Related Alloys and is the dir
11、ect responsibility of SubcommitteeA01.05 on Steel Reinforcement.Current edition approved May 1,2006.Published May 2006.Originallyapproved in 1981.Last previous edition approved in 2004 as A 775/A 775M 04a.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Serv
12、ice at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from NACE International,1440 South Creek,Houston,TX 77084.4Available from Society for Protective Coatings,40 24th Street,Pittsburgh,PA15222.TABLE 1Ben
13、d Test RequirementsA 615M,A 706Mor A 996MA 615,A 706or A 996MBarNo.MandrelDiameter,mmABarNo.MandrelDiameter,in.ABendAngle(AfterRebound,degrees)Time toCompletionmax,s107533180151310044180151612555180151915066180152217577180452520088180452923099180453225010101804536280111118045434301417904557580182390
14、45AMandrel diameters specified for similar size(shown on the same line)metricand inch-pound bars may be interchanged.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.SSPC-VI
15、S 1 Pictorial Surface Preparation Standards forPainting Steel Surfaces4SSPC-PA 2 Measurement of Dry Coating Thickness withMagnetic Gages42.4Concrete Reinforcing Steel Institute:“Voluntary Certification Program for Fusion Bonded EpoxyCoating Applicator Plants”52.5American Concrete Institute Standard:
16、ACI 301 Specifications for Structural Concrete63.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 conversion coating,na preparation of the blast-cleaned steel surface prior to coating application that isdesigned to pretreat the metal to promote coating adhesion,reduce metal-coatin
17、g reactions,improve corrosion resistance,and increase blister resistance.3.1.2 disbonding,nloss of adhesion between the fusion-bonded epoxy coating and the steel reinforcing bar.3.1.3 fusion-bonded epoxy coating,na product containingpigments,thermosetting epoxy resins,crosslinking agents,andother ad
18、ditives,which is applied in the form of a powder ontoa clean,heated metallic substrate and fuses to form a continu-ous barrier coating.3.1.4 holiday,na discontinuity in a coating that is notdiscernible to a person with normal or corrected vision.3.1.5 patching material,na liquid two-part epoxy coati
19、ngused to repair damaged or uncoated areas.3.1.6 wetting agent,na material that lowers the surfacetension of water allowing it to penetrate more effectively intosmall discontinuities in the coating giving a more accurateindication of the holiday count.4.Ordering Information4.1 It shall be the respon
20、sibility of the purchaser to specifyall requirements that are necessary for the coated steel rein-forcing bars under this specification.Such requirements to beconsidered include,but are not limited to,the following:4.1.1 Reinforcing bar specification and year of issue,4.1.2 Quantity of bars,4.1.3 Si
21、ze and grade of bars,4.1.4 Requirements for the powder coating and provision oftest data(5.2 and 5.3),4.1.5 Requirements for patching material(5.4),4.1.6 Quantity of patching material,4.1.7 Specific requirements for test frequency(9.1),4.1.8 Whether a report on tests performed on the coatedsteel rei
22、nforcing bars being furnished is required(8.4.1 and 14)4.1.9 Additional specimens to be provided to the purchaserfor testing from the coated steel reinforcing bars being fur-nished(12.1),and4.1.10 Manufacturer qualification and certification require-ments(if any).NOTE2It is recommended that the coat
23、ing application procedures andprocesses be audited by an independent certification program for epoxycoating applicator plants such as that provided by the Concrete Reinforc-ing Steel Institute,or equivalent.NOTE3A typical ordering description is as follows:Deformed Grade420 bars to ASTM A 615M_;6000
24、 m,No.19,12 m long in securedlifts with sufficient spacers or padding,or both;epoxy-coated to ASTMA 775M_;including written certifications for the powder coatingand coated bars,and 1 L of patching material.Deformed Grade 60 bars to ASTM A 615 _;20 000 ft,No.6,40ft 0 in.long in secured lifts with suf
25、ficient spacers or padding,or both;epoxy-coated to ASTM A 775_;including written certifications forthe powder coating and coated bars,and 1 qt of patching material.5.Materials5.1 Steel reinforcing bars to be coated shall meet therequirements of one of the following specifications:A 615M,A 706M,or A
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