ASTM A934/A934M-22

Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars

ABSTRACT
This specification covers deformed and plain steel reinforcing bars. Steel samples shall be blast cleaned and shall be coated with a protective fusion-bonded epoxy coating by electrostatic spray or other suitable method. The steel specimens shall undergo deformation test, holiday checks, bending tests, and cathodic disbondment test. The steels materials shall conform to the required values of coating thickness, continuity, flexibility, adhesion.
SCOPE
1.1 This specification covers deformed and plain steel reinforcing bars which prior to surface preparation are prefabricated and then coated with a protective fusion-bonded epoxy coating by electrostatic spray or other suitable method.  
1.2 Prefabricated steel reinforcing bars coated with fusion-bonded epoxy powder coating in accordance with this specification are intended to be fabricated before being coated.  
1.3 Organic coatings other than epoxy may be used provided they meet the requirements of this specification.  
1.4 Requirements for epoxy coatings are contained in Annex A1.  
1.5 Requirements for patching material are contained in Annex A2 in Specification A775/A775M.  
1.6 Guidelines for application process and product test procedures of epoxy coatings for steel reinforcing bars are presented in Appendix X1.  
1.7 Guidelines for construction practices at the job-site for coated steel reinforcing bars are presented in Appendix X2.  
1.8 This specification is applicable for orders in either inch-pound units (as Specification A934) or SI [metric] units [as Specification A934M].  
1.9 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.11 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2022
• ICS: 77.140.15 - Steels for reinforcement of concrete
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.05 - Steel Reinforcement

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A934/A934M −22
Standard Specification for
1
Epoxy-Coated Prefabricated Steel Reinforcing Bars
This standard is issued under the fixed designationA934/A934M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.11 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This specification covers deformed and plain steel
ization established in the Decision on Principles for the
reinforcing bars which prior to surface preparation are prefab-
Development of International Standards, Guides and Recom-
ricated and then coated with a protective fusion-bonded epoxy
mendations issued by the World Trade Organization Technical
coating by electrostatic spray or other suitable method.
Barriers to Trade (TBT) Committee.
1.2 Prefabricated steel reinforcing bars coated with fusion-
2. Referenced Documents
bonded epoxy powder coating in accordance with this specifi-
2
cation are intended to be fabricated before being coated.
2.1 ASTM Standards:
A615/A615MSpecificationforDeformedandPlainCarbon-
1.3 Organic coatings other than epoxy may be used pro-
Steel Bars for Concrete Reinforcement
vided they meet the requirements of this specification.
A706/A706MSpecification for Deformed and Plain Low-
1.4 Requirements for epoxy coatings are contained in An-
Alloy Steel Bars for Concrete Reinforcement
nex A1.
A775/A775MSpecification for Epoxy-Coated Steel Rein-
1.5 Requirements for patching material are contained in
forcing Bars
Annex A2 in Specification A775/A775M.
A944Test Method for Comparing Bond Strength of Steel
Reinforcing Bars to Concrete Using Beam-End Speci-
1.6 Guidelines for application process and product test
mens
procedures of epoxy coatings for steel reinforcing bars are
A996/A996MSpecification for Rail-Steel and Axle-Steel
presented in Appendix X1.
Deformed Bars for Concrete Reinforcement
1.7 Guidelines for construction practices at the job-site for
A1035/A1035M Specification for Deformed and Plain,
coated steel reinforcing bars are presented in Appendix X2.
Low-Carbon, Chromium, Steel Bars for Concrete Rein-
1.8 This specification is applicable for orders in either
forcement
inch-pound units (as Specification A934) or SI [metric] units
B117Practice for Operating Salt Spray (Fog) Apparatus
[as Specification A934M].
D4060Test Method for Abrasion Resistance of Organic
Coatings by the Taber Abraser
1.9 The values stated in either inch-pound units or SI units
E2937Guide for Using Infrared Spectroscopy in Forensic
are to be regarded separately as standard. The values stated in
Paint Examinations
each system may not be exact equivalents; therefore, each
G8Test Methods for Cathodic Disbonding of Pipeline Coat-
system shall be used independently of the other. Combining
ings
values from the two systems may result in non-conformance
G14TestMethodforImpactResistanceofPipelineCoatings
with the standard.
(Falling Weight Test)
1.10 This standard does not purport to address all of the
G20Test Method for Chemical Resistance of Pipeline Coat-
safety concerns, if any, associated with its use. It is the
ings
responsibility of the user of this standard to establish appro-
G42Test Method for Cathodic Disbonding of Pipeline
priate safety, health, and environmental practices and deter-
Coatings Subjected to Elevated Temperatures
mine the applicability of regulatory limitations prior to use.
G62Test Methods for Holiday Detection in Pipeline Coat-
ings
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
2
A01.05 on Steel Reinforcement. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2022. Published November 2022. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2019 as A934/A934M – 19. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0934_A0934M-22. the ASTM website.
*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
1

---------------------- Page: 1 ----------------------
A934/A934M − 22
3
2.2 NACE International Standard: 4.1.2 Quantity of bars,
RP0287Field Measurement of Surface Profile of A
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A934/A934M − 19 A934/A934M − 22
Standard Specification for
1
Epoxy-Coated Prefabricated Steel Reinforcing Bars
This standard is issued under the fixed designation A934/A934M; the number immediately following the designation indicates the year
of 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 steel reinforcing bars which prior to surface preparation are prefabricated and
then coated with a protective fusion-bonded epoxy coating by electrostatic spray or other suitable method.
1.2 Prefabricated steel reinforcing bars coated with fusion-bonded epoxy powder coating in accordance with this specification are
intended to be fabricated before being coated.
1.3 Organic coatings other than epoxy may be used provided they meet the requirements of this specification.
1.4 Requirements for epoxy coatings are contained in Annex A1.
1.5 Requirements for patching material are contained in Annex A2 in Specification A775/A775M.
1.6 Guidelines for application process and product test procedures of epoxy coatings for steel reinforcing bars are presented in
Appendix X1.
1.7 Guidelines for construction practices at the job-site for coated steel reinforcing bars are presented in Appendix X2.
1.8 This specification is applicable for orders in either inch-pound units (as Specification A934) or SI [metric] units [as
Specification A934M].
1.9 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.11 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.05
on Steel Reinforcement.
Current edition approved June 1, 2019Sept. 1, 2022. Published June 2019November 2022. Originally approved in 1995. Last previous edition approved in 20162019 as
A934/A934M – 16.19. DOI: 10.1520/A0934_A0934M-19.10.1520/A0934_A0934M-22.
*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
1

---------------------- Page: 1 ----------------------
A934/A934M − 22
2. Referenced Documents
2
2.1 ASTM Standards:
A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
A775/A775M Specification for Epoxy-Coated Steel Reinforcing Bars
A944 Test Method for Comparing Bond Strength of Steel Reinforcing Bars to Concrete Using Beam-End Specimens
A996/A996M Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement
A1035/A1035M Specification for Deformed and Plain, Low-Carbon, Chromium, Steel Bars for Concrete Reinforcement
B117 Practice for Operating Salt Spray (Fog) Apparatus
D4060 Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
E2937 Guide for Using Infrared Spectroscopy in Forensic Paint Examinations
G8 Test Methods for Cathodic Disbonding of Pipeline Coatings
G14 Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
G20 Test Method for Chemical Resistance of Pipeline Coatings
G42 Test Method for Cathodic Disbonding of Pipeline Coatings Subjected to Elevated Temperatures
G62 Test Methods for Holiday Detection in Pipeline Coatings
3
2.2 NACE International Standard:
RP 0287 Field Measurement of Surface Profile of Abrasive Blast Cleaned Steel Surfaces Using a Replica Tape
4
2.3 SSPC Specificatio
...