ASTM A934/A934M-07
(Specification)Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
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 formulations in accordance with this specification are not intended to be bent or rebent.Note 1
Experience has shown epoxy-coated prefabricated steel reinforcing bars have limited capability to be successfully field bent or rebent (see ). If the construction project requires epoxy-coated steel reinforcing bars that must be able to sustain field bending or rebending, the use of coated bars conforming to Specification A 775/A 775M should be considered.
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 Guidelines for application process and product test procedures of epoxy coatings for steel reinforcing bars are presented in Appendix X1.
1.6 Guidelines for construction practices at the job-site for coated steel reinforcing bars are presented in Appendix X2.
1.7 This specification is applicable for orders in either SI (metric) units (as Specification A 934M) or inch-pound units [as Specification A 934].
1.8 &combined-units;
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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:A934/A934M −07
StandardSpecification 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* priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This specification covers deformed and plain steel
reinforcing bars which prior to surface preparation are prefab-
2. Referenced Documents
ricated and then coated with a protective fusion-bonded epoxy
2
2.1 ASTM Standards:
coating by electrostatic spray or other suitable method.
A615/A615MSpecificationforDeformedandPlainCarbon-
1.2 Prefabricated steel reinforcing bars coated with fusion-
Steel Bars for Concrete Reinforcement
bonded epoxy formulations in accordance with this specifica-
A706/A706MSpecification for Low-Alloy Steel Deformed
tion are not intended to be bent or rebent.
and Plain Bars for Concrete Reinforcement
NOTE 1—Experience has shown epoxy-coated prefabricated steel rein- A775/A775MSpecification for Epoxy-Coated Steel Rein-
forcing bars have limited capability to be successfully field bent or rebent
forcing Bars
(see 9.3.1). If the construction project requires epoxy-coated steel rein-
A944Test Method for Comparing Bond Strength of Steel
forcing bars that must be able to sustain field bending or rebending, the
Reinforcing Bars to Concrete Using Beam-End Speci-
use of coated bars conforming to Specification A775/A775M should be
mens
considered.
A996/A996MSpecification for Rail-Steel and Axle-Steel
1.3 Organic coatings other than epoxy may be used pro-
Deformed Bars for Concrete Reinforcement
vided they meet the requirements of this specification.
B117Practice for Operating Salt Spray (Fog) Apparatus
1.4 Requirements for epoxy coatings are contained in An-
D4060Test Method for Abrasion Resistance of Organic
nex A1.
Coatings by the Taber Abraser
G8Test Methods for Cathodic Disbonding of Pipeline Coat-
1.5 Guidelines for application process and product test
ings
procedures of epoxy coatings for steel reinforcing bars are
G14TestMethodforImpactResistanceofPipelineCoatings
presented in Appendix X1.
(Falling Weight Test)
1.6 Guidelines for construction practices at the job-site for
G20Test Method for Chemical Resistance of Pipeline Coat-
coated steel reinforcing bars are presented in Appendix X2.
ings
1.7 This specification is applicable for orders in either SI
G42Test Method for Cathodic Disbonding of Pipeline
(metric) units (as Specification A934M) or inch-pound units
Coatings Subjected to Elevated Temperatures
[as Specification A934].
G62Test Methods for Holiday Detection in Pipeline Coat-
ings
1.8 The values stated in either SI units or inch-pound units
3
2.2 NACE International Standard:
are to be regarded separately as standard. The values stated in
RP0287Field Measurement of Surface Profile of Abrasive
each system may not be exact equivalents; therefore, each
Blast Cleaned Steel Surfaces Using a Replica Tape
system shall be used independently of the other. Combining
4
values from the two systems may result in non-conformance 2.3 Society for Protective Coatings Specifications:
with the standard. SSPC-SP10Near-White Blast Cleaning
SSPC-VIS1Pictorial Surface Preparation Standards for
1.9 This standard does not purport to address all of the
Painting Steel Surfaces
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee the ASTM website.
3
A01.05 on Steel Reinforcement. Available from NACE International, 1440 South Creek Dr., Houston, TX
Current edition approved Sept. 1, 2007. Published October 2007. Originally 77084–4906.
4 th
approved in 1995. Last previous edition approved in 2004 as A934/A934M–04. Available fromThe Society for Protective Coatings, 40 24 St., Pittsburgh, PA
DOI: 10.1520/A0934_A0934M-07. 15222–4656.
*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
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A934/A934M−07
SSPC-PA2Measurement of Dry Coating Thickness with 4.1.9 Met
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A 934/A 934M–04 Designation: A934/A934M – 07
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*
1.1 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 formulations in accordance with this specification are
not intended to be bent or rebent.
NOTE 1—Experience has shown epoxy-coated prefabricated steel reinforcing bars have limited capability to be successfully field bent or rebent (see
9.3.1). If the construction project requires epoxy-coated steel reinforcing bars that must be able to sustain field bending or rebending, the use of coated
bars conforming to Specification A 775A775/A775M/A 775M should be considered.
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 Guidelines for application process and product test procedures of epoxy coatings for steel reinforcing bars are presented in
Appendix X1.
1.6 Guidelines for construction practices at the job-site for coated 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 units [as
Specification A934].
1.8 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the
inch-pound units are shown in brackets. The values stated in the two systems are each system may not be exact equivalents:;
therefore, each system mustshall be used independently of the other. Combining values from the two systems may result in
non-conformance with this specification. the standard.
1.9 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A615/A615M Specification for Deformed and Plain Billet-SteelCarbon-Steel Bars for Concrete Reinforcement
A706/A706M Specification for Low-Alloy Steel Deformed and Plain 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
B117 Practice for Operating Salt Spray (Fog) Testing Apparatus
D4060 Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
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
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel,Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.05 on Steel Reinforcement.
Current edition approved March 1, 2004. Published April 2004. Originally approved in 1995. Last previous edition approved in 2003 as A 934/A 934M–03.
Current edition approved Sept. 1, 2007. Published October 2007. Originally approved in 1995. Last previous edition approved in 2004 as A934/A934M–04. DOI:
10.1520/A0934_A0934M-07.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on 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.
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