ASTM A934/A934M-13
(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 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 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. 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.
1.9 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.
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Designation:A934/A934M −13
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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers deformed and plain steel
A615/A615MSpecificationforDeformedandPlainCarbon-
reinforcing bars which prior to surface preparation are prefab-
Steel Bars for Concrete Reinforcement
ricated and then coated with a protective fusion-bonded epoxy
A706/A706MSpecification for Deformed and Plain Low-
coating by electrostatic spray or other suitable method.
Alloy Steel Bars for Concrete Reinforcement
1.2 Prefabricated steel reinforcing bars coated with fusion-
A775/A775MSpecification for Epoxy-Coated Steel Rein-
bonded epoxy powder coating in accordance with this specifi- forcing Bars
cation are intended to be fabricated before being coated. A944Test Method for Comparing Bond Strength of Steel
Reinforcing Bars to Concrete Using Beam-End Speci-
1.3 Organic coatings other than epoxy may be used pro-
mens
vided they meet the requirements of this specification.
A996/A996MSpecification for Rail-Steel and Axle-Steel
Deformed Bars for Concrete Reinforcement
1.4 Requirements for epoxy coatings are contained in An-
B117Practice for Operating Salt Spray (Fog) Apparatus
nex A1.
D4060Test Method for Abrasion Resistance of Organic
1.5 Guidelines for application process and product test
Coatings by the Taber Abraser
procedures of epoxy coatings for steel reinforcing bars are
G8Test Methods for Cathodic Disbonding of Pipeline Coat-
presented in Appendix X1. ings
G14TestMethodforImpactResistanceofPipelineCoatings
1.6 Guidelines for construction practices at the job-site for
(Falling Weight Test)
coated steel reinforcing bars are presented in Appendix X2.
G20Test Method for Chemical Resistance of Pipeline Coat-
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-
1.8 The values stated in either SI units or inch-pound units
ings
are to be regarded separately as standard. The values stated in 3
2.2 NACE International Standard:
each system may not be exact equivalents; therefore, each
RP0287Field Measurement of Surface Profile of Abrasive
system shall be used independently of the other. Combining
Blast Cleaned Steel Surfaces Using a Replica Tape
values from the two systems may result in non-conformance
4
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
SSPC-PA2Measurement of Dry Coating Thickness with
responsibility of the user of this standard to establish appro-
Magnetic Gages
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
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 June 1, 2013. Published June 2013. Originally 77084–4906.
4 th
approved in 1995. Last previous edition approved in 2007 as A934/A934M – 07. Available fromThe Society for Protective Coatings, 40 24 St., Pittsburgh, PA
DOI: 10.1520/A0934_A0934M-13. 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−13
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NOTE 1—Atypical ordering description is as follows: Deformed Grade
2.4 American Concrete Institute Specifications:
420 bars to ASTM A615M–____; 6000 m, No. 19; cut to specified
ACI301Specifications for Structural Concrete
lengths and fabricated prior to coating; epoxy-coated toASTM A934M–
ACI315Details and Detailing of Concrete Reinforcement
____; in
...
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 − 07 A934/A934M − 13
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 formulations powder coating in accordance with this
specification are not intended to be bent or rebent.fabricated before being coated.
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 A775/A775M 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. 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.
1.9 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 Carbon-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) 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 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 Sept. 1, 2007June 1, 2013. Published October 2007June 2013. Originally approved in 1995. Last previous edition approved in 20042007 as
A934/A934M–04. DOI: 10.1520/A0934_A0934M-07. – 07. DOI: 10.1520/A0934_A0934M-13.
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 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
1
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A934/A934M − 13
3
2.2 NACE International Standard:
RP 0287 Field Measurement of Surface Profile of Abrasive Blast Cleaned Steel Surfaces Using a Repl
...
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