ASTM A1078/A1078M-22

Standard Specification for Epoxy-Coated Steel Dowels for Concrete Pavement

SCOPE
1.1 This specification covers plain steel dowel bars with protective fusion-bonded epoxy coating for use in concrete pavements.  
1.2 This specification is applicable for orders in either inch-pound units (as Specification A1078) or in SI units (as Specification A1078M).  
1.3 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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 this specification.  
1.4 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.
Note 1: The coating applicator is identified throughout this specification as the manufacturer.  
1.5 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: 21.060.99 - Other fasteners
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.05 - Steel Reinforcement

Relations

• Refers: ASTM D4417-19 - Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
• Effective Date: 01-Dec-2019
• Refers: ASTM A934/A934M-16 - Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
• Effective Date: 01-Mar-2016
• Refers: ASTM A615/A615M-15 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 01-Apr-2015
• Refers: ASTM A615/A615M-14 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 01-Apr-2014
• Refers: ASTM A775/A775M-07b(2014) - Standard Specification for Epoxy-Coated Steel Reinforcing Bars
• Effective Date: 01-Mar-2014
• Refers: ASTM A615/A615M-13 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 01-Oct-2013
• Refers: ASTM A934/A934M-13 - Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
• Effective Date: 01-Jun-2013
• Refers: ASTM A615/A615M-12 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 01-Mar-2012
• Refers: ASTM D4417-11 - Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
• Effective Date: 01-Nov-2011
• Refers: ASTM A1055/A1055M-10 - Standard Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
• Effective Date: 01-Dec-2010
• Refers: ASTM A1055/A1055M-10e1 - Standard Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
• Effective Date: 01-Dec-2010
• Refers: ASTM A615/A615M-09b - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 15-Nov-2009
• Refers: ASTM A615/A615M-09a - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 01-Oct-2009
• Refers: ASTM A615/A615M-09 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• Effective Date: 01-May-2009
• Refers: ASTM A1055/A1055M-08ae1 - Standard Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
• Effective Date: 01-Oct-2008

Overview

ASTM A1078/A1078M-22, published by ASTM International, is the Standard Specification for Epoxy-Coated Steel Dowels for Concrete Pavement. This standard addresses requirements for plain steel dowel bars coated with a protective fusion-bonded epoxy coating, specifically designed for use in concrete pavements. The document provides guidelines for materials, coating application, handling, inspection, and testing to help ensure the durability and performance of steel dowels embedded in concrete, particularly in environments exposed to moisture, deicing chemicals, or corrosive conditions.

Relevant for manufacturers, contractors, engineers, and quality assurance professionals in the infrastructure and construction sectors, ASTM A1078/A1078M-22 supports optimal joint performance in concrete pavements by minimizing corrosion and maximizing dowel durability.

Key Topics

• Material Requirements:

  • Specification covers plain steel dowel bars, typically conforming to ASTM A615/A615M.
  • Offers flexibility in units (inch-pound via A1078 or SI via A1078M) with standardized reporting in both.

• Epoxy Coating:

  • Bars are protected with a fusion-bonded epoxy coating to enhance corrosion resistance.
  • Two types of coatings are recognized (Type 1 and Type 2) with details referencing ASTM A775/A775M, A934/A934M, and A1055/A1055M.

• Surface Preparation:

  • Steel must be abrasive blast-cleaned to near-white metal (SSPC-SP 10) and meet surface profile requirements before coating.
  • Contaminated materials or surfaces (oil, salt, paint) are rejected.

• Coating Application and Quality Control:

  • Coating must be applied shortly after surface preparation to avoid oxidation.
  • Specifies measurement methods for coating thickness (SSPC-PA 2).
  • Coating continuity and adhesion are verified through standardized tests, including cathodic disbondment.

• Handling, Storage, and Inspection:

  • Coated dowels require padded handling and storage to prevent damage.
  • Comprehensive inspection protocols and patching requirements for minor coating damage.
  • All repairs must use approved patching materials compatible with concrete.

Applications

ASTM A1078/A1078M-22 is critical in:

• Highway and airport concrete pavements: Providing durable, corrosion-resistant dowel bars for load transfer across pavement joints.
• Urban infrastructure: Used in roads, parking areas, and industrial paving to extend pavement lifecycle and minimize maintenance.
• Bridges and heavy-duty pavements: Where exposure to salts and chemicals is high, the epoxy-coated dowels significantly reduce long-term corrosion risks.

Benefits include:

• Improved joint performance and alignment in concrete pavement.
• Extended service life due to superior corrosion resistance.
• Reduced maintenance costs associated with dowel replacement and joint repairs.

Related Standards

ASTM A1078/A1078M-22 is closely aligned with several other standards that address steel reinforcing materials and coating systems, such as:

• ASTM A615/A615M - Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• ASTM A775/A775M - Epoxy-Coated Steel Reinforcing Bars
• ASTM A934/A934M - Epoxy-Coated Prefabricated Steel Reinforcing Bars
• ASTM A1055/A1055M - Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
• ASTM D4417 - Field Measurement of Surface Profile of Blast Cleaned Steel
• SSPC-PA 2 - Measurement of Dry Coating Thickness with Magnetic Gauges
• SSPC-SP 10 - Near-White Blast Cleaning

These related standards reinforce best practices for steel bar preparation, coating, inspection, and use in reinforced concrete applications.

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Keywords: ASTM A1078, epoxy-coated steel dowels, concrete pavement, fusion-bonded epoxy, dowel bar corrosion protection, ASTM concrete reinforcement standards, pavement joint durability, surface preparation, coating thickness, infrastructure longevity.

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: A1078/A1078M −22
Standard Specification for
Epoxy-Coated Steel Dowels for Concrete Pavement
This standard is issued under the fixed designation A1078/A1078M; 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* A934/A934M Specification for Epoxy-Coated Prefabricated
Steel Reinforcing Bars
1.1 This specification covers plain steel dowel bars with
A1055/A1055M Specification for Zinc and Epoxy Dual-
protective fusion-bonded epoxy coating for use in concrete
Coated Steel Reinforcing Bars
pavements.
D4417 Test Methods for Field Measurement of Surface
1.2 This specification is applicable for orders in either
Profile of Blast Cleaned Steel
inch-pound units (as Specification A1078) or in SI units (as
2.2 Society for Protective Coatings Specifications:
Specification A1078M).
SSPC-PA 2 Measurement of Dry Coating Thickness with
1.3 The values stated in either inch-pound or SI units are to
Magnetic Gauges
be regarded separately as standard.Within the text, the SI units
SSPC-SP 10 Near-White Blast Cleaning
are shown in brackets. The values stated in each system may
SSPC-VIS 1 Pictorial Surface Preparation Standards for
not be exact equivalents; therefore, each system shall be used
Painting Steel Surfaces
independently of the other. Combining values from the two
2.3 Concrete Reinforcing Steel Institute Documents:
systems may result in non-conformance with this specification.
CRSI Voluntary Certification Program for Fusion Bonded
1.4 This standard does not purport to address all of the
Epoxy Coating Applicator Plants
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
3.1 Definitions of Terms Specific to This Standard:
mine the applicability of regulatory limitations prior to use.
3.1.1 epoxy powder coating, n—a fusion-bonded epoxy
NOTE 1—The coating applicator is identified throughout this specifica-
coating product containing pigments, thermosetting epoxy
tion as the manufacturer.
resins, cross-linking agents, and other additives, which is
1.5 This international standard was developed in accor-
applied in the form of a powder onto a clean, heated metallic
dance with internationally recognized principles on standard-
substrate and fuses to form a continuous barrier coating.
ization established in the Decision on Principles for the
3.1.2 final coat, n—the last application of the Type 1 or
Development of International Standards, Guides and Recom-
Type 2 coating.
mendations issued by the World Trade Organization Technical
3.1.3 holiday, n—discontinuity in a coating that is not
Barriers to Trade (TBT) Committee.
discernible to a person with normal or corrected vision.
2. Referenced Documents
3.1.4 patching material, n—liquid two-part epoxy coating
2.1 ASTM Standards:
used to repair damaged coating and to coat uncoated areas on
A615/A615M SpecificationforDeformedandPlainCarbon-
the surface of a coated bar.
Steel Bars for Concrete Reinforcement
3.1.5 plain bar, n—steel bar without protrusions.
A775/A775M Specification for Epoxy-Coated Steel Rein-
3.1.6 pretreatment, n—a preparation of the blast-cleaned
forcing Bars
steel surface prior to coating application that is formulated to
pre-treat the metal to promote coating adhesion, reduce metal/
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
coating reactions, improve corrosion resistance, and increase
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
blister resistance.
A01.05 on Steel Reinforcement.
Current edition approved Sept. 1, 2022. Published November 2022. Originally
approved in 2012. Last previous edition approved in 2019 as A1078/A1078M – 19.
DOI: 10.1520/A1078_A1078M-22.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Pittsburgh, PA 15222-4656, http://www.sspc.org.
Standards volume information, refer to the standard’s Document Summary page on Available from Concrete Reinforcing Steel Institute (CRSI), 933 N. Plum
the ASTM website. Grove Rd., Schaumburg, IL 60173–4758, http://www.crsi.org.
*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
A1078/A1078M − 22
3.1.7 Type 1 coating, n—epoxy powder coating meeting Specification A615 [Specification A615M]. The bars shall be
Annex A1 of Specification A775/A775M or Annex A1 of free of contaminants such as oil, grease, paint or chlorides.
Specification A1055/A1055M.
5.2 Incoming bars found to be contaminated shall be re-
3.1.8 Type 2 coating, n—epoxy powder coating meeting
jected.
Annex A1 of Specification A934/A934M.
1 1
5.3 Dowels shall be 1 ⁄4 in. [32 mm] or 1 ⁄2 in. [38 mm] in
diameter or as specified by the purchaser.
4. Ordering Information
5.4 The coated dowels shall have an overall length of 18 in.
4.1 Orders for epoxy-coated steel dowels under this speci-
[460 mm] or as specified by the purchaser.
fication shall contain the following information:
5.5 The coating type shall be specified by the purchaser.
4.1.1 Quantity of dowels,
4.1.2 Diameter of dowels (5.3), Type1coatingsshallbequalifiedinaccordancewithAnnexA1
of Specification A775/A775M or Specification A1055/
4.1.3 Type of coating (5.5), and
4.1.4 ASTM designation A1078 [A1078M] and year of A1055M.Type 2coatingsshall bequalifiedinaccordancewith
Annex A1 of Specification A934/A934M.
issue.
5.6 Upon request, the purchaser shall be provided with the
4.2 Thepurchasershallhavetheoptiontospecifyadditional
test report for coatings used.
requirements, including but not limited to the following:
4.2.1 Requirements for plain bars, if other than ASTM
5.7 A written certification shall be furnished to the pur-
designation A615 [A615M] and year of issue (5.1),
chaser that properly identifies the designation of each lot of
4.2.2 Length of dowels, if other than 18 in. [460 mm] (5.4),
epoxy powder coating used in the order, material quantity
4.2.3 Grade of steel if other than Grade 60 [420] (5.1),
represented, date of manufacture, name and address of the
4.2.4 Test report for type of coating used, if desired (5.6),
epoxy powder coating manufacturer, and a statement that the
4.2.5 Representative sample of epoxy coating powder
supplied powder coating is the same composition as that
(5.10),
qualified in accordance with 5.5.
4.2.6 Test report for review to confirm that the epoxy
5.8 The powder coating shall be stored in a temperature-
powder conforms to Annex A1 (5.5),
controlled environment following the documented recommen-
4.2.7 Quantity of patching material (5.11.4),
dations of the powder coating manufacturer until ready for use.
4.2.8 Requirements for patching (7.7),
At this point, if the storage temperature is below the plant
4.2.9 Pretreatment of the abrasive blast-cleaned steel
ambient temperature, the powder coating shall be given suffi-
surface, if required (6.5),
cient time to reach a temperature that is within 65°F[62 °C]
4.2.10 Cutting of dowels with Type 2 coating, if permitted
of the plant ambient temperature.
(7.6),
4.2.11 Thickness of coating on dowels, if other than 8 mils 5.9 The powder coating shall be used within the powder
[200 µm] (8.1.1), coating manufacturer’s written recommended shelf life.
4.2.12 Place of testing, if other than manufacturer’s plant
5.10 If specified in the order, a representative 8 oz [0.2 kg]
(8.2.3),
sample of the epoxy powder coating shall be supplied to the
4.2.13 Timing of holiday checks for Type 1 coatings, if
purchaser from each batch.The sample shall be packaged in an
other than before cutting (8.2.2),
airtight container and identified by lot number.
4.2.14 Specific requirements for number of tests and fre-
5.11 Patching material for repairing damaged coating and
quency of tests (9.1),
for coating uncoated areas shall be inert in concrete, and
4.2.15 Report on results of tests performed on the coated
feasible for repairs at the applicator plant or at the fabricating
dowels being furnished (8.3.3),
shop.
4.2.16 Waive the requirement of patching of coated dowels
5.11.1 The powder coating manufacturer shall specify the
prior to shipment (13.1),
approved patching material to be used with their powder.
4.2.17 Thickness of patching material, if other than as
5.11.2 Patching material shall be approved in accordance
specified in ASTM designation A775 [A775M], A1055
with Annex A2 of Specification A775/A775M prior to use.
[A1055M], or A934 [A934M] (13.3),
5.11.3 The patching material manufacturer shall specify the
4.2.18 Requirements for inspection (12.1),
method of metal surface preparation, and the procedures for
4.2.19 Manufacturer qualification and certification
application of the patching material.
requirements,
5.11.4 If specified in the order, patching material shall be
4.2.20 Other special requirements, if any.
supplied to the purchaser.
NOTE2—Itisrecommendedthatthecoatingapplicationproceduresand
processes be audited by an independent certification program for epoxy
6. Surface Preparation
coating applicator plants such as that provided by the Concrete Reinforc-
6.1 Blast media found to be salt contaminated from expo-
ing Steel Institute, or equivalent.
sure to deicing salt, salt spray or the manufacturing process,
5. Materials shall not be used.
5.1 Dowels shall consist of plain bars. Unless otherwise 6.2 The surface of the steel to be coated shall be cleaned by
specified, the bars shall be Grade 60 [420] and conform to abrasive blast-cleaning to near-white metal in accordance with
A1078/A1078M − 22
SSPC-SP 10. The final surface condition shall be defined 8. Requirements For Coated Dowels
according to SSPC-VIS 1.
8.1 Coating Thickness:
6.3 Average blast profile maximum roughness depth read-
8.1.1 The coating thickness after curing for Type 1 and
ings of 1.5 mils to 4.0 mils [40 µm to 100 µm] as determined
Type 2 coatings shall be greater than 8 mils [200 µm] or as
by the use of a profilometer type surface measurement instru-
requested by the purchaser in the purchase order or contract.
ment that measures the peak count as well as the maximum
8.1.2 A single recorded coating thickness measurement is
profile depth, according to Test Methods D4417, Method B, or
the average of three individual gauge readings.Aminimum of
as determined by replica tape measurements using Test Meth-
five recorded measurements shall be taken approximately
ods D4417, Method C, shall be considered suitable as an
evenly spaced along opposite sides of the test specimen (A
anchor pattern.
minimum of 10 re
...

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: A1078/A1078M − 19 A1078/A1078M − 22
Standard Specification for
Epoxy-Coated Steel Dowels for Concrete Pavement
This standard is issued under the fixed designation A1078/A1078M; 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 plain steel dowel bars with protective fusion-bonded epoxy coating for use in concrete pavements.
1.2 This specification is applicable for orders in either inch-pound units (as Specification A1078) or in SI units (as Specification
A1078M).
1.3 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are
shown in brackets. 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 this specification.
1.4 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.
NOTE 1—The coating applicator is identified throughout this specification as the manufacturer.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A775/A775M Specification for Epoxy-Coated Steel Reinforcing Bars
A934/A934M Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
A1055/A1055M Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
D4417 Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
2.2 Society for Protective Coatings Specifications:
SSPC-PA 2 Measurement of Dry Coating Thickness with Magnetic Gauges
SSPC-SP 10 Near-White Blast Cleaning
SSPC-VIS 1 Pictorial Surface Preparation Standards for Painting Steel Surfaces
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 May 1, 2019Sept. 1, 2022. Published May 2019November 2022. Originally approved in 2012. Last previous edition approved in 20122019 as
ɛ1
A1078/A1078M – 1219. . DOI: 10.1520/A1078_A1078M-19.10.1520/A1078_A1078M-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor, Pittsburgh, PA 15222-4656, http://www.sspc.org.
*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
A1078/A1078M − 22
2.3 Concrete Reinforcing Steel Institute Documents:
CRSI Voluntary Certification Program for Fusion Bonded Epoxy Coating Applicator Plants
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 epoxy powder coating, n—a fusion-bonded epoxy coating product containing pigments, thermosetting epoxy resins,
cross-linking agents, and other additives, which is applied in the form of a powder onto a clean, heated metallic substrate and fuses
to form a continuous barrier coating.
3.1.2 final coat, n—the last application of the Type 1 or Type 2 coating.
3.1.3 holiday, n—discontinuity in a coating that is not discernible to a person with normal or corrected vision.
3.1.4 patching material, n—liquid two-part epoxy coating used to repair damaged or uncoated areas.coating and to coat uncoated
areas on the surface of a coated bar.
3.1.5 plain bar, n—steel bar without protrusions.
3.1.6 pretreatment, n—a preparation of the blast-cleaned steel surface prior to coating application that is formulated to pre-treat
the metal to promote coating adhesion, reduce metal/coating reactions, improve corrosion resistance, and increase blister
resistance.
3.1.7 Type 1 coating, n—epoxy powder coating meeting Annex A1 of Specification A775/A775M or Annex A1 of Specification
A1055/A1055M.
3.1.8 Type 2 coating, n—epoxy powder coating meeting Annex A1 of Specification A934/A934M.
4. Ordering Information
4.1 Orders for epoxy-coated steel dowels under this specification shall contain the following information:
4.1.1 Quantity of dowels,
4.1.2 Diameter of dowels (5.3),
4.1.3 Type of coating (5.5), and
4.1.4 ASTM designation A1078 [A1078M] and year of issue.
4.2 The purchaser shall have the option to specify additional requirements, including but not limited to the following:
4.2.1 Requirements for plain bars, if other than ASTM designation A615 [A615M] and year of issue (5.1),
4.2.2 Length of dowels, if other than 18 in. [460 mm] (5.4),
4.2.3 Grade of steel if other than Grade 60 [420] (5.1),
4.2.4 Test report for type of coating used, if desired (5.6),
4.2.5 Representative sample of epoxy coating powder (5.10),
4.2.6 Test report for review to confirm that the epoxy powder conforms to Annex A1 (5.5),
Available from Concrete Reinforcing Steel Institute (CRSI), 933 N. Plum Grove Rd., Schaumburg, IL 60173–4758, http://www.crsi.org.
A1078/A1078M − 22
4.2.7 Quantity of patching material (5.115.11.4),
4.2.8 Requirements for patching (7.7),
4.2.9 Pretreatment of the abrasive blast-cleaned steel surface, if required (6.5),
4.2.10 Cutting of dowels with Type 2 coating, if permitted (7.6),
4.2.11 Thickness of coating on dowels, if other than 8 mils [200 μm] (8.1.1),
4.2.12 Place of testing, if other than manufacturer’s plant (8.2.3),
4.2.13 Timing of holiday checks for Type 1 coatings, if other than before cutting (8.2.2),
4.2.14 Specific requirements for number of tests and frequency of tests (9.1),
4.2.15 Report on results of tests performed on the coated dowels being furnished (8.3.3),
4.2.16 Waive the requirement of patching of coated dowels prior to shipment (13.1),
4.2.17 Thickness of patching material, if other than as specified in ASTM designation A775 [A775M], A1055 [A1055M], or A934
[A934M] (13.3),
4.2.18 Requirements for inspection (12.1),
4.2.19 Manufacturer qualification and certification requirements,
4.2.20 Other special requirements, if any.
NOTE 2—It is recommended that the coating application procedures and processes be audited by an independent certification program for epoxy coating
applicator plants such as that provided by the CRSI Voluntary Certification Program,Concrete Reinforcing Steel Institute, or equivalent.
5. Materials
5.1 Dowels shall consist of plain bars. Unless otherwise specified, the bars shall be Grade 60 [420] and conform to Specification
A615 [Specification A615M]. The bars shall be free of contaminants such as oil, grease, paint or chlorides.
5.2 Incoming steelbars found to be salt contaminated shall be rejected.
1 1
5.3 Dowels shall be 1 ⁄4 in. [32 mm] or 1 ⁄2 in. [38 mm] in diameter or as specified by the purchaser.
5.4 The coated dowels shall have an overall length of 18 in. [460 mm] or as specified by the purchaser.
5.5 The coating type shall be specified by the purchaser. Type 1 coatings shall be qualified in accordance with Annex A1 of
Specification A775/A775M or Specification A1055/A1055M. Type 2 coatings shall be qualified in accordance with Annex A1 of
Specification A934/A934M.
5.6 Upon request, the purchaser shall be provided with the test report for coatings used.
5.7 A written certification shall be furnished to the purchaser that properly identifies the designation of each lot of epoxy powder
coating used in the order, material quantity represented, date of manufacture, name and address of the epoxy powder coating
manufacturer, and a statement that the supplied powder coating is the same composition as that qualified in accordance with 5.5.
5.8 The powder coating shall be stored in a temperature-controlled environment following the documented recommendations of
A1078/A1078M − 22
the powder coating manufacturer until ready for use. At this point, if the storage temperature is below the plant ambient
temperature, the powder coating shall be given sufficient time to reach a temperature that is within 65°F [62°C]65 °F [62 °C]
of the plant ambient temperature.
5.9 The powder coating shall be used within the powder coating manufacturer’s written recommended shelf life.
5.10 If specified in the order, a representative 8 oz [0.2 kg] sample of the epoxy powder coating shall be supplied to the purchaser
from each batch. The sample shall be packaged in an airtight container and identified by lot number.
5.11 If specified in the order, patching material, compatible with the coating, inert in concrete and recommended by the coating
manufacturer shall be supplied to the purchaser.Patching material for repairing damaged coating and for coating uncoated areas
shall be inert in concrete, and feasible for repairs at the applicator plant or at the fabricating shop.
5.11.1 The powder coating manufacturer shall specify the approved patching material to be used with their powder.
5.11.2 Patching material shall be approved in accordance with Annex A2 of Specification A775/A775M prior to use.
5.11.3 The patching material manufacturer shall specify the method of metal surface preparation, and the procedures for
application of the patching material.
5.11.4 If specified in the order, patching material shall be supplied to the purchaser.
6. Surface Preparation
6.1 Blast media found to be salt contaminated from exposure to deicing salt, salt spray or the manufacturing process, shall not be
used.
6.2 The surface of the steel to be coated shall be cleaned by abrasive blast-cleaning to near-white metal in accordance with
SSPC-SP 10. The final surface condition shall be defined according to SSPC-VIS 1.
6.3 Average blast profile maximum roughness depth readings of 1.51.5 mils to 4.0 mils [40[40 μm to 100 μm] as determined by
the use of a profilometer type surface measurement instrument that measures the peak count as well as the maximum profile depth,
according to Test Methods D4417, Method B, or as determined by replica tape measurements using Test Methods D4417, Method
C, shall be considered suitable as an anchor pattern.
6.4 Multidirectional, high-pressure, dry air knives shall be used after blast cleaning to remove dust, grit, and other foreign matter
from the steel surface. The air knives shall not deposit oil on the steel.
6.5 Pretreatment of the blast-cleaned steel shall be applied when specified by the purchaser. The pretreatment shall be applied after
abrasive cleaning and before coating, in accordance w
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