ASTM A1078/A1078M-12
(Specification)Standard Specification for Epoxy-Coated Steel Dowels for Concrete Pavement
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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—The coating applicator is identified throughout this specification as the manufacturer.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A1078/A1078M −12
StandardSpecification 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 2.2 Society for Protective Coatings Specifications:
SSPC-PA 2 Measurement of Dry Coating Thickness with
1.1 This specification covers plain steel dowel bars with
Magnetic Gauges
protective fusion-bonded epoxy coating for use in concrete
SSPC-SP 10 Near-White Blast Cleaning
pavements.
SSPC-VIS 1 Pictorial Surface Preparation Standards for
1.2 This specification is applicable for orders in either
Painting Steel Surfaces
inch-pound units (as Specification A1078) or in SI units (as 4
2.3 Concrete Reinforcing Steel Institute Documents:
Specification A1078M).
CRSI Voluntary Certification Program for Fusion Bonded
1.3 The values stated in either inch-pound or SI units are to Epoxy Coating Applicator Plants
be regarded separately as standard.Within the text, the SI units
3. Terminology
are shown in brackets. The values stated in each system may
3.1 Definitions of Terms Specific to This Standard:
not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two
3.2 epoxy powder coating, n—a fusion-bonded epoxy coat-
systems may result in non-conformance with this specification.
ing product containing pigments, thermosetting epoxy resins,
cross-linking agents, and other additives, which is applied in
1.4 This standard does not purport to address all of the
the form of a powder onto a clean, heated metallic substrate
safety concerns, if any, associated with its use. It is the
and fuses to form a continuous barrier coating.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.3 final coat, n—the last application of the Type 1 or Type
bility of regulatory limitations prior to use.
2 coating.
3.4 holiday, n—discontinuityinacoatingthatisnotdiscern-
NOTE 1—The coating applicator is identified throughout this specifica-
tion as the manufacturer.
ible to a person with normal or corrected vision.
3.5 patching material, n—liquid two-part epoxy coating
2. Referenced Documents
used to repair damaged or uncoated areas.
2.1 ASTM Standards:
3.6 plain bar, n—steel bar without protrusions.
A615/A615M SpecificationforDeformedandPlainCarbon-
3.7 pretreatment, n—a preparation of the blast-cleaned steel
Steel Bars for Concrete Reinforcement
surface prior to coating application that is formulated to
A775/A775M Specification for Epoxy-Coated Steel Rein-
pre-treat the metal to promote coating adhesion, reduce metal/
forcing Bars
coating reactions, improve corrosion resistance, and increase
A934/A934M Specification for Epoxy-Coated Prefabricated
blister resistance.
Steel Reinforcing Bars
3.8 Type 1 coating, n—epoxy powder coating meeting
A1055/A1055M Specification for Zinc and Epoxy Dual-
Annex A1 of Specification A775/A775M or Annex A1 of
Coated Steel Reinforcing Bars
Specification A1055/A1055M.
D4417 Test Methods for Field Measurement of Surface
Profile of Blast Cleaned Steel
3.9 Type 2 coating, n—epoxy powder coating meeting
Annex A1 of Specification A934/A934M.
4. Ordering Information
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
4.1 It shall be the responsibility of the purchaser to specify
A01.05 on Steel Reinforcement.
all requirements that are necessary for the coated dowels under
Current edition approved May 15, 2012. Published September 2012. DOI:
10.1520/A1078_A1078M-12.
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 service@astm.org. 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A1078/A1078M − 12
this specification. Such requirements to be considered include, A1055M.Type 2 coatings shall be qualified in accordance with
but are not limited to, the following: Annex A1 of Specification A934/A934M.
4.1.1 Quantity of dowels;
5.6 Upon request, the purchaser shall be provided with the
4.1.2 Specification for plain bars, if other than A615/
test report for coatings used.
A615M, and year of issue (5.1);
5.7 A written certification shall be furnished to the pur-
4.1.3 Diameter of dowels (5.3);
chaser that properly identifies the designation of each lot of
4.1.4 Length of dowels, if other than 18 in. (5.4);
epoxy powder coating used in the order, material quantity
4.1.5 Grade of steel if other than Grade 60 [420] (5.1)
represented, date of manufacture, name and address of the
4.1.6 Type of coating (5.5);
epoxy powder coating manufacturer, and a statement that the
4.1.7 Test report for type of coating used, if desired (5.6);
supplied powder coating is the same composition as that
4.1.8 Sample of epoxy powder (5.10);
qualified in accordance with 5.5.
4.1.9 Quantity of patching material (5.11);
5.8 The powder coating shall be stored in a temperature-
4.1.10 Pretreatment of the abrasive blast-cleaned steel
controlled environment following the documented recommen-
surface, if required (6.5);
dations of the powder coating manufacturer until ready for use.
4.1.11 Cutting of dowels with Type 2 coating, if permitted
At this point, if the storage temperature is below the plant
(7.6);
ambient temperature, the powder coating shall be given suffi-
4.1.12 Requirements for patching (7.7);
cient time to reach a temperature that is within 65°F [62°C]
4.1.13 Coating thickness, if other than greater than 8 mils
of the plant ambient temperature.
[200 m] (8.1.1);
4.1.14 Place of testing, if other than manufacturers plant
5.9 The powder coating shall be used within the powder
(8.2.3);
coating manufacturer’s written recommended shelf life.
4.1.15 Timing of holiday checks for Type 1 coatings, if
5.10 If specified in the order, a representative 8 oz [0.2 kg]
other than before cutting (8.2.2);
sample of the epoxy powder coating shall be supplied to the
4.1.16 Report on tests performed on the coated dowels
purchaser from each batch.The sample shall be packaged in an
being furnished, if required (8.3.3);
airtight container and identified by lot number.
4.1.17 Specific requirements for number of tests and fre-
5.11 If specified in the order, patching material, compatible
quency of tests (Section 9);
with the coating, inert in concrete and recommended by the
4.1.18 Additionalspecimenstobeprovidedtothepurchaser
coating manufacturer shall be supplied to the purchaser.
for testing from the coated dowels being furnished, if required
(12.2);
6. Surface Preparation
4.1.19 Patching of dowels prior to shipment, if waived
(13.1);
6.1 Blast media found to be salt contaminated from expo-
4.1.20 Thickness of patching material, if other than as
sure to deicing salt, salt spray or the manufacturing process,
specified in Specifications A775/A775M, A1055/A1055M,or
shall not be used.
A934/A934M (13.3); and
6.2 The surface of the steel to be coated shall be cleaned by
4.1.21 Manufacturer qualification and certification require-
abrasive blast-cleaning to near-white metal in accordance with
ments (if any).
SSPC-SP 10. The final surface condition shall be defined
NOTE2—Itisrecommendedthatthecoatingapplicationproceduresand
according to SSPC-VIS 1.
processes be audited by an independent certification program for epoxy
6.3 Average blast profile maximum roughness depth read-
coating applicator plants such as that provided by the CRSI Voluntary
Certification Program, or equivalent. ings of 1.5 to 4.0 mils [40 to 100 µm] as determined by the use
of a profilometer type surface measurement instrument that
5. Materials
measures the peak count as well as the maximum profile depth,
according to Test Methods D4417 Method B, or as determined
5.1 Dowels shall consist of plain bars. Unless otherwise
by replica tape measurements using Test Methods D4417
specified, the bars shall be Grade 60 [420] and conform to
Method C, shall be considered suitable as an anchor pattern.
Specification A615 [Specification A615M]. The bars shall be
free of contaminants such as oil, grease, paint or chlorides.
6.4 Multidirectional, high-pressure, dry air knives shall be
used after blast cleaning to remove dust, grit, and other foreign
5.2 Incoming steel found to be salt contaminated shall be
matter from the steel surface. The air knives shall not deposit
rejected.
oil on the steel.
1 1
5.3 Dowels shall be 1 ⁄4 in. [32 mm] or 1 ⁄2 in. [38 mm] in
6.5 Pretreatment of the blast-cleaned steel shall be applied
diameter or as specified by the purchaser.
when specified by the purchaser. The pretreatment shall be
5.4 The coated dowels shall have an overall length of 18 in.
applied after abrasive cleaning and before coating, in accor-
[460 mm] or as specified by the purchaser.
dance with the written application instructions specified by the
5.5 The coating type shall be specified by the purchaser. pretreatment manufacturer. If compatible with the epoxy pow-
Type1coatingsshallbequalifiedinaccordancewithAnnexA1 der coating, additional steel pretreatments prior to coating with
of Specification A775/A775M or Specification A1055/ the epoxy may be specified by the purchaser.
A1078/A1078M − 12
7. Coating Application 8.2.1 Thereshallnotbemorethananaverageofoneholiday
per foot [three holidays per metre] on the coated dowel.
7.1 The epoxy powder coating shall be applied to the
8.2.2 Holiday checks to determine conformance with 8.2.1
cleaned steel surface as soon as possible after steel surface
shall be made at the manufacturer’s plant with a 67.5-V, 80
treatmentshavebeencompletedandbeforevisibleoxidationof
000-ohm, wet-sponge-type direct current holiday detector. For
the steel surface is discernible to a person with normal or
dowels that are cut after the coating application, coating
corrected vision. In no case shall application of the coat
...
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