ASTM A1055 / A1055M - 10e1 standard specification for zinc and epoxy dual-coated steel reinforcing bars

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Source: ASTM International

This specification covers deformed and plain steel reinforcing bars with a dual coating of zinc alloy and an epoxy coating. The zinc alloy layer shall be applied by the thermal spray coating method followed by an epoxy coating, which shall be applied by the electrostatic spray method. The zinc coating shall conform to the required chemical composition for aluminum, cadmium, copper, iron, lead, tin, antimony, silver, bismuth, arsenic, nickel, magnesium, titanium, and zinc. The coated steel reinforcing bars shall conform to bend test requirements and to physical properties such as coating thickness, coating continuity, epoxy coating flexibility, and coating adhesion.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers deformed and plain steel reinforcing bars with a dual coating of zinc alloy and an epoxy coating. The zinc-alloy layer is applied by the thermal spray coating method (metallizing) followed by an epoxy coating applied by the electrostatic spray method.

Note 1—The coating applicator is identified throughout this specification as the manufacturer.

1.2 Requirements of the zinc coating are contained in Table 1.

1.3 Requirements for fusion-bonded powder coatings are contained in Annex A1.

1.4 Guidelines for construction practices at the job-site are presented in Appendix X1.

1.5 This specification is applicable for orders in either inch-pound or SI units.

1.6 The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other, except as specifically noted in Table 2. Combining values from the two systems may result in nonconformance with this specification.

1.7 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 (purchase separately)

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
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
B833 Specification for Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) for the Corrosion Protection of Steel
D4060 Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
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
G62 Test Methods for Holiday Detection in Pipeline Coatings

NACE International Standard
RP-287 Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surface Using a Replica Tape

Society for Protective Coatings Specifications
SSPC-VIS1 Pictorial Surface Preparation standards for Painting Steel Surfaces

Concrete Reinforcing Steel Institute
VoluntaryCertificati for Fusion Bonded Epoxy Coating Applicator Plants

American Concrete Institute Standard
ACI301 Specifications for Structural Concrete

American Welding Society
AWSC2.25/C2.25M Specification for Thermal Spray Feedstock--Solid and Composite Wire and Ceramic Rods

Index Terms

alloy zinc coating; barrier organic coating; coating requirements; concrete reinforcement; corrosion resistance; dual coated; powder coating; steel bars; thermal spray coating (metallization); Steel reinforcing bars; Zinc ;

ICS Code

ICS Number Code 25.220.40 (Metallic coatings); 25.220.60 (Organic coatings)

DOI: 10.1520/A1055_A1055M-10E01

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