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This specification covers filled epoxy-coated seven-wire prestressing steel strands with protective fusion-bonded epoxy coating applied by the electrostatic deposition method. This specification also covers relaxation loss limits for filled epoxy coated strands. Prestressing steel strands shall be free of contaminants such as oil, grease, or paint. Steel strand surfaces shall be cleaned to meet coating requirements, such as coating thickness, coating continuity, coating adhesion, coating composition, and coating bond with concrete or grout. Smooth or grit-impregnated coating shall be applied by the electrostatic deposition method or other method that will meet the coating requirements. Pullout tests shall be performed three times annually or maybe repeated if the coating failed to meet the requirements.
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.
1.1 This specification covers seven-wire steel prestressing strand with protective fusion-bonded epoxy powder coating applied by the electrostatic deposition method or other suitable method, with the interstices of the seven wires filled with epoxy to minimize migration of corrosive media, either by capillary action or other hydrostatic forces.
Note 1: The manufacturer as identified throughout this specification is the coating applicator.
1.2 A supplementary requirement (S1) is provided for use where bond strength testing of 0.600-in. [15.24-mm] diameter grade 270  epoxy-coated strand for applications in prestressed ground anchors is required by the purchaser. The supplementary requirement applies only when specified in the purchase order or contract.
1.3 Requirements for epoxy powder coatings are contained in .
1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the specification.
1.5 This specification is applicable for orders in either inch-pound units (as Specification ) or SI units [as Specification ].
1.6 The values stated in either SI units or inch-pound 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 the specification.
1.7 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A416/A416M Specification for Low-Relaxation, Seven-Wire Steel Strand for Prestressed Concrete
A981/A981M Test Method for Evaluating Bond Strength for 0.600-in. [15.24-mm] Diameter Steel Prestressing Strand, Grade 270 , Uncoated, Used in Prestressed Ground Anchors
A1061/A1061M Test Methods for Testing Multi-Wire Steel Prestressing Strand
B117 Practice for Operating Salt Spray (Fog) Apparatus
D968 Test Methods for Abrasion Resistance of Organic Coatings by Falling Abrasive
D7091 Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals
G14 Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
G20 Test Method for Chemical Resistance of Pipeline Coatings
U.S. Military StandardMIL-STD-129 Marking for Shipment and Storage
U.S. Federal StandardFed. Std. No. 123 Marking for Shipment (Civil Agencies)
SSPC SpecificationSSPC-PA 2
Federal Highway Administration ReportFHWA-RD-74-18
UNSPSC Code 31152206(Coated steel wire); 31152207(Prestressed concrete steel wire)
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ASTM A882 / A882M-20, Standard Specification for Filled Epoxy-Coated Seven-Wire Steel Prestressing Strand, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top