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EXPERTISE // LABORATORIES // TESTING STANDARDS

Steel Wire, Indented, Low-Relaxation for Prestressed Concrete

ASTM A881

This specification covers uncoated, deformed, stress-relieved, and low-relaxation wire for use as prestressed tendons in concrete railroad ties. Deformed wires with nominal diameters shall be supplied in coils and shall conform to specified values of breaking strength requirements. The relaxation losses of normal stress-relieved and low-relaxation stress-relieved wires should not exceed the specified limits. The two acceptable types of deformed wire shall have specific dimensions of deformations, where the depth of indent shall be the average depth of six or more random indents measured at maximum depth. The material shall be tested on and shall conform to specified values of the following mechanical properties: breaking strength, load at 1% extension, elongation, bending, and relaxation.

WJE laboratories are accredited by ANAB (ISO/IEC 17025) to perform testing standard ASTM A881 for Steel Wire, Indented, Low-Relaxation for Prestressed Concrete. Contact us to learn more.

Keywords

ASTM A881 - Annealing - Prestressed Concrete - Prestressed Concrete Products - Railroad Ballasts - Railroad Ties - Steel - Steel Wires - Stress Relieving - Wires, Wire Strands, and Wire Ropes

ICS CODE

77.140.15 (Steels for reinforcement of concrete)

UNSPSC CODE

31152207 (Prestressed concrete steel wire)

CITATION FORMAT

ASTM A881 / A881M-16a, Standard Specification for Steel Wire, Indented, Low-Relaxation for Prestressed Concrete, ASTM International, West Conshohocken, PA, 2016, www.astm.org

TESTING STANDARDS

Wiss, Janney, Elstner Associates is committed to helping our clients solve, repair, and avoid problems in the built world. Supported by unparalleled laboratory and field testing capabilities, our team of engineers, architects, and materials scientists brings an enthusiasm for problem solving and a hands-on technical approach to every challenge.

Ask the Structure and Solutions for the Built World are trademarks of Wiss, Janney, Elstner Associates, Inc.

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EXPERTISE // LABORATORIES // TESTING STANDARDS