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  • ASTM
    A1132/A1132M-26 Standard Specification for Twisted Steel Fiber (TSF) for Concrete
    Edition: 2026
    $144.00
    Unlimited Users per year

Description of ASTM-A1132/A1132M 2026

ASTM A1132/A1132M-26

Active Standard: Standard Specification for Twisted Steel Fiber (TSF) for Concrete




ASTM A1132/A1132M

Scope

1.1 This specification covers minimum requirements for twisted steel fiber (TSF) for concrete. TSF is a deformed steel wire with a non-circular cross-section that is twisted at least 360° about its axis. It is sufficiently small to be batched in large quantities and randomly dispersed in concrete like other steel fibers.

Note 1: The requirements in this specification are generally similar to, but more restrictive than, those for steel fibers in Specification A820/A820M Type I. In this specification, additional requirements are added that are unique to TSF. These include twist pitch, number of faces, perimeter of the cross-section, and parameters that govern the fiber’s bond to concrete (for example, through an “untwisting” and stick-slip pull-out mechanism).

1.2 In the case of a conflict between a requirement of this specification and a more stringent requirement of the purchase order, the purchase order shall prevail. The purchase order requirements shall not take precedence if they in any way violate the requirements of this specification; for example, by waiving of a test requirement or making a test requirement less stringent.

1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

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.

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.


Keywords

acceptance testing; classification; fiber-reinforced concrete; tensile strength; testing procedures; twisted steel fiber; TSF;


ICS Code

ICS Number Code 77.140.15 (Steels for reinforcement of concrete)


DOI: 10.1520/A1132_A1132M-26



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