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Modeling the pullout of wire-drawn steel fibers☆☆ This paper was originally submitted to Advanced Cement Based Materials. The paper was received at the Editorial Office of Cement and Concrete Research on 15 December 1998 and accepted in final form on 24 March 1999.

Authors
Journal
Cement and Concrete Research
0008-8846
Publisher
Elsevier
Publication Date
Volume
29
Issue
7
Identifiers
DOI: 10.1016/s0008-8846(99)00081-2
Keywords
  • Steel Fiber
  • Cement-Based Composite
  • Fiber Geometry
  • Modeling
  • Friction
  • Cohesion
  • Steel Hardening
  • Pullout Test
Disciplines
  • Mathematics

Abstract

Abstract Previously, the emphasis when modeling the behavior of the pullout of an individual fiber anchored in a cement-based matrix was on bond-stress-slip relationships. In case of fibers with nonstraight geometries, such modeling approaches present obvious limitations. In this paper, a micromechanical model has been developed taking into account the different phenomena observed during pullout of a nonstraight fiber, including the mechanisms of steel deformation. Model's parameters are fitted, based on experiments carried out on specially made fibers. Finally, applications of the model to the geometries of commercialized fibers are presented. The good performances that were obtained in comparison with pullout tests confirms the validity of the chosen approach. It opens the door to a modeling of fiber behavior based on a knowledge of characteristics of the fibers themselves and to an optimization of fiber geometries.

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