• Aslani, Farhad
• Nejadi, S.

Abstract

Steel fiber reinforced self-compacting concrete (SFRSCC) is a relatively new composite material<br/>which congregates the benefits of the SCC technology with the profits derived from the addition of fiber<br/>to a brittle cementitious matrix. Steel fibers improve many of the mechanical properties of self-compacting<br/>concrete (SCC) elements including tensile strength, ductility, toughness, energy absorption capacity, and fracture<br/>toughness. This paper investigates the bond characteristics between steel fiber and SCC based on the<br/>available experimental results. An analytical steel fiber pullout model proposed by Dubey (1999) is modified<br/>by considering the different mechanical properties of SCC and different fiber types (smooth, hooked) and inclination.<br/>In order to take into account the effect of the fiber inclination in the pullout model, apparent shear<br/>strengths (τ(app)) and slip coefficient (β) are incorporated to express the variation of pullout peak load and the<br/>augmentation of peak slip as the inclination angle increases. These variables are expressed as functions of the<br/>inclination angle (ϕ).

Topics

• impedance spectroscopy
• strength
• steel
• composite
• tensile strength
• ductility