[ir_71]

FRESH AND HARDENED PROPERTIES OF SELF-CONSOLIDATING FIBER REINFORCED CONCRETE

Author: Hemant B. Dhonde, Y.L. Mo, Thomas T.C. Hsu and John Vogel | Size: 7.8 MB | Format: PDF | Publisher: ACI MATERIALS JOURNAL | Year: 2007 | pages: 40

When steel fibers are added to concrete mix, the tensile and shear resistance of the
traditional fiber reinforced concrete are known to be enhanced. However, fibers are also known
to impede workability of plain concrete. To improve the workability, Self-Consolidating Fiber
Reinforced Concrete (SCFRC) mixes were developed in this study for application in prestressed
concrete beams. Extensive fresh and hardened properties of traditional fiber reinforced concrete
and SCFRC mixes produced using two different types and variable amounts of hooked steel
fibers are presented in this paper. The SCFRC mixes demonstrated satisfactory workability and
stability up to a fiber-factor of 55. In general, SCFRC mixes proved to have greater normalized
tensile strength than the traditional fibrous concrete mixes for the same fiber-factor. The
optimum fiber content was found to be governed by workability requirements of the concrete
mix.
Keywords: steel fiber reinforced concrete, self-consolidating concrete, self-consolidating fiber
reinforced concrete, fresh properties, workability, hardened properties.

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