Title:
Fresh and Hardened Properties of Self-Consolidating Fiber-Reinforced Concrete
Author(s):
Hemant B. Dhonde, Y. L. Mo, Thomas T. C. Hsu, and John Vogel
Publication:
Materials Journal
Volume:
104
Issue:
5
Appears on pages(s):
491-500
Keywords:
self-consolidating concrete; steel fiber-reinforced concrete; workability.
DOI:
10.14359/18905
Date:
9/1/2007
Abstract:
When steel fibers are added to a concrete mixture, the tensile and shear resistance of the traditional fiber-reinforced concrete are known to be enhanced. Fibers, however, are also known to impede workability of plain concrete. To improve the workability, selfconsolidating fiber-reinforced concrete (SCFRC) mixtures were developed in this study for application in prestressed concrete beams. Extensive fresh and hardened properties of traditional fiber-reinforced concrete and SCFRC mixtures produced using two different types and variable amounts of hooked steel fibers are presented in this paper. The SCFRC mixtures demonstrated satisfactory workability and stability up to a fiber factor of 55. In general, SCFRC mixtures proved to have greater normalized tensile strength than the traditional fibrous concrete mixtures for the same fiber factor. The optimum fiber content was found to be governed by workability requirements of the concrete mixture.