Title:
Shear Response of Dowel Reinforced SIFCON
Author(s):
A. E. Naaman and M. R. Baccouche
Publication:
Structural Journal
Volume:
92
Issue:
5
Appears on pages(s):
587-596
Keywords:
dowels; ductility; fibers (discrete fibers); reinforced concrete; shear properties; shear strength; slurries; Structural Research
DOI:
10.14359/908
Date:
11/1/1995
Abstract:
This paper presents the results of an experimental investigation on the shear response of slurry infiltrated fiber concrete (SIFCON) with and without dowel reinforcement when subjected to monotonically increasing shear loading. Specimens tested include plain slurry, plain concrete, dowel reinforced concrete, SIFCON, and dowel reinforced SIFCON. Several parameters were investigated: two different volume fractions of fibers (6 percent of ZL50/50 and 11 percent of ZL30/50 hooked steel fibers), two dowel reinforcement ratios (rho = 1.40 and 2.50 percent), and two slurry compressive strengths, about 6 and 11 ksi (42 and 77 MPa). Special emphasis is placed on analyzing the contribution of steel fibers and dowel bar reinforcement to the strength, ductility, and energy-absorbing capacity of the composite. The results show that dowel reinforced SIFCON has an outstanding response under shear loading. It has an ultimate shear strength of up to 5 ksi (35 MPa), and an energy- absorbing capability of up to 1200 times that of plain concrete and up to 12 times that of dowel reinforced concrete.