Title:
Fiber Type Effects on the Performance of Steel Fiber Reinforced Concrete
Author(s):
Parviz Soroushian and Ziad Bayasi
Publication:
Materials Journal
Volume:
88
Issue:
2
Appears on pages(s):
129-134
Keywords:
compression; fiber reinforced concrete; flexural tests; metal fibers; performance; reinforcing steels; tests; workability; Materials Research
DOI:
10.14359/1883
Date:
3/1/1991
Abstract:
The results of an experimental study on the relative effectiveness of different types of steel fibers in concrete are reported. The fibers considered in this study were straight-round, crimped-round, crimped-rectangular, hooked-single and hooked-collated with aspect ratios of about 60, and straight-round and hooked-collated fibers with aspect ratios of about 75. A constant fiber volume fraction of 2 percent was used throughout this investigation. The fresh fibrous mixes were characterized by their slump, inverted slump-cone time, and subjective workability, and the hardened materials by their compressive and flexural load-deformation relationships. The overall workability of fresh fibrous mixes was found to be largely independent of the fiber type, with crimped fibers producing only slightly higher slumps. Hooked fibers were found to be more effective than straight and crimped ones in enhancing the flexural and compressive behavior of concrete. Under flexural loads, crimped fibers (rectangular or circular) were slightly less effective than straight ones in improving the strength and energy absorption of concrete.