Title:
Reinforced Steel Fiber Concrete Corbels With Various Shear Span-to-Depth Ratios
Author(s):
N. I. FattuhiI and B. P. Hughes
Publication:
Materials Journal
Volume:
86
Issue:
6
Appears on pages(s):
590-596
Keywords:
compressive strength; corbels; cracking (fracturing); failure; fiber reinforced concretes; flexural strength; load-deflection curve; metal fibers; reinforced concrete; shear strength; span-depth ratio; Materials Research
DOI:
10.14359/2243
Date:
11/1/1989
Abstract:
Vertical loading tests were carried out on 150 x 150 x 200 mm (6 x 6 x 8-in.) concrete corbels reinforced with main bars only or with main bars and steel fibers. The fibers were used as secondary (shear) reinforcement, and both the volume of main bars and shear span-to-depth ratio were varied. The tests indicated that corbels reinforced only with main bars failed suddenly and catastrophically, and the mode of failure was generally diagonal splitting or constrained shear. However, corbels reinforced with main bars and steel fibers failed in a more gradual and ductile manner, and the mode of failure was generally inclined shear or flexure. Corbels reinforced with a low volume of main bars and tested at a relatively large shear span-to-depth ratio exhibited an almost elastic-plastic behavior.