Title:
Ductility of Reinforced Concrete Corbels Containing Either Steel Fibers or Stirrups
Author(s):
Nijad I. Fattuhi and Barry P. Hughes
Publication:
Structural Journal
Volume:
86
Issue:
6
Appears on pages(s):
644-651
Keywords:
compressive strength; concretes; corbels; cracking (fracturing); ductility; failure; flexural strength; fiber reinforced concretes; load-deflection curve; metal fibers; shear strength; stirrups; Structural Research
DOI:
10.14359/2660
Date:
11/1/1989
Abstract:
Vertical loading tests are reported for fourteen 150 x 150 x 200 mm (6 x 6 x 8 in.) concrete corbels, twelve of which were reinforced with main bars and ten of which contained either steel fibers or stirrups as secondary (shear) reinforcement. The volume fractions of both main and secondary reinforcement were varied, and the test results indicated that the addition of fibers or stirrups improved both flexural and shear strengths and ductility of the corbels. Corbels reinforced with steel fibers failed in the most gradual and ductile manner, and the failure mode changed from being diagonal splitting to flexural when fibers were used as a secondary reinforcement. An almost elastic-plastic behavior was obtained for corbels reinforced with a relatively large volume of steel fibers (nearly twice the volume of main bars).