Title:
Reinforced corbels made with plain and fibrous concretes
Author(s):
Nijad I. Fattuhi
Publication:
Structural Journal
Volume:
91
Issue:
5
Appears on pages(s):
530-536
Keywords:
corbels; cracking (fracturing); failure; metal fibers; fiber reinforced concretes; span-depth ratio; strength; Structural Research
DOI:
10.14359/4166
Date:
9/1/1994
Abstract:
Tests were carried out on twenty-five 250 x 150 x 300-mm (10 x 6 x 12-in.) reinforced concrete corbels. Five corbels were subjected to combined horizontal and vertical loading to failure, while the remainder was tested under vertical loading only. Steel fibers were used as shear reinforcement in 16 corbels. Principal parameters varied included volume of main tension bars, shear span, and ratio of horizontal to vertical load. Test results confirmed earlier findings in that improvements in ductility and strength of corbels resulted when steel fibers were added to concrete. Also, corbels with fibers exhibited smaller crack widths under load than those without. The application of a horizontal load decreased the capacities of the corbels. Expressions for estimating maximum load carried by a corbel and load at a particular crack width based on statistical analysis of data are presented. Comparison between the experimental and calculated loads showed that they are generally in satisfactory agreement.