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- Title
Shear strength of reinforced concrete beams with a fiber concrete matrix.
- Authors
Majdzadeh, Fariborz; Soleimani, Sayed Mohamad; Banthia, Nemkumar
- Abstract
The purpose of this study was to investigate the influence of fiber reinforcement on the shear capacity of reinforced concrete (RC) beams. Both steel and synthetic fibers at variable volume fractions were investigated. Two series of tests were performed: structural tests, where RC beams were tested to failure under an applied four-point load; and materials tests, where companion fiber-reinforced concrete (FRC) prisms were tested under direct shear to obtain material properties such as shear strength and shear toughness. FRC test results indicated an almost linear increase in the shear strength of concrete with an increase in the fiber volume fraction. Fiber reinforcement enhanced the shear load capacity and shear deformation capacity of RC beams, but 1% fiber volume fraction was seen as optimal; no benefits were noted when the fiber volume fraction was increased beyond 1%. Finally, an equation is proposed to predict the shear capacity of RC beams.
- Subjects
REINFORCED concrete; CONSTRUCTION materials; COMPOSITE-reinforced concrete; CONCRETE; SHEAR (Mechanics); CIVIL engineering
- Publication
Canadian Journal of Civil Engineering, 2006, Vol 33, Issue 6, p726
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/L05-118