Experimental investigation on flexural capacity of concrete beams reinforced using kenaf rebars

Loading...
Thumbnail Image
Date
2011-01-01
Authors
Chong Chee Hoe
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Steel rebars are widely used in construction of the concrete structure due to their efficiency and economic benefit. However, it faces the corrosion problem when the structures are exposed to aggressive environments. Fibers rebars can be used as an alternative to replace the conventional steel in order to overcome the corrosion problem. Experimental study on flexural behavior of concrete beam reinforced with kenaf fiber rebars has been carried out. In the experiment, three types of concrete beams reinforced with different arrangement of reinforcement were prepared. All beam were tested under four points bending test. The behaviors of these beams were investigated with the loadstrain characteristics, concrete and reinforcement strain distribution, cracking behavior, change of neutral axis and mode of failure. The experimental results on the flexural behavior indicated that the kenaf rebars reinforced specimens have a poorer performance as compared to conventional concrete beam. The shape of arrangement for the reinforcement greatly influences the flexural behavior of specimens. Moreover, the entire kenaf reinforced concrete beam showed extensive cracking pattern due to bonding between the rebars and concrete. The experimental ultimate loading sustained by the specimens has a small deviation from the theoretical value.
Description
Keywords
Citation