Abstract
The effects of both steel corrosion and repeated loading on performance of reinforced concrete beam were investigated. Repeated loads were applied to corroded reinforced concrete specimens with corrosion levels ranging from 0% to 5%. The experiments were conducted for the deflection, cracking, stiffness, bearing capacity and failure type of the corroded beams. For corrosion levels less than 5%, the residual deflection was about 3% of the maximum value of failure deflection. The deflection of beams of high corrosion levels were generally greater than those of low corrosion levels, while the flexural rigidity of the high corrosion levels decreased more in value than those of low corrosion levels. The failure modes of beams changed from plastic type to brittle type with the increase of corrosion level.
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