Effect of longitudinal rebar corrosion on the compressive strength reduction of concrete in reinforced concrete structure

摘要

Compressive strength reduction of concretes due to corrosion of reinforcement is one of the main reasons of failure in reinforced concrete structure which has not been taken into account by researchers yet. Therefore, in this article, for the sake of examination of concrete's compressive strength reduction due to rebar corrosion, reinforced concrete cubic specimens are constructed, and then, accelerated corrosion is applied to them. With fixing all effective parameters in compressive strength except water-to-cement ratio, specimens with different water-to-cement ratios (0.4, 0.45, and 0.5) are constructed with various reinforcements. Finally, compressive strength tests are performed for corroded and non-corroded specimens and reduction in compressive strength is measured under different degrees of corrosions.