ABSTRACT
In this study, a single-reinforced concrete was tested to investigate deterioration due to corrosion. The investigation mainly focused on the effects of corrosion on an interaction zone between concrete and corroded reinforcement, and the degraded strength of corroded reinforced concrete member. This interaction zone composes of inter-locking, friction, cohesion, and corrosion products. Also, the corrosion characteristics including corrosion distribution and corrosion-introduced crack was discussed. The results indicated that bond between concrete and corroded reinforcement was initially degraded after appearance of corrosion crack, and exponentially decreased with increase of steel corrosion. Finite element analysis also showed that the corrosion crack significantly changed behavior of the interaction zone. The interaction zone of reinforced concrete member with corrosion cracks on concrete surface might has a similar behavior as granular material. Moreover, the calculated yield strength of RC member from the maximum mass loss has lower than the test results.
