Procedure for the assessment of the residual capacity of corroded B-regions in RC structures

摘要

The estimation of the residual capacity of concrete structures after the commencement of corrosion of steel reinforcement is becoming a goal for repair and rehabilitation work. This paper presents a procedure for the assessment of the residual structural capacity of corrosion-affected RC members due to bond deterioration and reduction of the cross-section of the reinforcing steel bars, taking the reinforcement layout and details into account. Many researchers have studied the effect of corrosion on the flexural behavior of reinforced concrete beams but this piece of work introduces the way in which the corrosion levels can be accounted for from a structural point of view, in order to quantify the loss of capacity of B regions in RC members. The accuracy of the proposed method has been tested with experimental results of naturally corroded RC beams that exist in the relevant literature. (C) 2016 Elsevier Ltd. All rights reserved.