Developments in Corrosion Detection Techniques for Reinforced Concrete Structures

Objectives: In the era of the smart cities no infrastructure activity is possible without reinforced concrete structures and these structures face Corrosion of reinforcement. Every year there is a loss of billions required for repair and maintenance necessary for maintaining the performance of the infrastructure. Corrosion of the RCC rebar is responsible for the reduction of load carrying capacity of the structure. So detection of the corrosion is very important for further loss of any type. Methods/Analysis: For the corrosion detection in RCC structure it is very important to know about philosophy of the corrosion occurrence. In the current work various corrosion detection techniques were discussed including surface potential technique, radiography, vibrating wire and electrical strain gauges, Hough transform optical fiber sensors and embedded corrosion Instrument. All these methods are studied on the basis of the progressive detection criteria and the merits and the demerits of each method. Findings: On the basis of the review areas required improvement in environment corrosion interaction philosophy, simulation of acceleration rate of corrosion of steel,studies related to the transport of chlorides and carbonation process, corrosion cracking behaviour. Novelty/Improvements: This paper outlines the corrosion detection techniques on the progressive methods of the corrosion detection and points out the areas of improvement in detection philosophy.