Abstract
In this paper a temperature dependent dispersed individual activation energy electrochemical approach is adopted which deals with chloride induced corrosion in reinforced concrete structures individually for every case of varying chloride concentration. Finally, an activation energy model is proposed based on the varying activation energies in relation to the coupled variation in chloride concentration and ambient temperature. Moreover, in this paper some interesting open ended queries, facts and findings related to the above area of research are also presented which open several significant future prospects of research in this direction. Reinforced concrete structures exposed to aggressive environments such as severe chloride attack coupled with high temperature suffer from accelerated corrosion. The objective of this paper is to model and verify the effect of temperature on chloride induced corrosion potential and corrosion rate of steel in concrete by incorporating novel approach towards computation of individual averaged activation energies based on Arrhenius plot. This paper presents a semi-empirical corrosion modeling approach which obeys the basic corrosion science laws and is also verified by the experimentation involving a wide range of chloride and temperature variations. The modeling task has been incorporated by the use of a concrete durability non-linear FEM model as a computational platform on which the coupled temperature-chloride induced corrosion throughout the life of reinforced concrete structures is examined in both space and time domains.