Assessment of Steel Reinforcement Corrosion State by Parameters of Potentiodynamic Diagrams

Abstract

The environment of the steel reinforcement has a significant impact on the durability and service life of a concrete structure. It is not only the presence of aggressive substances from the environment, but also the own composition of concrete mixture. The use of new types of cements, additives and admixtures must be preceded by verification, if they themselves shall not initiate the corrosion. There is a need for closer physical expression of the parameters of the potentiodynamic diagrams allowing reliable assessment of the influence of the surrounding environment on electrochemical behaviour of reinforcement. The analysis of zero retardation limits of potentiodynamic curves is presented.

Reliability of Non - Destructive Technologies in Corrosion Detection of Reinforced Concrete Structures

“…These percentages were 0 %, 1.5 %, 3 %, and 4 %, respectively. It is a practical chloride content that has been found in literature [7][8].…”

The Influence of the Prestressing Level of the Fully Threaded Anchor Bar on the Corrosion Rate

“…Therefore, it is necessary to perform the accelerated corrosion test on prestressing steel bars at different levels of applied tensile stress. Since the corrosion rate of steel in atmospheric corrosion conditions is relatively slow [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], it is difficult to achieve the expected degree of corrosion in a short period of time. Therefore, electrochemical corrosion was used in the presented experimental measurements [32][33][34][35], which achieved a significant degree of corrosion in a relatively short time by analyzing the effect of corrosion on prestressing steel bars.…”