Electrical Model of a Bulk Concrete and Analysis of Its Frequency-Dependent Electrical Resistivity

Electrical resistivity (ER) becomes an essential tool for decision- making by managers responsible for plans and strategies for concrete structures maintenance. ER is a non-destructive technique for evaluating reinforced concrete structures, mainly regarding reinforcement corrosion risk due to its easy operation, reliability, and quick and low-cost results. Although ER is a widely used technique, little clear information is discussed in the literature regarding the concrete role as an electrical circuit component. Thus, this chapter presents concepts about circuit types applied to understand electrical resistivity and a comprehensive analysis regarding the concrete role in different electrical circuit types. The main parameters that most influence concrete resistivity are discussed.