The French national radioactive waste management agency (Andra) aims to insure thedurability of thick concrete structures used for waste repository. To this end, concretewater content is one of the main parameters governing the long-term durability of thesestructures, therefore an accurate estimation of its profile is important. This researchfocuses on an electrical resistivity technique, which is highly sensitive to the watercontent in concrete.Our work aims to design a prototype of embedded sensors in concrete structures tomeasure the resistivity profile with depth and the water content profile after calibration.The study highlights the capability of different types of sensors to measure theresistivity profile of a 30cm-thick concrete section. Several numerical studies areconducted to design different possible configurations of the embedded sensors and tooptimize the sensors geometry in order to obtain the most relevant configuration.Several types of sensors are tested on small specimens; for instance Wenner type(aligned and equidistant four-pin probe resistivity method), proved capable ofidentifying the resistivity profile. The methodology for observing, measuring andmonitoring the resistivity profile over time is studied.