Reinforced concrete structures exposed to aggressive environments, such as nuclear and offshore structures, may be subjected to several hydric and ionic transfers that can affect their service life as well as their long-term durability. This type of structures may be sometimes difficult to access for inspection, thus several Non-Destructive testing Techniques (NDT) were developed in order to monitor and to assess such concrete structures. The work presented in this paper consisted on studying the evolution of the hydration phase of a concrete formulated with CEM I, by evaluating its resistivity over time and depth using embedded resistivity sensors connected to a resistivity meter. Resistivity profiles obtained using these embedded sensors were compared to surface resistivity measurements carried out using a Wenner device. Moreover, this experimental campaign was validated by numerical hydration modelling, showing the evolution of the general kinetic coefficient of concrete with respect to time along its hydration phase.