Traitement électrochimique de réalcalinisation pour la réparation du béton armé dégradé par carbonatation.

摘要

This thesis(theory) has for objective to bring a better knowledge of the réalcalinisation by two processes (impressed current and sacrificial anode) to rehabilitate(discharge) the corrosion of the armatures in a concrete degraded by carbonation. A methodology of the tries(essays) was cleared(released) afin, on one hand, to estimate the efficiency and the durability of treatments(processings) by means of electrochemical characterizations (free potential, resistance of polarization, impedance and current density of corrosion) and of analytical characterizations (qualitative pH, quantitative pH and dosages of alkaline) and on the other hand to verify the possible side effects by means of techniques MEB+EDS, Raman, Porosity Mercury and mechanical tests. The evolution of the nature of the products of corrosion was studied in situ on the armatures