Corrosão nas estruturas de concreto armado: diagnóstico e tratamento

Abstract

This paper aims to make a literature review of the corrosive processes in the concrete making a survey of the experiences of several authors and researchers in the corrosion area to map as accurately as possible the conditions that affect concrete structures in coastal regions and the best form of intervention to prevent or reduce degradation of the materials comprising these structures. It is made an enumeration of various diseases caused by the degradation of concrete and its symptomatology. This information is essential for discussion and choice of what will be the best intervention methods. Next are presented the different intervention systems aimed at, according to the situation, the intervention in the mass of concrete or equipment, including electrochemical techniques most recently used to retrieve the pH of the concrete. Finally are exposed real cases of structures suffering from corrosion caused by contamination by chloride ions and the carbonation and methods for each case among the cases cited is the bridge José Sarney, important bridge the metropolitan area of Sao Luis, MA