Análise das influências da corrosão nas propriedades mecânicas dos materiais que constituem a ponte do ipase

Abstract

The aggressive environments such as rivers, provides corrosion conditions associated with other associated diseases that attack the concrete and the metal material bridges, which can cause serious consequences to the life and functionality of the structure. This paper aims to make a relationship between environmental aggressiveness and corrosive process affecting the bridge that connects the neighborhoods Caratatiua-Maranhão and New Maranhão New-Caratatitua the city of Sao Luis do Maranhao. For the analysis of this relationship, it became necessary to make a review on the corrosion processes in reinforced concrete structures, in order to characterize the conditions that affect the bridge study and implement actions to help prevent or reduce the degradation of bridge materials . In this literature review, the mechanisms and the electrochemistry involved in the corrosion process are analyzed, and will be demonstrated some concepts about the corrosion mechanism according to some authors. There will also be analyzed microconstituents of concrete and its porosity. There will also be analyzed the causes and origin of this phenomenon in reinforced concrete structures which will provide a better understanding of how the corrosion mechanism occurs in concrete armor, even if a protection from the outside environment. Knowing some characteristics of the concrete and which are the most common diseases, it becomes possible to make a mapping of the problems found in the elements of the bridge under consideration, and thus can choose which methods of treatment and prevention should be implemented in order to increase the life of the bridge in the study. They are also presented considerations about the actual conditions of the bridge study, done through a site visit. In order to know what the actual structural conditions of the bridge, the feasibility will be analyzed to perform some tests that aim to show the load capacity of the elements of the bridge