Análise da corrosão nas comportas metálicas da barragem do rio Bacanga, para propor um método de proteção anticorrosivo

Abstract

The present work has the objective of analyzing the corrosion on the metallic surfaces of the floodgates of the Bacanga dam to propose a method of anticorrosive protection. Initially bibliographical researches were done referring to the proposed theme. Afterwards, visual inspections were carried out in loko to evaluate the degree of corrosion propagation in the gates and aggressors causing the corrosive phenomenon. Soon after the visual inspections, tests were carried out to verify the corrosion potential that the sluice material has in its service environment; Value of the hydrogenation potential (pH), to verify its influence on the corrosion process of the floodgates; And dissolved oxygen (OD) of the Bacanga dam water, in order to verify its influence on the environmental impacts and adjacent neighborhoods. With the results obtained, it is concluded that, it is necessary to use a cathodic protection method for sacrificial anode, since it is a very efficient method for the service environment to which the floodgates are exposed (marine environment), aiming at Inhibit the propagation of corrosion on their surfaces in the Bacanga dam