Análise da incidência de corrosão em armaduras de aço para concreto armado em edificações públicas no município de Aragarças-GO

Abstract

This work aimed to verify the incidence of corrosion in structures and to evaluate the frequency of maintenance of reinforced concrete structures in municipal public editions in the city of Aragarças-GO. The work aims to understand how common this pathology is present in public buildings and describe the importance of maintenance for the performance, durability and useful life of a building. Thus, in order to reach the desired objective, a bibliographic survey on the theme was carried out, as well as the definition of a representative sample of public buildings in the municipality. Therefore, after defining the sampling, an inspection of the buildings was carried out and data were collected in loco. Informal interviews with building employees were also conducted. The data collection of the buildings was made through a technical visit where measurements of the structural elements and photographic record of the anomalies were carried out. At the city hall, information on the design of buildings that presented corrosion was analyzed. The data point to constructive defects, such as lack of spacers, and error in the concrete mix as the probable factors that cause or aggravate the corrosion process. It is also worth mentioning that have not found any structural design of buildings currently in use. In some structures, it was not possible to visually identify the place where structures are inserted inside the buildings. It is even impossible to identify possible design errors. Thus, it was concluded that 50% of the municipal public buildings in Aragarças have the phenomenon of reinforcement corrosion. The major factor that contributes to these anomalies is the lack of maintenance that aims to prevent and correct the problem.