PATOLOGIAS NOS PILARES DE CONCRETO DE UMA EDIFICAÇÃO RESIDENCIAL INTERROMPIDA: um estudo de caso na cidade de Varginha, MG

Abstract

This article resulted from a case study regarding the pathological manifestations that occurred in the pillars of an interrupted residential building located in the city of Varginha, MG. Reinforced concrete, like other materials, is subject to aging and deterioration processes resulting from its use and its interaction with environmental agents. Design, executive and material flaws in concrete have the potential to cause pathological manifestations in order to compromise the strength, performance and durability of concrete structures. The objective of this work was to evaluate the pathologies that occurred in the pillars of a building that was discontinued more than 20 years ago, in order to prepare a preliminary diagnosis of the situation. To this end, a bibliographical research was carried out on studies, standards and procedures for investigation and diagnosis in reinforced concrete structures. With an in loco view, information was gathered by visual inspection and the concrete carbonation test with 1.0% phenolphthalein solution was applied. It was found, in the most damaged pillars, the insufficient covering of the reinforcements, the presence of small concrete niches and the generalized corrosion of the reinforcements due to the carbonation of the concrete. There was a need to apply other tests on the pillars of the building for the elaboration of a more rigorous diagnosis and definition of the intervention plan.