Per: MARKSSUEL TEIXEIRA MARVILA (UFV - CRP), Daniella Silveira Martins (UFV - CRP), Sandra de Oliveira Sobral (UFV - CRP), Marília Gonçalves Marques (UFV - CRP), Leonardo Carvalho Mesquita (ufv - crp), Jose Alexandre Tostes Linhares Júnior (UENF), afonso rangel garcez de azevedo (UENF)
Abstract:
Over the centuries, humans have always been concerned with constructing structures that meet their needs, accumulating vast technical-scientific knowledge. However, currently, despite this extensive knowledge, there is a construction negligence that, combined with increased environmental aggressiveness and the relentless need for cost-cutting in construction, results in buildings with decreasing quality and durability, for specific cases that have these aggravating factors. This leads to an increasing occurrence of pathological manifestations in contemporary reinforced concrete structures. Thus, the main objective of this article was to evaluate, through an experimental study, the pathologies manifested in concrete specimens resulting from the most common problems during the concreting phase in the Construction Industry: ineffective compaction, excess water in concrete, and improper curing. For this purpose, the samples were subjected to wetting and drying processes to simulate the degradation of a concrete structure under environmental exposure. The conclusions were based on visual analysis, compressive strength, and concrete carbonation conducted before and after the degradation process for comparison purposes. It was concluded that the problems during the concreting phase significantly contribute to the occurrence of stains, cracks, and voids in buildings, with ineffective densified being the concreting problem that causes the most damage to the structure. Finally, the utmost importance of maintaining concrete structures over time was emphasized, as the material deteriorates over time, resulting in a reduction of its initial strength values
