Evaluation and monitoring of concrete submitted to microbially-induced deterioration

Umeres M.; Chavez M.; Rodriguez S.; Carrera E. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2020) · DOI: 10.18687/laccei2020.1.1.367

Resumen

Concrete corrosion is one of the main problems of degradation and loss of functionality that can derive into a partial or total collapse of a structure. Each time concrete gets in touch with residual water, water runoffs, or acid drainage in mines, there exists a process denominated Induced Microbial Corrosion, which is caused by sulfurizing bacteria, which generates sulfuric acid too as part of their metabolism. This investigation contemplates the evaluation and monitoring of concrete designs, in which there are study variables associated, for example, water/cement relationship, Filler Calizo addition mineral. This experimental study analyzes: (a) Effectiveness of the proposed additive through a microbiological test, (b) concrete properties in a hard state through destructive and non-destructive laboratory tests, and (c) Concrete resistance to sulfuric acid concentrations. The principal discovery in this investigation concludes with the recommendation of a design of a mixture that inhibits the bacterial growth and reduces the concrete deterioration submitted to sulfuric acid.

Instituciones: Universidad Peruana de Ciencias Aplicadas