Evaluación del desempeño de morteros innovadores de Geopolímeros, cementos híbridos y cemento Portland a través de indicadores de durabilidad como el coeficiente de difusión, resistencia a la corrosión acelerada y resistividad eléctrica

Abstract

Concrete reinforced structures are susceptible to degradation over time due to external agents, poor dosages, among other factors. These affected elements accelerate corrosion problems of the reinforcing steel bar, which eventually reduce the useful life of the infrastructure. The present study proposes to carry out an analysis of samples of novel concretes, such as Geopolymers and hybrid cements, which will be subjected to accelerated corrosion, electrical resistivity and chloride diffusion tests, comparing them with commercial cement-based concretes. These tests will establish durability indicators that will help evaluate the performance of new structural construction materials, made with local raw materials, with a low carbon footprint, contributing to the sustainability of the Ecuadorian construction industry. The results obtained after carrying out the laboratory tests demonstrated that the Geopolymer samples presented less corrosion in the reinforcing steel bar, had a lower permeability against the penetration of chlorides and resisted a greater passage of electric current through the shown in comparison with hybrid cements and traditional cement. With this we can establish that Geopolymers have good performance against these external agents that cause damage to the integrity of buildings and could be used as construction materials. Keywords: Geopolymers, Accelerated Corrosion, Hybrid Cement, Electrical Resistivity, Chloride Diffusion.