Influencia de sulfuros metálicos en la resistencia del concreto con áridos de la cantera Tucsipampa, Huancavelica: Influence of metal sulfides on the strength of concrete with aggregates from the Tucsipampa quarry, Huancavelica

Influencia de sulfuros metálicos en la resistencia del concreto con áridos de la cantera Tucsipampa, Huancavelica

Abstract

This study analyzes the influence of metal sulfides present in aggregates from the Tucsipampa quarry, located in the province of Angaraes, Huancavelica, on the mechanical strength of concrete. The presence of minerals such as pyrite, chalcopyrite, and arsenopyrite was identified, which, when reacting with water and oxygen, generate byproducts that affect the durability and strength of concrete. Through physical-mechanical tests and petrographic analysis, it was determined that mixtures incorporating these aggregates present a significant decrease in their compressive strength, especially at older curing ages. Metal sulfides cause expansive reactions and increase internal porosity, compromising the concrete structure. As a result, it is concluded that the Tucsipampa aggregates require pretreatment or replacement with sulfide-free materials for use in civil works. This study seeks to raise awareness about the importance of mineralogical analysis in aggregates and contribute to improving the quality of construction in areas with a high presence of metal sulfides.