Escoria de cobre: una alternativa sustentable para la construcción de pavimentos rígidos
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Date
2025
Journal Title
Journal ISSN
Volume Title
Publisher
Departamento de Ingeniería Civil de la Universidad Católica de la Santísima Concepción, Chile.
Abstract
Este artículo investiga el uso de escoria de cobre (EC), residuo masivo de la industria minera, como material cementicio suplementario (MCS) en mezclas de hormigón con posibles usos en pavimentos, evaluando las propiedades mecánicas y durabilidad frente a agentes agresivos. Experimentalmente, se observó que reemplazar hasta un 20% (volumen) del cemento con EC no reduce significativamente la resistencia a la flexo-tracción (FT), y que un 10% de EC aumenta en un 3,3% la resistencia a la FT a largo plazo (360 días) respecto al hormigón de referencia (sin EC). Además, se registró una reducción de la profundidad de penetración de agua en un 36% y 38%, a los 28 y 90 días respectivamente. Se concluye que la EC tiene un uso potencial para mezclas de hormigón para pavimentos, con un adecuado desempeño estructural y un menor impacto medioambiental, aunque son necesarios estudios adicionales específicos de pavimentación para validar estos hallazgos
This article investigates the use of copper slag (CS), a massive waste product of the mining industry, as a supplementary cementitious material (SCM) in concrete mixes for potential pavement applications, evaluating its mechanical properties and durability against aggressive agents. Experimentally, it was observed that replacing up to 20% (volume) of the cement with CS does not significantly reduce flexural and tensile strength (FT), and that 10% CS increases long-term FT strength (360 days) by 3.3% compared to the reference concrete (without CS). Furthermore, a reduction in water penetration depth of 36% and 38% was recorded at 28 and 90 days, respectively. It is concluded that CS has potential use in concrete mixes for pavements, with adequate structural performance and a lower environmental impact, although further specific pavement studies are needed to validate these findings.
This article investigates the use of copper slag (CS), a massive waste product of the mining industry, as a supplementary cementitious material (SCM) in concrete mixes for potential pavement applications, evaluating its mechanical properties and durability against aggressive agents. Experimentally, it was observed that replacing up to 20% (volume) of the cement with CS does not significantly reduce flexural and tensile strength (FT), and that 10% CS increases long-term FT strength (360 days) by 3.3% compared to the reference concrete (without CS). Furthermore, a reduction in water penetration depth of 36% and 38% was recorded at 28 and 90 days, respectively. It is concluded that CS has potential use in concrete mixes for pavements, with adequate structural performance and a lower environmental impact, although further specific pavement studies are needed to validate these findings.
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Keywords
Escoria de cobre, Material cementicio suplementario, Pavimentos de hormigón, Durabilidad, Copper slag, Cementitious material, Concrete pavements, Durability