Aspectos estructurales del hormigón que incorpora áridos gruesos reciclados de residuos de construcción y demolición
DOI:
https://doi.org/10.3989/mc.2024.360023Palabras clave:
Árido, Hormigón, Productos de hidratación, Formación de etringita, Cemento portlandResumen
Este estudio explora el potencial del reciclaje de residuos de construcción y demolición en áridos gruesos reciclados (RCA) para reducir la generación de desechos y la huella de carbono, utilizando un esfuerzo de compactación estándar para calcular la resistencia a la compresión y la densidad de empaquetado de partículas en un volumen cilíndrico específico. La investigación evalúa el impacto del RCA en la trabajabilidad, resistencia a la compresión, resistencia a flexión, tensión por flexión, retracción por secado, resistividad eléctrica, penetración rápida de cloruro y características microestructurales utilizando XRD, SEM y EDAX. Los resultados muestran que aumentar el porcentaje de reemplazo más allá del valor óptimo (RCA 25) tiene efectos perjudiciales en la resistencia y microestructura del hormigón. El RCA 25 tiene una resistencia a la compresión, a flexión y tracción superior en un 11.56%, 3.06% y 5.17%, respectivamente, en comparación con el hormigón de referencia. Además, presenta un aumento del 5.23% en la retracción por secado, una resistividad eléctrica un 8.79% mayor y una resistencia a la penetración de cloruros un 4.68% superior al hormigón.
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