Hormigón activado alcalinamente con árido de pavimento asfáltico reciclado
DOI:
https://doi.org/10.3989/mc.2026.393224Palabras clave:
Hormigón Geopolimérico, dolomita, cenizas volantes, análisis microestructural, Áridos de pavimento asfáltico recicladoResumen
El hormigón geopolimérico es una alternativa ecológica al hormigón con cemento que reduce las emisiones de carbono mediante el aprovechamiento de residuos industriales. Este estudio mejora su sostenibilidad incorporando áridos reciclados de pavimento asfáltico (RAP) como sustitutos parciales del árido grueso natural en proporciones de 0%, 20%, 40%, 60%, 80% y 100%, utilizando ceniza volante y dolomita como aglutinantes. El análisis reveló mejoras dentro de un umbral específico de RAP, identificándose el 40% como la proporción óptima. Se observaron fuertes correlaciones (R2 > 0.90) entre la resistencia a compresión, flexión, tracción indirecta y la velocidad del pulso ultrasónico a los 28 y 56 días. Los análisis SEM-EDS indicaron una matriz más densa, mientras que XRD y FTIR confirmaron la formación de geles del tipo C(N)–A–S–H. Estos resultados demuestran el potencial del RAP en el hormigón geopolimérico, promoviendo la construcción sostenible mediante la reutilización eficiente de materiales.
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