Efecto del árido asfáltico reciclado sobre la durabilidad de un pavimento de hormigón

Autores/as

DOI:

https://doi.org/10.3989/mc.2024.356823

Palabras clave:

Pavimento asfáltico reciclado, Carretera de hormigón, Durabilidad, Corrosión, Ataque ácido

Resumen


El uso de áridos reciclados en lugar de áridos naturales en el hormigón reduce la contaminación ambiental y los costes del hormigón. El árido de Pavimento Asfáltico Reciclado (RAP) utilizado como árido reciclado tiene una menor absorción de agua que el árido natural debido a su estructura bituminosa, lo que reduce el requerimiento de agua del hormigón fresco. En este estudio el objetivo fue determinar el uso óptimo de partículas de RAP como árido en hormigón para pavimentos lisos y determinar sus propiedades durables. Para ello se utilizó RAP en lugar de los áridos de piedra triturada utilizados en la construcción de carreteras con hormigón. Se utilizó RAP reemplazando el 0%, 25%, 50% y 100% del árido de piedra triturada. El hormigón producido tenía un contenido en cemento 350 kg/m3 y la relación agua/cemento se mantuvo constante en 0,45. Se determinó la trabajabilidad en fresco y el contenido de aire de los hormigones que contienen RAP. También se determinaron la resistencia a la compresión, la resistencia a la tracción, el valor de resistividad eléctrica y la prueba de corrosión acelerada de hormigones endurecidos. Igualmente, se evaluó la absorción de agua y porcentaje de porosidad, la resistencia al ataque ácido, la frecuencia de pulso ultrasónico y la microestrucutra mediante microscopio electrónico de barrido (MEB) y difractómetro de rayos X (DRX). En los resultados experimentales se ha observado que el uso de una relación RAP del 25% y 50% se mantiene dentro de los valores límite para pavimentos de hormigón. Se recomienda su uso en carreteras de hormigón armado que estarán expuestas a condiciones ambientales adversas por su alta resistencia a la corrosión, gracias a su característica anticorrosión.

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Publicado

2024-03-25

Cómo citar

Uygunoğlu, T., Topçu, İlker B., & Çinar Resuloğullari, E. (2024). Efecto del árido asfáltico reciclado sobre la durabilidad de un pavimento de hormigón. Materiales De Construcción, 74(353), e338. https://doi.org/10.3989/mc.2024.356823

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Datos de los fondos

Afyon Kocatepe Üniversitesi
Números de la subvención 16.MUH.ALTY.05.