Evaluation of bituminous sub-ballast manufactured at low temperatures as an alternative for the construction of more sustainable railway structures

  1. L. Pirozzolo
  2. M. Sol-Sánchez
  3. F. Moreno-Navarro
  4. G. Martínez-Montes
  5. M. C. Rubio-Gámez
Revista:
Materiales de construcción

ISSN: 0465-2746

Año de publicación: 2017

Volumen: 67

Número: 327

Tipo: Artículo

DOI: 10.3989/MC.2017.04816 DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Materiales de construcción

Resumen

Las mezclas bituminosas en caliente en infraestructuras ferroviarias son una alternativa cada vez más extendida en vías de altas prestaciones, para mejorar la capacidad portante de la vía y el grado de protección del resto de la subestructura. Sin embargo, el sub-balasto bituminoso presenta una serie de limitaciones asociadas al posible incremento de costes de construcción y a problemas medioambientales derivados de la utilización de mezclas bituminosas en caliente fabricadas a 160°C. Este trabajo, tiene como objetivo estudiar la posibilidad de utilizar WMA fabricado a temperaturas inferiores, como sub-balasto bituminoso con el fin de ahorrar energía, reducir las emisiones y disminuir los costes constructivos de esta capa. Así, este estudio se centra en la comparación entre el comportamiento mecánico de mezclas bituminosas semicalientes y calientes como sub-balasto, bajo diferentes condiciones de carga. Los resultados muestran que el sub-balasto semicaliente presenta una respuesta mecánica comparable a las soluciones convencionales.

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Fuente de los datos: Dialnet