Analysis of the bearing capacity of unbound granular mixtures with rubber particles from scrap tyres when used as sub-ballast

C. Hidalgo-Signes; P. Martínez-Fernández; J. Garzón-Roca; R. Insa-Franco

doi:10.3989/mc.2016.11515

Autores/as

C. Hidalgo-Signes Department of Geotechnical and Geological Engineering, Universitat Politècnica de València (UPV)
P. Martínez-Fernández Department of Transport Engineering and Infrastructure, Universitat Politècnica de València (UPV)
J. Garzón-Roca Department of Geotechnical and Geological Engineering, Universitat Politècnica de València (UPV)
R. Insa-Franco Department of Transport Engineering and Infrastructure, Universitat Politècnica de València (UPV)

DOI:

https://doi.org/10.3989/mc.2016.11515

Palabras clave:

Tratamiento de residuos, Árido, Módulo Elástico, Ciclos, Propiedades mecánicas

Resumen

Los neumáticos fuera de uso son un material de desecho problemático. Para poder reutilizarlos en grandes cantidades, el artículo se centra en el análisis de mezclas granulares sin ligante con un porcentaje variables de partículas de caucho, y su uso como capa de subbalasto ferroviario. La capacidad de soporte de dichas mezclas se estudia mediante ensayos de laboratorio y de campo (ensayos de placa de carga estática y dinámica, y ensayos triaxiales cíclicos). Se evalúa la influencia del contenido de caucho en cada caso. Se ha observado que, a mayor contenido en caucho, se incrementa la deformación permanente y resiliente, y que ninguna de las mezclas experimenta fluencia plástica tras 2,5 millones de ciclos de carga. Considerando los requisitos habituales de capacidad de soporte, el contenido óptimo de caucho es 2,5% en términos de peso. Este porcentaje incrementa la resistencia a la degradación al tiempo que asegura una capacidad de soporte suficiente.

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Citas

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