VALORIZACION DE RESIDUOS PLÁSTICOS DE LA INDUSTRIA DE LA AUTOMOCIÓN EN MEZCLAS ASFÁLTICAS
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2020-09-09
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Jaén: Universidad de Jaén
Resumen
El objeto de este estudio es diseñar mezclas asfálticas modificadas con la sustitución parcial de betún y áridos por residuos
de la industria de la automoción (PP y PBT). Se han fabricado mezclas asfálticas control, con betún convencional y
modificado. Los resultados indican que tanto la incorporación de PP como de PBT reducen la densidad de la mezcla
asfáltica, aumenta la proporción de volumen de huecos que poseen los áridos conforme a la del ligante, la tracción indirecta
aumenta con la adicción de PP pero disminuye al aumentar el porcentaje de sustitución de PBT. La resistencia a la
deformación plástica aumenta considerablemente al incorporar PP a la mezcla, mientras que disminuye drásticamente al
aumentar el porcentaje de sustitución de PBT. Los resultados óptimos se obtienen para un 10 % de PP en sustitución del
betún. La sustitución de PBT por áridos da lugar a mezclas asfálticas con propiedades mecánicas inferiores.
The purpose of this study is to design modified asphalt mixtures with partial replacement of bitumen and aggregates with automotive industry residues (PP and PBT). They have been manufactured, with conventional and modified bitumen, control asphalt mixtures. The results indicate that both the incorporation of PP and PBT reduce the density of the asphalt mixture, increases the volume ratio of gaps held by aggregates according to that of the binder, indirect traction increases with PP addiction but decreases as the percentage of PBT substitution increases. Resistance to plastic deformation increases considerably by incorporating PP into the mixture, while drastically decreasing by increasing the percentage of PBT substitution. Optimal results are obtained for 10% PP in place of bitumen. Replacing PBT with aggregates results in asphalt mixtures with lower mechanical properties.
The purpose of this study is to design modified asphalt mixtures with partial replacement of bitumen and aggregates with automotive industry residues (PP and PBT). They have been manufactured, with conventional and modified bitumen, control asphalt mixtures. The results indicate that both the incorporation of PP and PBT reduce the density of the asphalt mixture, increases the volume ratio of gaps held by aggregates according to that of the binder, indirect traction increases with PP addiction but decreases as the percentage of PBT substitution increases. Resistance to plastic deformation increases considerably by incorporating PP into the mixture, while drastically decreasing by increasing the percentage of PBT substitution. Optimal results are obtained for 10% PP in place of bitumen. Replacing PBT with aggregates results in asphalt mixtures with lower mechanical properties.