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Characterization of rubberized asphalt for railway sub-ballasts
Fernando Martínez Soto
(Autor)
·
Gaetano Di Mino
(Autor)
·
LAP Lambert Academic Publishing
· Tapa Blanda
Characterization of rubberized asphalt for railway sub-ballasts - Martínez Soto, Fernando ; Di Mino, Gaetano
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Reseña del libro "Characterization of rubberized asphalt for railway sub-ballasts"
The use of a bituminous sub-ballast layer has been pointed out as an exciting alternative to the granular sub-ballast design traditionally applied in most railroad tracks. Frequently, unbound granular materials are replaced by bituminous sub-ballast that provide additional benefits to the subgrade protection. Much research has been conducted on finding other alternative material to be used as a modifier in asphalt mixes to improve its properties. Rubberized asphalt mixtures (RUMAC) are regarded as a proper solution for improving the strength of the rail-track section. This work presents a laboratory evaluation of the performance of HMA-DRY bituminous mixes to study its application as sustainable railway sub-ballast manufactured from scrap tires at the end of their service life. Several tests were used and different techniques for mixing-compaction (Superpave, Marshall, ASRC...). The research presented was carried out as part of the Marie Curie Initial Training Network (ITN) action, FP7-PEOPLE-2013-ITN. This project has received funding from the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement n 607524.
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