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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/6891

    Título
    Study on the conservation of bituminous mixes in high mountain roads and coastal zones
    Autor
    Vega-Zamanillo, Ángel
    Juli-Gándara, Luis
    Calzada Pérez, Miguel A.
    Teijón-López-Zuazo, Evelio
    Publicado en
    R-Evolucionando el transporte
    Editorial
    Universidad de Burgos. Servicio de Publicaciones e Imagen Institucional
    Fecha de publicación
    2021-07
    ISBN
    978-84-18465-12-3
    DOI
    10.36443/10259/6891
    Descripción
    Trabajo presentado en: R-Evolucionando el transporte, XIV Congreso de Ingeniería del Transporte (CIT 2021), realizado en modalidad online los días 6, 7 y 8 de julio de 2021, organizado por la Universidad de Burgos
    Resumen
    The main objective of road conservation is to maintain the characteristics of the platform elements to ensure that vehicle mobility is carried out comfortably and safely. The orographic conditions of Spain, with a large length of high mountain roads and others at sea level; and winter weather events, with low temperatures, wind, water, ice, snow,…, which cause deposits of particles, filler, soils, small metals, or sea salt on the pavement surface, can be dangerous in the circulation of vehicles. One of the traditional methods for maintaining wheel-pavement adhesion is to apply flux products, mainly salt (sodium chloride, NaCl) and calcium chloride (Cl2Ca), solidly or humidified (salt brine). This chemical fluxes have the property of preventing the formation of ice as antifreeze, or facilitating their melting if it has already formed. This research studies the influence of salt in the surface layer of pavement made of hot mix asphalt with conventional binder. The effect of the salt is analyzed under three different conditions: immerse the specimens in salt water; add salt as aggregate in the manufacture of the mix; and submerging the natural aggregate in water with several amounts of salt, dry it and then manufactured the mixture with it. The mechanical parameters of the mixture have been analyzed in the laboratory: density, air voids, adhesion, indirect tensile strength and plastic deformation. To do this, Marshall test, Water Sensitivity Test (ITSR) and Wheel Tracking Test have been performed. The properties of hot mix asphalt do not decrease significantly when it is manufactured of salt added as aggregate, neither when it is submerged in salt water. The bituminous mixture offers negative results when it is manufactured with natural aggregate submerged in water with salt previously, because the adhesion between the aggregate and the binder is low.
    Palabras clave
    Infraestructuras
    Infrastructures
    Materia
    Ingeniería civil
    Civil engineering
    Materiales de construcción
    Building materials
    Vías terrestres
    Roads
    URI
    http://hdl.handle.net/10259/6891
    Versión del editor
    https://doi.org/10.36443/9788418465123
    Relacionado con
    http://hdl.handle.net/10259/6490
    Aparece en las colecciones
    • Congreso de Ingeniería del Transporte CIT 2021 (14º. 2021. Burgos)
    Ficheros en este ítem
    Nombre:
    Vega_CIT2021_719-730.pdf
    Tamaño:
    241.8Kb
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