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    Mechanical, surface and environmental evaluation of stone mastic asphalt mixtures with advanced asphalt binders using waste materials

    TitleMechanical, surface and environmental evaluation of stone mastic asphalt mixtures with advanced asphalt binders using waste materials
    Publication TypePapers in International Journals
    Year of Publication2019
    AuthorsFernandes S. R. M., Silva H. M. R. D., and Oliveira J. R. M.
    Abstract

    The reuse of waste materials in asphalt mixtures has been recently investigated, in order to develop new sustainable solutions for the road-paving industry. Such materials should improve the mechanical performance and provide safe/comfortable pavement surface courses for road users, without compromising their environmental performance. Thus, the aim of this study is to evaluate the mechanical, surface and environmental properties of stone mastic asphalt (SMA) mixtures produced with forward-looking asphalt binders incorporating waste materials. These binders were designed to maximise the waste material content using motor oil, high-density polyethylene, styrene–butadiene–styrene and crumb rubber, while performing so well as a commercial modified bitumen. Finally, the overall performance of the SMA mixtures produced with the selected binders was evaluated. It was concluded that these mixtures improve the water sensitivity, fatigue cracking and permanent deformation performance. The requirements for macrotexture, skid resistance and presence of heavy metals in leachates of these mixtures were similarly fulfilled. Thus, this work shows that new asphalt mixtures with waste materials can be used in road-paving works to improve the performance without compromising human and environmental safety.

    JournalRoad Materials and Pavement Design
    Volume20
    Issue2
    Pagination316 - 333
    Date Published2019-02-17
    PublisherTaylor & Francis Group
    ISSN1468-0629
    DOI10.1080/14680629.2017.1387169
    URLhttps://doi.org/10.1080/14680629.2017.1387169
    KeywordsLeaching, Mechanical performance, Modified bitumen, stone mastic asphalt, surface properties, Waste materials
    RightsembargoedAccess (3 Years)
    Peer reviewedyes
    Statuspublished
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    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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