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    Recycled asphalt mixtures produced with high percentage of different waste materials

    ProjectPLASTIROADS
    TitleRecycled asphalt mixtures produced with high percentage of different waste materials
    Publication TypePapers in International Journals
    Year of Publication2015
    AuthorsAbreu L. P. F., Oliveira J. R. M., Silva H. M. R. D., and Fonseca P. V.
    Abstract

    The use of sustainable solutions in construction is not just an option, but is increasingly becoming a need of the Society. Thus, nowadays the recycling of waste materials is a growing technology that needs to be continuously improved, namely by researching new solutions for waste valorisation and by increasing the amount of wastes reused. In the paving industry, the reuse of reclaimed asphalt (RA) is becoming common practice, but needs further research work. Thus, this study aims to increase the incorporation of RA and other waste materials in the production of recycled asphalt mixtures in order to improve their mechanical, environmental and economic performance. Recycled mixtures with 50% RA were analysed in this study, including: i) RA selection, preparation and characterization; ii) incorporation of other waste materials as binder additives or modifiers, like used motor oil (UMO) and waste high density polyethylene (HDPE); iii) production of different mixtures (without additives; with UMO; with UMO and HDPE) and comparison of their performance in order to assess the main advantages of each solution. With this study it was concluded that up to 7.5 % of UMO and 4.0 % of HDPE can be used in a new modified binder for asphalt mixtures with 50 % of RA, which have excellent properties concerning the rutting with WTS = 0.02 mm/103 cycles, the fatigue resistance with ε6 = 160.4, and water sensitivity with an ITSR of 81.9 %.

    JournalConstruction and Building Materials
    Volume84
    Pagination230-238
    Date Published2015-06-01
    PublisherElsevier B.V.
    ISSN0950-0618
    DOI10.1016/j.conbuildmat.2015.03.063
    KeywordsHigh-density Polyethylene (HDPE), Mixture performance, Pavement recycling, Reclaimed asphalt (RA), Rejuvenator, Used motor oil, Waste materials
    RightsopenAccess
    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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