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    Rheological characterization of EVA and HDPE polymer modified bitumens under large deformation at service temperature

    TitleRheological characterization of EVA and HDPE polymer modified bitumens under large deformation at service temperature
    Publication TypePapers in International Journals
    Year of Publication2016
    AuthorsGonzález E., Costa L. M. B., Silva H. M. R. D., and Hilliou L.
    Abstract

    Large amplitude oscillatory shear (LAOS) coupled with Fourier transform rheology (FTR) was used for the first time to characterize the large deformation behavior of selected bituminous binders at service temperature. Two polymer modified bitumens (PMB) containing recycled EVA and HDPE and two unmodified bitumens were tested with LAOS-FTR. The LAOS-FTR response of all binders was compared at same frequency (experimental approach) and at either same Deborah number or same phase shift angle δ (rheological approach). In all the approaches, LAOS-FTR results allowed to differentiate between all the nonlinear mechanical characteristics of the tested binders.  All binders show LAOS-FTR patterns reminiscent from colloidal dispersions and emulsions. EVA PMB showed the lowest nonlinear levels compared to HDPE PMB, which is more prone to microstructural changes induced by the range of shear strains tested in LAOS.

    JournalConstruction and Building Materials
    Volume112
    Pagination756 - 764
    Date Published2016-06-01
    PublisherElsevier
    ISSN0950-0618
    DOI10.1016/j.conbuildmat.2016.02.192.
    KeywordsFT-Rheology, LAOS (Large amplitude oscillatory shear), nonlinear rheology, polymer modified bitumen
    RightsrestrictedAccess
    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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