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  • Effect of freeze-thaw cycles on the resilient moduli and permanent deformation of RAP/natural aggregate unbound base mixtures [Elektronski vir]
    Domitrović, Josipa ; Rukavina, Tatjana ; Lenart, Stanislav
    This paper presents an experimental study to evaluate the effect of freeze-thaw cycles on the resilient modulus and permanent deformation of reclaimed asphalt pavement (RAP)/natural aggregate ... mixtures for the construction of unbound base layers. A repeated load triaxial test was carried out on RAP and crushed limestone mixtures with varying RAP content (0%, 20%, 35%, and 50% of dry mass), on both standard samples and samples exposed to fourteen freeze-thaw cycles. Freeze-thaw conditioning resulted in a decrease of resilient modulus values and an increase of permanent deformation. This trend was most pronounced on the mixture with 0% RAP. Mixtures with 35% RAP exhibited stable resilient behavior and lowest change in accumulation of permanent deformation after freeze-thaw conditioning. With an increase in RAP content, the sensitivity of the mixtures to freeze-thaw cycling in regards to resilient and permanent deformation behavior is reduced, but only up to a certain RAP content.
    Source: Transportation geotechnics. - ISSN 2214-3912 (Vol. 18, Mar. 2019, str. 83-91)
    Type of material - e-article
    Publish date - 2019
    Language - english
    COBISS.SI-ID - 2411623

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S2214391218302253
    DOI

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