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  • Development and validation of a laboratory aging method for the accelerated simulation of reclaimed asphalt
    Mollenhauer, Klaus, 1928-1998 ...
    The paper presented first results elaborated during the European Research Project Re-road which aims at the development of techniques for increasing therecycling rates of reclaimed asphalt. During ... service life surface asphalt courses are subjected to aging due to oxidation effects which causes the hardening of the binder and thereby a change in the chemical, physical and mechanical properties of the material. Surface courses often contain highly modified binders as well as special additives for improving the performance characteristics. As these layers inhibit the shortest service lives compared to other road construction layers every year high amounts of reclaimed surfaceasphalt are available for recycling. The question is raised how the reclaimed asphalt consisting of high quality and costly material components can be recycled for optimal added value. To analyze the asphalt mix service life performance and its recyclability during mix design a laboratory method was developed to simulate the real in-situ aging. First the effects of site aging on the binder and asphalt characteristics were presented. Three laboratory aging methods were discussed which aimed the accelerated aging which meets similar property changes as site aging. At last the effects of twodifferent laboratory aging methods on the same SMA mixture were compared.
    Source: Journal of Wuhan University of Technology. Materials science edition. - ISSN 1000-2413 (Vol. 25, no. 4, 2010, str. 631-636)
    Type of material - article, component part
    Publish date - 2010
    Language - english
    COBISS.SI-ID - 4481562
    DOI

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