Author
Jiayu Wang
Bio: Jiayu Wang is an academic researcher from Tongji University. The author has contributed to research in topics: Asphalt & Dynamic shear rheometer. The author has an hindex of 11, co-authored 17 publications receiving 365 citations.
Papers
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TL;DR: In this article, a column chromatography was applied to collect sufficient SARA (Saturates, Aromatics, Resins and Asphaltenes), and the Dynamic Shear Rheometer (DSR) test was used to develop the viscoelastic master curves for binders and their subsets.
117 citations
TL;DR: In this article, a series of binder and mixture tests were conducted to investigate mechanical performances, the life-cycle assessment (LCA) was used to evaluate environmental impacts, it was found that the addition of multiple-polymer resulted in excellent high temperature performance with high rutting factor and softening point, but it led to large energy consumption and GHG emission.
90 citations
TL;DR: In this paper, the synthesis method, chemical structure, and engineering properties of polyurethane (PU) materials were first introduced briefly, and the practical applications of PU materials in pavement engineering at present were summarized, mainly including PU-modified asphalt, PU-bonded mixture, PU sealant, and PU foam injection.
54 citations
TL;DR: In this paper, polyethylenes (PE) and a multi-polymer (a type of anti-rutting agent) were incorporated into asphalt binders at four contents and the properties of polymer-asphalt composite systems were investigated through chemical functional group, molecular size, thermal behavior and rheological characteristics.
53 citations
TL;DR: In this article, the authors found that the shear mode tests were the most common methods to verify bond strength and some non-destructive tests were becoming more and more useful to investigate tack coat properties.
53 citations
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TL;DR: In this paper, Fourier transform infrared spectroscopy (FTIR) has been widely used as a fast and accurate tool for detecting and analyzing organic materials for several decades since it was initially introduced to study the asphalt material.
170 citations
TL;DR: In this paper, the authors reviewed and discussed the classification of cold recycling, the scope of application, raw materials, mix design procedure and construction technology, test method, pavement performance.
165 citations
TL;DR: In this paper, a review of the existing rutting solutions and test methods for asphalt pavement is presented, which is expected to provide an overall insight on the existing solutions and recommend future studying areas relevant to the problem of permanent deformation of asphalt pavement.
144 citations
TL;DR: In this article, a comparative review of the recycled polymers most commonly studied as bitumen modifiers: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ethyl vinyl acetate (EVA), and ground tire rubber (GTR) is presented.
Abstract: The use of polymer-modified binders in asphalt mixtures has become more widespread due to their reduced thermal susceptibility and improved rutting and fatigue resistance. Nevertheless, their high cost limits their application, thus making the use of reclaimed polymers (RP) an interesting alternative for both reducing price and extending the service life of pavements. This paper; therefore, presents a comparative review of the recycled polymers most commonly studied as bitumen modifiers: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ethyl vinyl acetate (EVA), and ground tire rubber (GTR), in order to facilitate their selection and extend the use of the bitumen. The differences in terms of melting point, mixing conditions, and maximum quantity of added polymer are analyzed. Moreover, their effect on the mechanical behavior of the asphalt binders and their stability with and without the use of additives is presented. According to the literature revision, the performance of the new binder is more influenced by the kind of polymer that was incorporated and the mixing conditions than by the base bitumen that was chosen, although rheological evaluation is needed to fully understand the modification mechanisms of the modified binder. In general terms, plastomers have a stronger effect in terms of increasing the stiffness of the bitumen in comparison with crumb rubber (elastomers), thus providing an improved rutting resistance. The joint use of polyethylene (plastomer) and crumb rubber (elastomer) can be an interesting option for its recycling potential and mechanical performance, although further study is needed to achieve stable bitumen across the entire range of temperatures; additives, such as maleic anhydride (MA), are commonly employed to improve the stability of the binder and enhance its characteristics, but their use could limit the economic benefits of using recycled materials.
122 citations
TL;DR: In this article, a column chromatography was applied to collect sufficient SARA (Saturates, Aromatics, Resins and Asphaltenes), and the Dynamic Shear Rheometer (DSR) test was used to develop the viscoelastic master curves for binders and their subsets.
117 citations