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  • Open Access

    ARTICLE

    Development of SBS composite modified asphalt incorporating polydopamine-enhanced MoS2

    Y. L. Hou*, L. Z Bai

    Chalcogenide Letters, Vol.21, No.10, pp. 785-796, 2024, DOI:10.15251/CL.2024.2110.785

    Abstract This study investigated the development of a novel composite modified asphalt incorporating PDA-MoS2 into styrene-butadiene-styrene (SBS) modified asphalt. The successful synthesis of PDA-MoS2 was confirmed through various characterization techniques. The incorporation of PDA-MoS2 into SBS modified asphalt resulted in significant improvements in performance properties. With a PDA-MoS2 content of 0.7 wt%, the modified asphalt showed a notable 15.1% rise in softening point and a 24% drop in penetration in comparison to the control SBS modified asphalt. Dynamic Shear Rheometer tests revealed a 2.4-fold increase in the rutting factor at 60°C. Multiple Stress Creep Recovery tests demonstrated enhanced… More >

  • Open Access

    ARTICLE

    Performance Characterization of CR/PU Asphalt for Potential Application in Assembled Fast-Repairing Engineering

    Hong Pang1, Ao Lu1, Ming Xiong1, Chen Chen1, Xian Cao1, Xiong Xu2,3,*, Jing Wang1

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.5, pp. 1063-1074, 2024, DOI:10.32604/fdmp.2023.044000 - 07 June 2024

    Abstract Conventional repairing methods for asphalt pavement have some inconveniences, such as insufficient strength, and are typically time-consuming. To address these issues, this study proposes a new technological method to design and prepare a high-performance assembled asphalt concrete block for fast repair of the potholes. A series of composite modified asphalt binders with 10% crumb rubber (CR) and different dosages (0%, 1%, 3%, 5%) of polyurethane (PU) are examined to determine the optimized binder. Subsequently, the corresponding asphalt mixtures are prepared for further comparison and assessment of engineering properties, such as moisture-induced damage, high-temperature deformation, and More >

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