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  • Open Access


    Water Stability Improvement of Acid Fine Aggregate-Based Asphalt Concrete

    Yihan Sun1,2, Lihua Chu3, Yudong Cheng4,*, Fengxia Chi1,2, Chenchen Zhang1,2, Pengcheng Sun1,2

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.8, pp. 2171-2180, 2023, DOI:10.32604/fdmp.2023.026892

    Abstract In general, acid aggregates are not used in combination with asphalt concrete because of their poor compatibility with the asphalt binder, which typically results in a scarce water stability of the concrete. In the present study, the feasibility of a new approach based on the combination of acid granite fine aggregate with alkaline limestone coarse aggregate and Portland cement filler has been assessed. The mineral and chemical compositions of these three materials have first been analyzed and compared. Then, the effect of different amounts of Portland cement (0%, 25%, 50%, 75% and 100% of the… More >

  • Open Access


    Influence of Hydrodynamic Pore Pressure Damage on the Performance of Hot-Mixed Renewable Asphalt Mixture

    Guodong Zeng1, Chao Li1,*, Yang Fang1, Hongming Huang1,2, Hao Li1,3, Yishen Xu1

    Journal of Renewable Materials, Vol.11, No.5, pp. 2453-2467, 2023, DOI:10.32604/jrm.2023.025871

    Abstract For evaluating the water stability of hot-mixed renewable asphalt mixture (HRM), the traditional methods are all tested under still water conditions. Except for damage in still water conditions, the hydrodynamic pore pressure generated by the tire driving on the surface water has a great impact. Thus, the RAP contents of the HRMs were designed at 0%, 30%, 45% and 60% with AC-25 gradation. Then, the self-designed evaluation methods of water stability and dynamic modulus were studied. Finally, the mechanism of the influence of hydrodynamic pore pressure damage on HRMs was studied. The results show that… More >

  • Open Access


    Development of Soy Protein Plastics Using Functional Chemistry for Short-Life Biodegradable Applications

    David Grewell*, Sean T. Carolan, Gowrishankar Srinivasan

    Journal of Renewable Materials, Vol.1, No.4, pp. 231-241, 2013, DOI:10.7569/JRM.2013.634120

    Abstract : Soy protein plastic formulations were developed through iterative experimental stages to produce waterstable, soy protein isolate (SPI)-based plastic resins. The protein polymer-based materials are glycerol and water plasticized resins that have been described as thermoplastics [1] by some researchers and have been described as materials that behave similar to thermoplastics upon application of heat and pressure [2]. Previous researchers have developed SPI plastic for various applications, all of which were adversely effected by water absorption. The formulations in this research included anhydride chemistries, such as maleic anhydride (MA), phthalic anhydride (PA), and bifunctional chemistries,… More >

  • Open Access


    Development and Field Application of Phosphogypsum-Based Soil Subgrade Stabilizers

    Hongfei Yue1, Aiguo Fang2, Sudong Hua1,*, Zenghuan Gu3, Yu Jia1, Cheng Yang4

    Journal of Renewable Materials, Vol.10, No.8, pp. 2247-2261, 2022, DOI:10.32604/jrm.2022.018901

    Abstract A phosphogypsum-based subgrade stabilizer (PBSS) was formulated using industrial by-product phosphogypsum (PG), mixed with slag and calcium-silicon-rich active material (GSR). The active powder (AP) was used to modify PBSS, and PBSS-AP was obtained. PBSS and PBSS-AP were each mixed with 10% silty soil, and cement and lime (CAL: 5% lime + 2% cement) were used as the traditional material for comparative experiments. Samples were cured under standard conditions, and tested for unconfined compressive strength (UCS), water stability, volume expansion, and leachate, to explore the stabilization effect of the three solidified materials on silty soil. The More >

  • Open Access


    Influence of Water Stability on Bond Performance Between Magnesium Phosphate Cement Mortar and Steel Fibre

    Hu Feng1, Guanghui Liu1, Jiansong Yuan2,*, M. Neaz Sheikh3, Lu Feng4, Jun Zhao1

    Structural Durability & Health Monitoring, Vol.13, No.1, pp. 105-121, 2019, DOI:10.32604/sdhm.2019.04864

    Abstract The fibre pullout test was conducted to investigate the influence of the water stability on the bond behaviour between the Magnesium phosphate cement (MPC) matrix and the steel fibre. The composition of the MPC-matrix and the immersion age of the specimens are experimentally investigated. The average bond strength and the pullout energy are investigated by analysing the experimental results. In addition, the microscopic characteristics of the interface transition zone are investigated using scanning electron microscopy (SEM). The experimental results showed that the bond performance between the MPC-matrix and the steel fibre decreased significantly with the More >

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