Hot Mixing Behavior and Curing Process of Epoxy Asphalt
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第3期
论文作者：李华伟 WEI Wei ZHANG Chao XU Feifan LI Xin JING Peng 朱泉峣 DING Qingjun YAN Boxiang
文章页码：605 - 610
摘 要：A new hot mixed epoxy asphalt system was developed.The reaction process of epoxy resin was characterized by Fourier transform infrared spectroscopy (FTIR).The viscosity was investigated by Brinell viscometer when epoxy resin was mixed with asphalt.The glass transition temperature (T_g),homogeneity,thermal stability and viscoelasticity of epoxy asphalt were analyzed by differential scanning calorimetry (DSC),metallographic microscope,thermogravimetric (TG) and dynamic mechanical analysis (DMA).The results showed that the viscosity of epoxy resin modified asphalt reached 1 000 mPa·s for more than 180 minutes at 180 ℃,while the best construction process is mixing at 180 ℃ for 2 hours and curing at 60 ℃ for 4 days.The particle size of asphalt is less than 50 μm.In addition,the mechanical properties of the materials are uniform within the specified pavement thickness.
李华伟1，WEI Wei1,2，ZHANG Chao1，XU Feifan1，LI Xin1，JING Peng1，朱泉峣1，DING Qingjun3，YAN Boxiang3
1. School of Materials Science and Engineering, Wuhan University of Technology2. Department of Physics, Changji University3. State Key Laboratory of Silicate Engineering Center, Wuhan University of Technology
摘 要：A new hot mixed epoxy asphalt system was developed.The reaction process of epoxy resin was characterized by Fourier transform infrared spectroscopy (FTIR).The viscosity was investigated by Brinell viscometer when epoxy resin was mixed with asphalt.The glass transition temperature (T_g),homogeneity,thermal stability and viscoelasticity of epoxy asphalt were analyzed by differential scanning calorimetry (DSC),metallographic microscope,thermogravimetric (TG) and dynamic mechanical analysis (DMA).The results showed that the viscosity of epoxy resin modified asphalt reached 1 000 mPa·s for more than 180 minutes at 180 ℃,while the best construction process is mixing at 180 ℃ for 2 hours and curing at 60 ℃ for 4 days.The particle size of asphalt is less than 50 μm.In addition,the mechanical properties of the materials are uniform within the specified pavement thickness.
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