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Aging Kinetic Equation of Pure Asphalt and Trinidad-Lake-Asphalt-Modified Asphalt

机译：纯沥青和特立尼达-湖-沥青改性沥青的老化动力学方程

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摘要

The measurements of complex modulus G* of asphalt and aged Trinidad-Lake-Asphalt-modified (TLA-modified) asphalt were conducted through dynamic shear rheological test. This parameter was used to model the aging kinetics of both types of asphalt to evaluate and predict the rheological properties at different aging time and temperature. By detailed analysis, it was observed that the aging process of both types of asphalt follows first-order kinetics. Moreover, it was observed that the TLA-modified asphalt possess higher activation energy compared with the pure asphalt. It was also researched that the chemical reaction rate of the TLA-modified asphalt was lower than that of the ordinary asphalt, implying that the former has a more stable nature and TLA could improve the anti-aging properties of asphalt. The chemical reaction rate of TLA-modified asphalt after pressure aging (PAV) was 1.2 times that after rotary-thin-film-oven-testing (RTFOT) which indicating that at the same aging temperature of PAV-aging, i.e., 1 h, is equivalent to 1.2 h of RTFOT-aging.
机译：通过动态剪切流变试验对沥青和老化的特立尼达湖沥青改性（TLA改性）沥青的复数模量G *进行了测量。该参数用于模拟两种类型沥青的老化动力学，以评估和预测在不同老化时间和温度下的流变性能。通过详细分析，可以观察到两种类型的沥青的老化过程均遵循一级动力学。此外，观察到与纯沥青相比，TLA改性的沥青具有更高的活化能。研究还表明，TLA改性沥青的化学反应速率低于普通沥青，表明前者具有更稳定的性质，而TLA可以改善沥青的抗老化性能。 TLA改性沥青在压力老化（PAV）后的化学反应速率是旋转薄膜烤箱测试（RTFOT）后的1.2倍，这表明在相同的PAV老化温度下（即1 h），相当于RTFOT老化1.2小时。

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  • 来源
    《Science of advanced materials》 |2017年第7期|1081-1086|共6页
  • 作者

    Yang Bin; Wei Jianhui; Xie Jianbo; Zhao Zheng;

  • 作者单位

    Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Peoples R China|Minist Educ, Key Lab Disaster Prevent & Struct Safety, Nanning 530004, Peoples R China|Key Lab Disaster Prevent & Engn Safety Guangxi, Nanning 530004, Peoples R China;

    Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Peoples R China;

    Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Peoples R China;

    Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Pure Asphalt; TLA-Modified Asphalt; Aging; Kinetic Equation;

    机译：纯沥青;T​​LA改性沥青;老化;动力学方程;

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