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首页> 外文期刊>Energy & fuels >Using Thermal Analytical Techniques To Study Rejuvenators and Rejuvenated Reclaimed Asphalt Pavement Binders
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Using Thermal Analytical Techniques To Study Rejuvenators and Rejuvenated Reclaimed Asphalt Pavement Binders

机译：使用热分析技术研究再生剂和再生的再生沥青路面粘结剂

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摘要

Rejuvenators are added to reclaimed asphalt pavement (RAP) binders to enhance their low-temperature and fatigue performance. The effectiveness of a rejuvenator depends upon many factors, including the properties of the rejuvenator as well as the compatibility between the rejuvenator and the base binder. The thermal properties of a rejuvenator can vary greatly based on its chemical composition. This research focuses on understanding the effects of the thermal properties of rejuvenators on the rheological properties of the rejuvenated binders, particularly in relation to the critical low temperature. In this research, an extracted and recovered RAP binder was blended with two different rejuvenators at a dosage of 10% by weight of the binder and the change in the critical temperatures was assessed using rheological measurements. Differential scanning calorimetry (DSC) was used to obtain the crystallization and melting points of the rejuvenators before and after aging. Modulated differential scanning calorimetry (MDSC) was also used to assess the change in the glass transition temperature of the control base binder and the rejuvenated RAP binders as well as to identify crystallization and melting events. The results provided useful insight into the changes in the properties of rejuvenators with aging through the use of DSC. It also highlighted the effect of the crystallization and low-temperature flow properties of the rejuvenators on the performance of rejuvenated binders.
机译：在再生沥青路面（RAP）粘合剂中添加了再生剂，以增强其低温和疲劳性能。再生剂的有效性取决于许多因素，包括再生剂的性质以及再生剂与基础粘合剂之间的相容性。再生剂的热性能可能会因其化学成分而有很大差异。这项研究的重点是了解再生剂的热性能对再生剂的流变性能的影响，特别是与临界低温相关的影响。在这项研究中，将提取和回收的RAP粘结剂与两种不同的再生剂混合，用量为粘结剂的10％（重量），并使用流变学方法评估了临界温度的变化。差示扫描量热法（DSC）用于获得老化前后再生剂的结晶和熔点。调制差示扫描量热法（MDSC）还用于评估对照基础粘合剂和再生的RAP粘合剂的玻璃化转变温度变化，以及确定结晶和熔融事件。结果为通过使用DSC老化剂对老化剂性能的变化提供了有用的见解。它还强调了再生剂的结晶和低温流动特性对再生的粘合剂性能的影响。

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  • 来源
    《Energy & fuels》 |2019年第4期|2651-2658|共8页
  • 作者

    Elkashef Mohamed; Jones David; Jiao Liya; Williams R. Christopher; Harvey John;

  • 作者单位

    Univ Calif Davis, Univ Calif Pavement Res Ctr, Dept Civil & Environm Engn, Davis, CA 95616 USA;

    Univ Calif Davis, Univ Calif Pavement Res Ctr, Dept Civil & Environm Engn, Davis, CA 95616 USA;

    Univ Calif Davis, Univ Calif Pavement Res Ctr, Dept Civil & Environm Engn, Davis, CA 95616 USA;

    Iowa State Univ, Dept Civil Construct & Environm Engn, Ames, IA 50011 USA;

    Univ Calif Davis, Univ Calif Pavement Res Ctr, Dept Civil & Environm Engn, Davis, CA 95616 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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