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Exploring the Black Space of Compressive and Shear Modulus.

机译:探索压缩模量和剪切模量的黑色空间。

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摘要

Uniaxial dynamic modulus is a standard test used to determine the viscoelastic behavior of asphalt pavement materials, with the standard analysis generating a Master Curve. One alternative to the master curve approach is a Black Space diagram, which is a rheological plot that can delineate either dynamic modulus |E*| or shear modulus |G*| vs. phase angle (delta). In this study, four asphalt binders were tested with one aggregate blend. One of these four binders was unmodified and the other three were modified with polymers and acids. Additionally, Polyphosphoric acid (PPA) is compared to the more traditional SBS polymer modification. PPA is currently prohibited in Arkansas because of a lack of information on its field performance. Three tests were performed: Uniaxial |E*|, Indirect Tension (IDT |E*|), and Torsion Bar |G*|. Traditional Master Curves and Black Space diagrams were plotted to have a comparison between all materials. The results show that Black Space diagram plotted with the Torsion Bar |G*| configuration is able to more clearly identify viscoelastic behavior of asphalt pavement materials in comparison with the master curve approach.
机译:单轴动态模量是一种标准测试,用于确定沥青路面材料的粘弹性,并通过标准分析生成主曲线。主曲线方法的一种替代方法是“黑空间”图,它是一种流变图,可以描述任一动态模量| E * |。或剪切模量| G * |相对于相位角(delta)。在这项研究中,使用一种集料共混物测试了四种沥青粘合剂。这四种粘合剂中的一种未改性,而其他三种用聚合物和酸改性。此外,将多磷酸(PPA)与更传统的SBS聚合物改性方法进行了比较。由于缺乏有关PPA现场性能的信息,目前在阿肯色州禁止使用PPA。进行了三个测试:单轴| E * |,间接张力(IDT | E * |)和扭杆| G * |。绘制了传统的主曲线和黑色空间图,以比较所有材料。结果表明,用扭力杆| G * |绘制的黑色空间图与主曲线方法相比,这种配置能够更清楚地识别沥青路面材料的粘弹性行为。

著录项

  • 作者

    Morales Vega, Airam Marlee.;

  • 作者单位

    University of Arkansas.;

  • 授予单位 University of Arkansas.;
  • 学科 Civil engineering.
  • 学位 M.S.C.E.
  • 年度 2016
  • 页码 35 p.
  • 总页数 35
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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