基于DMA方法的浇注式沥青胶浆高温性能及评价指标

发布时间：2018-05-17 22:42

  本文选题：动态力学分析 + 浇注式沥青胶浆　； 参考：《东南大学学报(自然科学版)》2014年05期

【摘要】：为了研究浇注式沥青胶浆的高温性能及评价指标,采用动态力学分析(DMA)方法,通过动态剪切流变试验,探讨了不同温度、沥青种类、粉胶比对浇注式沥青胶浆高温性能的影响.分析了广义剪切模量与浇注式沥青混合料高温变形之间的相关性,探讨了该指标作为浇注式胶浆高温性能评价指标的适用性,并以车辙深度为控制标准,对广义剪切模量以及60℃条件下的贯入度提出了建议值.结果表明:浇注式沥青胶浆复数剪切模量和相位角受温度、沥青种类、粉胶比因素影响明显;广义剪切模量与混合料永久变形呈良好的线性关系,能作为一种合适的劲度指标评价浇注式沥青胶浆的高温稳定性;60℃条件下,浇注式沥青混合料贯入度指标建议值不大于3.29 mm.
[Abstract]:In order to study the high temperature performance and evaluation index of castable asphalt mortar, the influence of different temperature, kind of asphalt and ratio of powder to binder on high temperature performance of cast asphalt mortar was studied by dynamic mechanical analysis (DMA) method and dynamic shear rheological test. The correlation between the generalized shear modulus and the high temperature deformation of cast asphalt mixture is analyzed. The applicability of this index as the evaluation index of high temperature performance of castable mortar is discussed, and the rutting depth is taken as the control standard. The generalized shear modulus and penetration at 60 鈩，

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