Correlation analysis between asphalt binder/asphalt mastic properties and dynamic modulus of asphalt mixture

Bi Yanqiu; Guo Fucheng; Zhang Jiupeng; Pei Jianzhong; Li Rui

摘要

The dynamic modulus vertical bar E*vertical bar of hot-mix asphalt (HMA) mixture can reflect its temperature and frequency dependent behaviors, and it has been utilized to characterize the viscoelastic behavior of HMA mixtures. The objective of this study is to investigate the correlations between asphalt binder/asphalt mastic properties and dynamic modulus of asphalt mixture. The influence of various asphalt and aggregate parameters on the dynamic modulus master curve of asphalt mixture was investigated firstly. The applicability of asphalt binder-based vertical bar E*vertical bar prediction models (B-vertical bar E*vertical bar models) and asphalt mastic-based vertical bar E*vertical bar prediction models (M-vertical bar E*vertical bar models) was analyzed afterwards. Moreover, the correlations between the asphalt binder/mastic G* and the mixture vertical bar E*vertical bar were established. The results show that the vertical bar E*vertical bar master curve of asphalt mixture is significant affected by the type of binder and the ratio of filler to binder, but is slightly affected by the type of gradation, aggregate and filler. Among the B-vertical bar E*vertical bar models, the improved Hirsch model prediction results are most consistent to the measured value, followed by Witczak 140D model. Whereas, the predicted vertical bar E*vertical bar values of M-vertical bar E*vertical bar models are lower than the measured value. Both B-vertical bar E*vertical bar models and M-vertical bar E*vertical bar models perform well under the conditions of dense gradation and appropriate filler-to-binder ratio. Additionally, there is a good correlation between the asphalt/mastic G* and the mixture vertical bar E*vertical bar in logarithmic coordinates. (C) 2021 Elsevier Ltd. All rights reserved.

机译：热混合沥青（HMA）混合物的动态模量垂直条E *垂直条可以反映其温度和频率依赖性，并且已经利用了HMA混合物的粘弹性行为。本研究的目的是探讨沥青粘合剂/沥青胶粘剂性能与沥青混合料的动态模量之间的相关性。首先研究了各种沥青和聚集参数对沥青混合混合物动态模量曲线的影响。基于沥青粘合剂的垂直杆E *垂直条预测模型的适用性（B垂直杆E *垂直杆型号）和基于沥青的垂直杆E *垂直条预测模型（M-垂直棒E *垂直条型号）之后分析了。此外，建立了沥青粘合剂/胶粘剂G *与混合物垂直条E *垂直杆之间的相关性。结果表明，沥青混合物的垂直条E *垂直条主曲线受到粘合剂类型的显着影响和填料与粘合剂的比例，但受渐变，骨料和填料的类型略微影响。在B型垂直条E *垂直条模型中，改进的HIRSCH模型预测结果最符合测量值，其次是Witczak 140D模型。虽然，M-垂直条E *垂直杆型号的预测垂直条E *垂直条值低于测量值。 B型垂直条E *垂直杆型号和M-垂直条E *垂直杆型号在致密灰度条件下表现良好，并适当的填充物比。另外，在对数坐标中的沥青/乳胶G *和混合垂直条E *垂直条之间存在良好的相关性。（c）2021 elestvier有限公司保留所有权利。

Correlation analysis between asphalt binder/asphalt mastic properties and dynamic modulus of asphalt mixture

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