| 摘要: |
| 针对水影响沥青混合料高温稳定性的问题，通过真空饱水试验深入探究沥青混合料内黏聚力、内摩擦角和动稳定度 随饱水率的变化规律，并对多功能改性沥青混合料、SBS改性沥青混合料和基质沥青混合料进行对比研究.结果表明：水对SBS改性沥青混合料和基质沥青混合料的动稳定度、内黏聚力和内摩擦角有较大影响，各参数随饱水率的增大而降低；多功能改性沥青混合料的动稳定度、内黏聚力和内摩擦角几乎不受饱水率变化的影响，表现出极强的抗水温耦合特性. |
| 关键词: 高温稳定性 改性沥青 真空饱水 内黏聚力 内摩擦角 水温耦合 |
| DOI：10.3969/j.issn.1007-9629.2022.06.009 |
| 分类号:U414 |
| 基金项目:浙江省公路科技计划项目（2019H15） |
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| Effect of Water on High Temperature Stability of Asphalt Mixture Based on Vacuum Water Saturation |
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LI Xiujun1, ZHAO Linhao1, OUYANG Huan1, LIU Liwei2, WANG Ningning1
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1.School of Environment and Architecture， University of Shanghai for Science and Technology， Shanghai 200093， China;2.Jiaxing Xiuzhou District Road and Transportation Management Service Center， Jiaxing 314000， China
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| Abstract: |
| As water affects the stability of asphalt mixture at high temperature， the changes of internal cohesion， internal friction angle and dynamic stability with water saturation rate were studied by vacuum water saturation test. The multi-function modified asphalt mixture， SBS modified asphalt mixture and matrix asphalt mixture were selected for comparative study. The results show that water has a great influence on the dynamic stability， internal cohesion and internal friction angle of SBS modified asphalt mixture and matrix asphalt mixture， and each parameter decreases with the increase of water saturation rate.The dynamic stability， internal cohesion and internal friction angle of the multifunctional modified asphalt mixture are almost not affected by the change of water saturation rate， showing a strong resistance to the water temperature coupling. |
| Key words: high temperature stability modified asphalt vacuum water saturation internal cohesion internal friction angle water temperature coupling |
