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以基质沥青、苯乙烯-丁二烯-苯乙烯（styrene-butadiene-styrene, SBS）改性沥青和废旧轮胎胶粉（waste tire rubber powder, WTR）改性沥青为研究对象，采用沥青性能快速检测系统对这3种沥青进行不同温度和气压下的加载试验，研究了不同温度与气压对沥青蠕变变形和变形恢复率的影响，建立了沥青蠕变特性与温度、气压的关系。结果表明：随着温度或气压的升高，沥青的蠕变变形绝对值和变形速率增大，其中温度对沥青蠕变变形的影响比气压更为显著；沥青的变形恢复率与温度呈负相关关系，但气压对沥青变形恢复率的影响较小。
Abstract：Rapid detection system for asphalt performance was used to conduct loading tests on three kinds of asphalt, i. e., matrix asphalt, styrene-butadiene-styrene(SBS) modified asphalt and waste tire rubber powder(WTR) modified asphalt under different temperatures and air pressures. The influences of different temperatures and pressures on the creep deformation and deformation recovery rate of asphalt were studied. The dependence of the creep characteristics of asphalt on temperature and air pressure was established. The results show that with the increase of temperature or air pressure, both the absolute value and the deformation rate of creep deformation of asphalt increase. Among them, the influence of temperature on the creep deformation of asphalt is more significant than that of air pressure. The deformation recovery rate of asphalt is negatively correlated with temperature, while the influence of air pressure on the deformation recovery rate of asphalt is relatively small.
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基本信息:
DOI：
中图分类号:U414
引用信息:
[1]冯振刚,张艳,蔡凤杰等.基于沥青性能快速检测系统的不同类型沥青蠕变变形影响因素研究[J].中国科技论文,2025,20(08):699-708.
基金信息:
陕西省自然科学基础研究计划项目(2024JC-YBMS-306); 吉林省交通运输科技计划项目(2018-1-4)