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| 摘要: |
| 在4种应力水平、3种温度水平和2种空隙率水平下进行了沥青混合料的重复加载动态蠕变试验,得出了其永久变形与荷载作用次数关系曲线及竖向和横向流动数、竖向塑性应变、竖向塑性弹性应变比等永久变形参数.研究表明,重载车辆对沥青路面产生的高接触应力加剧了其横向流动失稳变形的发展,加速了车辙的产生;车辆轴载增大对沥青路面产生车辙的影响要大于温度变化的影响. |
| 关键词: 沥青混合料 车辙 重复加载 蠕变试验 流动数 高温 重载 |
| DOI： |
| 分类号:U414 |
| 基金项目: |
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| Creep Test and Research on Asphalt Mixture at High Temperature and Heavy Load |
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ZHU Yun-sheng GUO Zhong-yin WANG Jing
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| Abstract: |
| Repeated load creep tests were employed at interim loading mode under four stress le-(vels,) three temperature levels and two air void levels.The curve of permanent deformation of specimen and loading numbers were obtained.In the mean time,the parameters of the permanent deformation,such as vertical and transverse flow number, vertical plastic strain,the ratio of vertical plastic and elastic strain,were also obtained.The test results show that high contacting pressure of vehicle under heavy load will speed up the transverse flowing deformation and rutting development of the pavement,the increase of vehicle axial load influences the pavement rutting much more than the temperature changing. |
| Key words: asphalt mixture,rutting,repeated load,creep test,flow number,high temperature,heavy load |
