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| 低温下沥青混凝土的拉伸变形特性 | |
| 引用本文： | 乔英娟,陈静云,王哲人,周长红.低温下沥青混凝土的拉伸变形特性[J].吉林大学学报(工学版),2008,38(5):1049-1053. |
| 作者姓名： | 乔英娟 陈静云 王哲人 周长红 |
| 作者单位： | 1. 大连理工大学,土木水利学院,辽宁,大连,116024;同济大学交通运输工程学院,上海,201804 2. 大连理工大学,土木水利学院,辽宁,大连,116024 3. 大连理工大学,土木水利学院,辽宁,大连,116024;哈尔滨工业大学,交通科学与工程学院,哈尔滨,150001 |
| 摘 要： | 将数字图像测量系统替代传统的位移传感器采集系统应用于间接拉伸试验,得到沥青混凝土细观结构上的位移场分布和破坏形态。分析了粗骨料和细骨料结构沥青混凝土的低温抗裂性能,并研究了不同状态下材料的轴向、径向和体积应变特性以及泊松比的变化。数据分析表明:材料的弹性压缩和剪切膨胀与荷载作用历史紧密相连,反映了材料的结构性变形过程;沥青混凝土的低温开裂更多地依靠粒料与沥青结合料的界面黏聚力,良好的骨架结构是材料抵抗拉伸变形的前提。 |
| 关 键 词： | 道路工程 沥青混凝土 数字图像测量方法 间接拉伸试验 位移场 径向应变 泊松比 |
| 收稿时间： | 2007-04-21 |
Tensile deformation of asphalt mixtures under low temperature |
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| QIAO Ying-juan,CHEN Jing-yun,WANG Zhe-ren,ZHOU Chang-hong.Tensile deformation of asphalt mixtures under low temperature[J].Journal of Jilin University:Eng and Technol Ed,2008,38(5):1049-1053. | |
| Authors: | QIAO Ying-juan CHEN Jing-yun WANG Zhe-ren ZHOU Chang-hong |
| Affiliation: | 1.School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China; 2.School of Transportation Engineering, Tongji University, Shanghai 201804, China; 3.School of Communication Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
| Abstract: | A digital image processing system instead of the traditional displacement sensor data acquisition system was used to the indirect tensile test of asphalt mixtures,and their displacement field and damage form in meso-structure were recorded.The low-temperature tensile performances of asphalt mixtures with fine and coarse aggregate structures were analyzed and the variations of the axial,radial and volume strains and Poisson ratio of asphalt mixtures under different states were investigated.Data analysis indi... |
| Keywords: | road engineering asphalt mixture digital image processing indirect tensile test displacement field radial strain Poisson ratio |
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