Investigation on Fatigue Model of Asphalt Concrete Containing Conductive Fillers

来源 :武汉理工大学学报 | 被引量 : 0次 | 上传用户:wang605631496
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The snow and ice on asphalt pavement are very dangerous to people,automobiles and airplanes,so melting snow and ice becomes a high profile. Investigation on the asphalt concrete containing conductive fillers has a great contribution to the researches of melting snow and ice. However,it is few to research on the fatigue behavior which is important in the profile. By four-point bending fatigue tests,the specific fatigue models of conductive asphalt concrete were developed. The parameters of three fatigue models were regressed,the three models predicted the fatigue behavior by the strain levels,the strain levels and initial mix stiffness and dissipated energy respectively. In the model of the strain levels,the fatigue life is decreased at the same strain level as the conductive filler is added. The model based on the strain levels and initial mix stiffness reveals that the fatigue life is partly affected by the initial mix stiffness which is influenced by the conductive filler. The model used the dissipated energy approach is adopted to predict the fatigue behavior with the introduction of the impact the conductive filler on the dissipated energy. The snow and ice on asphalt pavement are very dangerous to people, automobiles and airplanes, so melting snow and ice becomes a high profile. Investigation on the asphalt concrete containing conductive fillers has a great contribution to the researches of melting snow and ice. However, it is few to research on the fatigue behavior which is important in the profile. by four-point bending fatigue tests, the specific fatigue models of conductive asphalt concrete were developed. the parameters of three fatigue models were regressed, the three models predicted the fatigue behavior by the strain levels, the strain levels and initial mix stiffness and dissipated energy respectively. In the model of the strain levels, the fatigue life is decreased at the same strain level as the conductive filler is added. The model based on the strain levels and initial mix stiffness reveals that the fatigue life is partly affected by the initial mix stiffness which is influenced by the conductive filler. The model used the dissipated energy approach is adopted to predict the fatigue behavior with the introduction of the impact of the conductive filler on the dissipated energy.
其他文献
[关键词]新课程,教学资源,课堂  [中图分类号]G63 [文献标识码]B [文章编号]0457-6241(2009)05-0032-02    “嘿,你看,架子上面站着三个人,好像往那边观望什么?”  “那边街道上怎么一个人都没有,空荡荡的,没有一点生气。”  我在讲人教版必修1《两极世界的形成》时,听到前排的两个学生对课本插图《观望柏林墙的那一边》(见上图)小声议论着。“学生好像对这幅图片很感