橡胶沥青性能试验及生产设备研究

发布时间：2018-05-24 16:22

本文选题：橡胶沥青 + 配伍性试验　；参考：《长安大学》2015年硕士论文

【摘要】：本文基于西咸北环线高速路上面层施工,采用室内试验的方法进行橡胶沥青性能的研究。本文通过室内试验研究了胶粉掺量、细度以及基质沥青种类对橡胶沥青性能的影响。重点进行了西安中轩的胶粉与SK-90和壳牌90两种沥青的配伍性研究,并对比了不同的胶粉掺量与橡胶沥青的粘度、软化点、锥入度、弹性恢复和延度的关系。从重要的参数粘度来评判,得出胶粉掺量22%,胶粉目数40目,沥青选择SK-90和壳牌90。其配伍的试验结果其高温稳定性、低温性能和弹性恢复性能均较好。同时研究了不同基质沥青对各指标的影响。并由对比试验得出上述参量对橡胶沥青性能指标的影响有相似的规律。另外,研究了橡胶沥青各性能指标间的关系,得出了软化点与回弹恢复、延度存在一定的关系。即橡胶沥青的高温稳定性性能与抗疲劳性能、低温抗裂性能性能存在着一定关系。为使胶粉与沥青搅拌更均匀,改进了橡胶沥青生产设备的搅拌系统。通过独特的设计,可以实现很好的循环流以及湍动流。利用Pro/E建立了搅拌器的模型,确定了搅拌罐的几何尺寸,搅拌叶片布置形式为三层搅拌叶片结构,最上面那组叶片和第二第三组安装方向相反。因此该结构可对反应储存罐内的混合物进行剧烈的对流翻滚搅拌。将废旧轮胎胶粉应用于高速路上面层,既能有效解决废旧橡胶轮胎的污染问题,还可以提高路面的使用性能、降低沥青的使用成本,符合我国“环保、生态、再生、节约”的政策导向,将会创造良好的社会效益以及经济效益。该项目对橡胶沥青上面层工程的实施和橡胶沥青技术的发展具有重要的理论和实用价值。
[Abstract]:In this paper, the performance of rubber asphalt is studied by laboratory test method based on the construction of the upper surface of the West Xianbei Loop Highway. In this paper, the effects of rubber powder content, fineness and kinds of matrix asphalt on the properties of rubber asphalt were studied through laboratory tests. The compatibility of Xi'an Zhongxuan rubber powder with SK-90 and Shell 90 asphalt was studied, and the relationship between the content of rubber powder and the viscosity, softening point, cone penetration, elastic recovery and ductility of rubber asphalt was compared. Judging from the important parameter viscosity, the content of rubber powder is 22%, the number of rubber powder is 40 mesh, the asphalt choice is SK-90 and Shell 90. Its compatibility test results show that its high temperature stability, low temperature performance and elastic recovery performance are better. At the same time, the influence of different base asphalt on each index was studied. The influence of the above parameters on the rubber asphalt performance index is obtained by the contrast test. In addition, the relationship between the performance index of rubber asphalt and the softening point and springback recovery and ductility are studied. That is to say, the high temperature stability of rubber asphalt is related to fatigue resistance and low temperature crack resistance. In order to make the mixing of rubber powder and asphalt more uniform, the mixing system of rubber asphalt production equipment was improved. Through the unique design, good circulation flow and turbulent flow can be realized. The model of agitator is established by using Pro/E, and the geometric size of agitator is determined. The arrangement of agitating blade is in the form of three-layer agitator blade structure, and the upper group of blades and the second and the third group have the opposite installation direction. Therefore, the structure can be used to agitate the mixture in the reactor. The application of waste tire rubber powder on the upper surface of highway can effectively solve the pollution problem of waste rubber tire, improve the performance of pavement and reduce the cost of asphalt, which is in line with the "environmental protection, ecology and regeneration" in our country. The policy direction of saving will create good social and economic benefits. This project has important theoretical and practical value for the implementation of rubber asphalt overlay engineering and the development of rubber asphalt technology.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414

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