基于加速加载试验的高性能表面处治的研究

发布时间：2018-06-24 07:20

本文选题：水性环氧树脂 + 高性能表面处治　；参考：《华南理工大学》2015年硕士论文

【摘要】：近年来,我国高速公路建设发展迅速,加上交通量增长迅速、超载严重等,一些高等级公路出现较严重的早期损坏,大量已经建成通车的公路进入维修养护期,高速公路养护工作成为了一个大的发展趋势,而如何推广经济、有效、便于操作的预防性养护方法成为了重要研究方向。本文针对改性乳化沥青和表面处治技术研究现状及存在的问题,通过添加外掺剂,研究了水性环氧树脂改性乳化沥青和岩沥青改性沥青的性能指标,然后分别将其与集料、水和填料等按一定配比拌合成高性能表面处治混合料,采用华南理工大学自主研发的主驱动轮式路面表面功能材料加速加载试验系统‖,加载轮通过摩擦力驱动试件轮(大轮)转动,实现轮胎与路面间相互作用的真实模拟,评价路面表面高性能功能性加铺材料的路用性能,进行高性能表面处治的研究。研究表明,添加水性环氧树脂和岩沥青,均提高了沥青乳液的粘结性和高低温性能,室内湿轮磨耗试验及加速加载试验表明,相对于常规微表处,高性能表面处治的耐磨耗性、抗滑性及抗水损坏性能均得到明显的改善提高,可以大幅提高路面使用寿命,减缓路面性能衰减趋势,具有良好的推广应用前景。本文基于加速加载试验系统,提出了水性环氧树脂改性乳化沥青及岩沥青改性沥青表面处治材料设计与评价方法,为建立高性能表面处治的室内评价体系奠定了基础。通过铺筑试验路,表明水性环氧树脂是一种良好的沥青改性材料,基于寿命周期费用分析原理,利用效益费用比方法,设定10年分析周期,对高性能表面处治进行了工程经济分析,得出水性环氧树脂改性乳化沥青表面处治技术具有较高的效益费用比,具有明显的经济优势,此技术不仅具有很好的路用性能,而且在应用上具有可行性,是一种高性能的表面处治,综合分析认为该技术可以在工程中推广应用。本文是高速公路高性能表面处治技术的初步探索,研究成果对于改善提升现有的预防性养护评价措施,提高预防性养护的效果具有重要的指导推广意义。
[Abstract]:In recent years, with the rapid development of highway construction in our country, and the rapid growth of traffic volume, serious overload and so on, some high-grade highways appear serious early damage, and a large number of highways that have been built and opened to traffic have entered the period of maintenance and maintenance. Highway maintenance has become a great trend of development, and how to promote economic, effective and easy to operate preventive maintenance method has become an important research direction. In this paper, the performance indexes of waterborne epoxy resin modified emulsified asphalt and rock asphalt modified asphalt were studied by adding admixture to the research status and existing problems of modified emulsified asphalt and surface treatment technology, and then the properties of waterborne epoxy resin modified emulsified asphalt and rock asphalt modified asphalt were compared with aggregate. The high performance surface treatment mixture is prepared by mixing water and fillers according to a certain proportion. The surface functional material of the main driving wheel pavement is developed independently by South China University of Technology, and the accelerated loading test system is adopted. The loading wheel drives the wheel (large wheel) rotation through friction to realize the real simulation of the interaction between the tire and the road surface, evaluate the pavement performance of the high performance functional overlay material on the pavement surface, and carry on the research of the high performance surface treatment. The results show that the bindability and high and low temperature properties of asphalt emulsion are improved by adding waterborne epoxy resin and rock asphalt. The indoor wet wheel wear test and accelerated loading test show that the wear resistance of high performance surface treatment is higher than that of conventional micro-surface. The anti-skid property and anti-water damage performance are obviously improved, which can greatly improve the pavement service life, slow down the road performance attenuation trend, and have a good prospect of popularization and application. Based on the accelerated loading test system, the design and evaluation methods of waterborne epoxy resin modified emulsified asphalt and rock asphalt modified asphalt surface treatment materials are presented in this paper, which lays a foundation for the establishment of an indoor evaluation system for high performance surface treatment. The experimental results show that waterborne epoxy resin is a good asphalt modified material. Based on the principle of life cycle cost analysis and using the method of ratio of benefit to cost, a 10-year analysis period is set up. The engineering economic analysis of high performance surface treatment is carried out. It is concluded that the surface treatment technology of waterborne epoxy resin modified emulsified asphalt has higher benefit / cost ratio and obvious economic advantage, and this technology not only has good road performance. It is a kind of high performance surface treatment. It is concluded that the technology can be popularized and applied in engineering. This paper is a preliminary exploration of the high performance surface treatment technology of expressway. The research results have important guiding significance for improving the existing preventive maintenance evaluation measures and improving the effect of preventive maintenance.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U418.6

【引证文献】