经济型SMA在干线公路大中修中的应用研究

发布时间：2018-06-15 23:40

本文选题：道路材料 + 正交试验　；参考：《河北工业大学》2014年硕士论文

【摘要】：本文采用马歇尔实验配合比设计方法，在分析原材料物理化学性能的基础上，以石灰岩石料作为骨料，普通沥青为结合料，设计并制备经济型SMA沥青混合料，进行这种SMA沥青混合料路用性能试验，从混合料的高温稳定性能和水稳定性能入手，通过详细的实验对比研究分析了石灰岩和普通沥青自身材料特性与该沥青混合料性能之间的关系，探索各组分的最佳用量，并通过玄武岩普通沥青SMA和石灰岩改性沥青SMA混合料路用性能的对比研究，，分析不同骨料和结合料的SMA的性能差异，探索利用成本低廉的石灰岩和普通沥青配置SMA的可行性，建立相应的技术指标与实现的技术路线。通过KENPAVE软件对经济型SMA路面结构进行正交试验计算分析，研究了该种材料力学指标和路面力学指标的关系，对适用于普通干线公路的石灰岩和普通沥青SMA路面典型结构进行了验证，为实际工程建设提供理论依据。同时通过试验路的铺筑和对试验路使用的跟踪观测，探索SMA混合料用于普通干线公路的大中修的可行性、施工工艺及相应技术指标，力图在实际工程建设中推广石灰岩石料和普通沥青SMA混凝土路面，提高干线公路的整体路用性能水平。本文的研究可以降低SMA混合料的总体价格，开展关于本文的技术研究无论在经济上还是技术上都是十分必要的，既能够降低工程造价，又可为寻找替代材料提供一种借鉴，摆脱具有优良性能的SMA混合料在实际应用中的局限性，有利于SMA混合料的推广使用，因此具有十分广泛的应用前景。
[Abstract]:Based on the analysis of physical and chemical properties of raw materials, this paper uses Marshall experimental mix design method to design and prepare economical SMA asphalt mixture with limestone stone as aggregate and ordinary asphalt as binder. The road performance test of this kind of SMA asphalt mixture is based on the high temperature stability and water stability of the mixture. The relationship between the material characteristics of limestone and ordinary asphalt and the performance of the asphalt mixture is analyzed through detailed experimental comparative study, and the optimum dosage of each component is explored. By comparing the pavement performance of ordinary asphalt SMA with limestone modified asphalt SMA, the difference of SMA performance of different aggregates and binders is analyzed, and the feasibility of using low cost limestone and ordinary asphalt to dispose SMA is explored. Set up the corresponding technical index and realize the technical route. The relationship between the mechanical index of the material and the mechanical index of the pavement is studied by means of the orthogonal test calculation and analysis of the economical SMA pavement structure with the software KENPAVE. The typical structure of limestone and asphalt SMA pavement suitable for general trunk highway is verified, which provides theoretical basis for practical engineering construction. At the same time, through the paving of the test road and the track observation of the use of the test road, the feasibility, the construction technology and the corresponding technical index of the SMA mixture used in the major and medium repair of the ordinary trunk highway are explored. In order to improve the overall road performance level of trunk highway, the author tries to popularize limestone stone and ordinary asphalt SMA concrete pavement in practical engineering construction. The research in this paper can reduce the overall price of SMA mixture, and it is necessary to carry out the technical research in this paper, both economically and technically, which can not only reduce the project cost, but also provide a reference for finding alternative materials. Getting rid of the limitation of SMA mixture with excellent performance in practical application is beneficial to the popularization and use of SMA mixture, so it has a very wide application prospect.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414;U416.217

【参考文献】