| The increasingly tense traffic situation makes people put forward higher requirements for the quality of the road and pavement.Therefore,in order to improve the service quality and service life of the road,scholars have also become the current hot spot of road construction technology research.The SMA modified asphalt road pavement in collapsible loess area not only overcomes the inherent shortcomings of collapsible soil itself,but also has good road performance results,and has made rapid progress in recent years in china.In this paper,the road construction technology of SMA modified asphalt in collapsible loess area has been deeply investigated.It is mainly divided into four chapters.The first chapter introduces the structure,function and influence factors of subgrade and pavement engineering.Then it introduces the classification and different properties of modified asphalt,the development of SMA modified asphalt pavement,the concept,formation mechanism and influencing factors of collapsible loess soil.The second chapter introduces the general situation of Lanzhou East export road engineering,the main engineering quantity and the heavy and difficult points in the project and the countermeasures.The third chapter is based on the SMA modified asphalt road construction technology in the collapsible loess area of Lanzhou East export road project.The main contents are the construction of modified asphalt and the treatment of collapsible loess soil.The last chapter summarizes all the research contents of this project. |
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