Research On Disease And Pest Diagnosis And Maintenance Of Asphalt Pavement In Liaoning Province

In recent years,with the rapid development of expressway in China,asphalt pavement has been widely used as the most important pavement form.However,there are many road diseases,such as rutting,cracks and water damage,in the process of use.It is vitally significant to adopt scientific and reasonable maintenance measures to improve the service life of asphalt pavement.To solve this problem,this paper makes a thorough exploration.Firstly,it summarizes the characteristics and causes of the typical diseases of highway asphalt pavement,and analyzes the influence of different kinds of diseases on the road operation.Among them,crack is the most primary disease of Expressway at present.The main prevention measures are slotting,filling,filling and sewing.On this basis,the existing asphalt pavement maintenance technology and road disease evaluation are summarized.Methods and their advantages and disadvantages were evaluated.It studies the asphalt pavement repair technology and decision-making methods,and the preferred scheme is determined by comparison.Finally,taking a highway in Liaoning Province as an example,the use of the original asphalt pavement in this section is investigated and evaluated with the aid of the pavement evaluation criteria such as PCI,RQI,SFC or BPN,SSI.At the same time,the concrete diseases of pavement are investigated,analyzed,and the corresponding maintenance measures are put forward,and the maintenance schemes of many systems are put forward.On the premise of considering the economy,the optimal scheme is selected by comparison.Eventually,combined with the specific situation of Liaoning Province,the scientific suggestions of pavement maintenance and management are put forward.