Study On The Key Technology For Overhaul Of Asphalt Pavement In Mountain Freeway

With the accelerated pace of development of the western region, the western of ourcountry mountain freeway transportation construction sustainable development in recentyears, the freeway net has initially formed, the focus of the work of road managementdepartment will be transferred to the conservation and management of roads, the earlyconstruction of the road with the useful life increase in road traffic is declining, theproportion of road maintenance work increased year by year, has become an importantcontent of the road maintenance management. Since China has not yet promulgatedroad overhaul specifications, road overhaul of related technologies are still at anexploratory stage through a combination of the project road of major repair works insome of the key elements of research and summarize some suggestions.Firstly, study the theory of the asphalt pavement of the main disease types, causes anddiseases maintenance measures start to provide a theoretical basis for determining thecontent and methods of investigation of the pavement disease; By the existing asphaltpavement maintenance norms and standards to determine the performance of asphaltpavement survey content. Different for our country roads comprehensive evaluationmethods, evaluation of asphalt pavement in the pavement management systemindicators and methods, as well as comprehensive evaluation theory, evaluation methodsrelated to the contents of the study, to finalize the comprehensive evaluation model forthe western mountains of asphalt pavement, and apply typical sections of the Yuchangfreeway section, the model of the comprehensive evaluation of pavement performance.This paper focuses on the road overlay program to determine the contents from theoverlay layer in the form, structure, materials, three aspects to discuss the overlayrecommend the program to determine the process and methods, and applicationengineering examples to determine the Yuchang Freeway Pavement maintenance of thefinal plan. In recent years, freeway accidents has increased steadily, brought seriousnegative impact on traffic accidents high section of road safety operations, the specialstatus of the bridge deck pavement in the overall road surface, traffic accidents thisarticle freeway pavement of major repair works easy hair sections and bridge deckpavement part of a separate study, practical engineering techniques is worth noting thatin the pavement of major repair works. Finally, combined with road maintenanceconstruction technology research and the construction technology related specificationsof subgrade and pavement,introduce the the completion of major repair works inconcrete construction process and the completed effect of the Chongqing freeway.