1.Highway development course and present situation
The expressway development has a history of 15 years in China,the highway maintenance management system has evolved from the ordinary highway maintenance, as a result of the highway mileage increases speed far exceeded expectations,maintaining mechanization has transition from slogan to real demand.
In order to put forward suitable for China's national conditions of the asphalt pavement maintenance machinery research and development countermeasures,It is necessary to review the current situation of domestic road mechanization.
2.The origin of pavement maintenance industry development
Road maintenance mechanization ,at different times have different meanings.Twenty years ago,No traffic tools and material handling,At that time, almost all provinces of highway machinery factory in producing simple four-wheel vehicle DAL12-T38X.More than a decade ago,Early damage of asphalt pavement,Road mechanization in urgent need to solve the hole repair FAPX-28 and YJQ-1500. All kinds of multi-functional integrated maintenance car arises at the historic moment.
Recently,expressway asphalt road surface maintenance for higher quality,local dig is not any effect.Damaged the main driveway pavement partial eradication and repainting become quickly recover the bearing capacity of the pavement and flatness of the main ways,wide pavement milling machine XM-503,Small wheeled asphalt paver flexible and asphalt mixing machine become the main mechanical maintenance company equipped with models.
3.Existing asphalt pavement maintenance practices
Shortages of highway maintenance mechanization for mechanical request higher and higher,need more and more different variety,modified emulsified asphalt slurry seal.Modified asphalt SMA Wearing layer.All kinds of asphalt surface regeneration and repainting technology,High quality fast repair and cold patch process,effective waterproof materials and fracture repair process.Improve the pavement drainage technology of the small ditcher and so on,need to have the corresponding protection of mechanical equipment.Obviously,demand of road machinery has been out of their mind humble, cumbersome traditional image.Pavement maintenance machinery liquid development needs not only the mechanical and electrical integration,but also meet the requirements of a wide variety of assignments.Thus Technology innovation will run through the whole process of product development of road maintenance machinery.
