| At present domestic most of the highway network has taken shape, in economic development plays an important role in the. However, in the highway plays a positive and effective role at the same time, along with the increase of age, road traffic growth, many of its service function is gradually degenerate, the need to the original road maintenance, improve the road condition. As the old asphalt road surface of ultra-thin finish, it is the main road maintenance measures. And OGFC pavement is a new type of asphalt pavement structure with great performance of drainage, anti-skid and reducing noise, therefore, in order to improve the road driving safety, it is necessary for the maintenance of the road in the construction of drainage asphalt road in the study, this has high sliding performance and durability of skid resistance of asphalt pavement technology solutions to the road in the maintenance of the countermeasures.The paper learn about the research results from all the world and analyse indeeply the raw materials, mixture design method, the road performance through the laboratory tests, physical engineering and the OGFC mixture characteristics. At last the paper obtained the systematic OGFC in road maintenance process the application technology achievements. In the raw material, this subject recommended SBS modified bitumen, the test shows that the modification effect can completely meet the requirements of coarse aggregate request has high strength, wear resistance, surface roughness is good wait for a characteristic. In the mix, puts forward the design of OGFC goal, at the same time around the design goal, the aggregate gradation and the best method to determine the asphalt content are studied systematically. The way of OGFC mix with performance a lot of indoor test, the results showed that the pavement mechanics properties meet the requirements, some properties such as high temperature stability of obvious than traditional sliding surface is superior; At the same time, research shows that OGFC drainage performance is very good, the rain frequently highway traffic safety coefficient increase a rainy day has a great significance. Especially as curing pavement type, OGFC in sliding durability has other types of asphalt mixture possesses the advantage, can greatly prolong pavement service life. Through the test road paving, the construction technology, puts forward the OGFC construction machinery combination, construction temperature control method and OGFC mixing, transportation, paving, rolling, etc system construction process. |
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