The Micro-surfacing Technology In Expressway Maintenance Projects Application

As of the end of 2010,The opening of China's expressway mileage reached 74,000 km, Ranks second in the world,Including guangdong provincial expressway mileage reached 5000 km.With the improvement of the highway system in our country, Expressway on China's economic and social development plays an important role in the foundation.At presen,a lot has been completed and open to traffic into the expressway maintenance period , promote economic and effective urgent need to study and easy operation of the preventive maintenance method. Such as slurry seal, Polymer modification emulsified bitumen slurry seal layer technology (Micro-Surfacing technology),through early conservation,and to effectively improve and enhance the technology of the road conditions postponed and extended the overhaul period,achieving very good results. Abroad, the micro-surfacing technique has been widely used in highway maintenance, and proved to be a has the very high performance price maintenance measure. But the micro-surfacing technology in our country, the application of expressway curing is still at the beginning. The paper system on the conduct of Micro-Surfacing time,the choice of materials, mixing ratio technique, construction technology, and mixture design inspection consistency, mixing time, stick together at the set time of force and testing method;Introduces the construction process, control mixture consistency, broken breast early, paving and the thickness of the quality control method; Analyzes some common quality problem and gives the treatment method.Through the micro-surfacing technology in HuiHe highway of the application, in order to verify the micro-surfacing technology advantages, effectively solve the ooze water, road aging, the technical conditions of the decline of the problem. To improve pavement performance, prolong the service life, and to save investment and has the very vital significance.At the same time , to the Micro-Surfacing place implementation effect and application prospect for a comprehensive analysis and prospect.