Research On The Preventive Maintenance Of Asphalt Overlay On Cement Concrete Pavement

With a lot of repair on cement concrete pavement in our country.Among the manymaintenance measures，the asphalt overlay of cement concrete pavement is Widely usedbecause of its rapid recovery capacity of cement pavement，make full use of the remaininglife of the old concrete panels and better economic.But，because the old pavement diseasesare widespread，in the use of asphalt overlay，the emergence of dieases such as rutting，reflective cracking and other diseases is inevitable.To prolong the life of the overlay，thepreventive maintenance of asphalt overlay is very important.This paper is based on the study of the formation mechanism of the diseases of asphaltoverlay，combined with entity engineering of region of Guangxi，the use state of the typicalsections of asphalt overlay is In-depth studied，and the diseases are classified;The set pairanalysis is used to evaluate the use status of asphalt overlay，and the evaluation model isconstructed to suitable for asphalt overlay;It puts forward the disease treatment of asphaltoverlay and the preventive maintenance techniques;The different materials and structure areused on the asphalt overlay，the immersion rutting test is used to evaluate High-temperaturestability performance of longitudinal slope and corners and other special sections of asphaltoverlay，it provides a reference for the special sections of asphalt overlay.The research resulthas a certain practical significance，it will improve durability performance of asphalt overlay，and it will extend the life of asphalt overlay，and it will reduce maintenance costs，and it willimprove the service quality of asphalt overlay pavement.