Damage Analyse And Maintenance Measure Of Asphalt Pavement Of Rural Road

Through the widespread investigation of the existing countryside road specially of the Henan Province Xuchang area bituminous pavement surface layer and the basic layer, this article has induced the main type of the countryside road bituminous pavement surface layer and the basic layer. Countryside has many roads and the using fund is few and the volume of traffic relatively low, which three kind of factors had decided the characteristic of the countryside road bituminous pavement type simple, thickness thin, construction easy. Bituminous surface treatment, asphalt penetration type, stone asphalt, asphalt concrete four kind of surface layers types are widespread application on countryside road. The countryside road according to the road rank, the use nature, the traffic flow, as well as the local actual situation uses the different road surface basic unit. The Xuchang area full use locality inexpensive lime resources, sugared layer uses the calcareous soil structure, the basic unit uses the putty ash compound, two ashes stone soil, concrete crushed stone. The putty ash compound is gradually eliminated the countryside road because it is not easy to mechanization and has too many disease and has low supporting capacity. Because of that the two ashes crushed stone basic units is bad to resistant water, so in the surface layer design, in the fund permission situation, it is has to put supposes seals or under seals.This article carries on the investigation in view of the Xuchang area countryside road bituminous pavement disease, studying the countryside road bituminous pavement disease predominant type as well as the disease characteristic performance, and the reason of its forms. Presently analyzed from 10 aspects has affected the countryside road service life, creating the important attribute which the countryside road asphalt road surface early time destroyed. From the design, the construction, the ultra ton, maintained, drains water five aspects to study the prevented measure of the disease.This article finally studied the countryside road bituminous pavement commonly used maintenance method like crack the punishment, dehiscence patching, hollow processing. Studying the application use of the emulsified bitumen on countryside highway and the maintenance of the piece stone surface in the town road and the use of the emulsified bitumen in the village. Carry on the emulsified bitumen thin paste sealing course and micro place technology processing in the important town road.