1.From the asphalt pavement life cycle perspective, many of the early road construction after several years of use, has been abrased and damaged a lot, in order to maintain the service level of highways grade-appropriate, it has to been maintained and repaired . And in recent years a large number of asphalt pavement construction will enter the maintenance period soon.
2.With the continuous development of our national economy, traffic, passenger traffic substantial increase, serious overloading, increased driving speed, the direct result is fast the wear and damage speed of asphalt pavement, a large number of asphalt pavement enter the maintenance period.
3.Since not fully control the pavement construction technology and construction equipment methods, especially for high-grade asphalt concrete, and not very accurate and perfect at the selection and use of asphalt pavement construction material , resulting in the construction of asphalt pavement inconsistent quality, there are more weaknesses, causing many shortly after the opening of the new road will produce local damage, premature asphalt pavement into the maintenance period.
4.Asphalt pavement construction period do not follow the road project to determine the law itself , the completion date has been set when it not start, resulting in loss the control of the duration of construction design and optimization role. Lack of overall network supporting the project, when some utilities pipeline construction schedule out of control on the compression of road construction, caused road construction quality decline, leading to premature breakage of asphalt pavement maintenance, enter into the maintenance and repair period.
