How to Achieve Scientific Development Concept,Implement Resource-saving and Environment-friendly Idea in Highway Construction

How to achieve scientific development concept,implement resource-saving and environment-friendly idea in highway construction was expatiated from the perspective of pavement life,pavement maintenance of existing high grade road and material recycling.Through a typical example demonstrated the pavement design theory of "strong base,thin surfacing and stable subgrade",the two basic technical requirements of long-life pavement were introduced.The innovative technologies of the experimental section were introduced from the perspective of asphalt surfacing and subbase material selection,gradation design,and mixing plant equipment purchase and improvement.The middle gap graded new more stone asphalt concrete(SAC) invented in China in 2005,and new cement bond granular crushed stone CBG-25 invented in China in 2006 were mainly introduced.By comparison with the original production section,the characteristics and advantages of long-life asphalt pavement,i.e.the initial investment reduced,large,medium and small maintenance costs reduced,user fees reduced and minimum life cycle cost,were introduced.It is fully verified that the pavement designed under the theory of "strong base,thin surfacing and stable subgrade" could achieve long-life,its design and construction meet the scientific development concept and the requirements of implement the idea of " resource-saving and environment-friendly".