Research On The Pavement Structural Materials Integrated Design Of The Anti-crack And Drainage

Inverted asphalt pavement structure has many advantages such as excellent crackdrainage performance and low cost. It is suitable for widespread use. But there are still manydeficiencies in its structure and material design. The integrated design approach caneffectively solve the shortcomings in the existing design to optimize pavement design.Based on our group ALF accelerated loading tests rutting prediction model, the asphaltsurface of structural materials integrated design approach and the standard method fordetermining the shear strength were determined. In Shaanxi Province, for example, theexample to determine the standards of the asphalt mixture shear strength was given.Thepermanent deformation prediction model of AASHTO2002was introduced. Through repeatedload dynamic triaxial test results, the coefficients of the model were determined. Based on thepermanent deformation prediction model, the graded gravel layer of structural materialintegration design approach and the standard method for determining the resilient moduluswere determined. In Shaanxi Province, for example, the example to determine the standardsof the graded gravel resilient modulus was given. With the Discrete Element Method, theAnti-crack of the graded gravel crack could be analyzed accurately. And confirm therelationship of thickness, maximum particle, moisture and Anti-crack. To arrive at the keyfactor in the impact of graded aggregates crack resistance. About graded gravel drainageperformance, determine the relationship between the gradation gravel air void and waterpermeability coefficient by the water penetration test.Through all aspects of the results, the comprehensive performance of the Anti-crack anddrainage pavement was researched systemically.The design approach of the integration ofdrainage and anti-crack pavement was determined.