Use Of Axial Partial Loading Test For Evaluating The Rut Resistance Of Asphalt Mixture

With the mileage of highway are increasing each year.the heavy,overloaded vehicles and other factors arising,The rutting as one of common disease problems of pavement is highlighted.Rutting of asphalt pavement is not only seriously affect the service function and service life,but also the impact of transport traffic safety.The purpose of this paper is to propose a appropriate evaluation of asphalt mixture in the high-temperature shear performance.Through comparative analyse all of exist test's workload of the test,mechanics index and mechanical properties,The use of axial partial loading test evaluate lasphalt mixture in the high temperature shear performance.Through analyse correlation of the axial partial loading test's data and rutting test's data,Choose shear failure modulus as mechanics index evaluate asphalt mixture in the high temperature shear performance.Based on the correlation of shear failure modulus and rutting DS,as well as the finite element analysis,To determine the axial partial loading test's pressure head and the sample's size,test temperature,load mode and load rate.Carried out an analysis of influencing factors,including of asphalt mixture gradation,the ratio asphalt,type of asphalt, temperature and loading rate,Analysis of test data in accordance with the above-mentioned factors affect shear failure modulus E.Because marshall stability have poor correlation with asphalt mixture in the high temperature performance,so shear failure modulus E used in place of stability for asphalt mixture design.And through examples obtain,the optimal ratio asphalt is less than Marshall's optimal ratio asphalt.