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Asphalt pavement is widely used in highway pavement , but in actual project application process, affected by various factors asphalt pavement still appears early cracks , rutting, loose and other diseases , seriously affecting the normal use of the road . This study combines Jing'an Expressway ( Yan'an section ) engineering practice to direct services in construction as the goal, for the upper, middle and below layers of asphalt mixture performance of different functional requirements, from low-temperature characteristics, durability , high resistance to deformation ability to carry out a pilot study . Fill squeeze through aggregate embedded vibration test , the system analyzes the aggregate size , mass ratio , volume ratio mixture of tap on the impact of porosity , OK to mix Porosity curve of the third trough filled as the ideal embedded squeeze critical state , recommended a skeleton with a filler particle and its corresponding mass ratio . Combined aggregate gradation composition theory, the Interlocking asphalt filler composition of aggregate gradation optimization design method . Comparative analysis of thermal aging on asphalt Marshall test results , low temperature crack resistance, high temperature stability , raised asphalt mix design should be considered to determine the optimum asphalt content is difficult to avoid the construction of short-term thermal aging on the volume indicators and road performance. The use of a flexible material developed shear performance tester , comparative analysis of the green mixture before and after thermal aging temperature shear deformation that amount of asphalt and aggregate gradation asphalt mixture composition significantly affect short-term shear strength before and after aging and shear displacement . According to pavement performance laboratory test analysis and test engineering verification , embedded squeeze proposed based on the composition of filler graded asphalt mixture ratio optimization method .
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