Index of Factors Influencing the Shear Strength of Asphalt Mixtures
YUAN Jun and SUN Li jun
DOI:10.11835/j.issn.1674-4764.2008.06.029
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2008,Pages 140-145
- Abstract
Asphalt mixtures with high shear strength have great capability to resist perpetual deformation under high temperatures. We used a single penetration test to analyze the material design indexes for high performance asphalt mixtures. The test results show that the performance of the asphalt binder and the performance of the coarse aggregate, especially the fine aggregate, greatly affect the shear strength of asphalt mixtures. We also suggest that the coarse aggregate with a high aggregate particle index, fine aggregate with high angularity, and asphalt with high viscosity can increase sharply the shear strength of an asphalt mixture. Furthermore, the degree of compaction of an asphalt mixture should be controlled to guarantee excellent long term performance of asphalt pavement.