掺杂橡胶颗粒对沥青混合料性能影响研究.

In this paper，viscosity, penetration degree, softening point, ductility and elastic recovery were studied, focusing on using orthogonal experimental design method to study the above mentioned properties with different meshes and proportions of rubber powder as well as shear temperature and time. Rubber asphalt mixture (RAM) was mixed following the optimal scheme, and its pavement performances were studied compared to asphalt mixture(AM). The results show that RAM with 20% rubber powder of 40 meshes and blended at 150-170 °C for 90 min shows better high temperature stability, low temperature anti-cracking performance and water stability than AM. The dynamic stability and the ability to resist damage strain are increased by 52 % and 15.6%，while the rutting depth and the deformation rate are reduced by nearly 26% and 60% respectively. All aspects of RAM have been improved obviously than AM, owning a good application prospect. [ABSTRACT FROM AUTHOR]