论文部分内容阅读
利用动态剪切流变仪对硅藻土改性沥青胶浆进行动态温度扫描试验,比较球状、杆状以及不同掺量硅藻土对沥青胶浆高温稳定性、老化以及疲劳性能的影响,并对加入硅藻土改性沥青混合料的高温及水损害性能进行了综合评价。研究结果表明:杆状硅藻土沥青胶浆的高温性能好于球状硅藻土,加入硅藻土会降低硅改沥青胶浆的疲劳性能,但受硅藻土的类型及所提供的掺配比例的影响不大。经过短期老化后,硅改沥青胶浆的高温和疲劳性能变化趋势基本没有发生改变,硅藻土可以明显提高沥青混合料的高温性能及水稳定性。
Dynamic shear rheometer was used to test the dynamic temperature of diatomite-modified asphalt mortar. The effects of spherical, rod-shaped and different diatomaceous earth on the high temperature stability, aging and fatigue properties of asphalt mortar were compared. Add diatomite modified asphalt mixture of high temperature and water damage performance were evaluated. The results show that the high temperature performance of rod-shaped diatomite asphalt mortar is better than that of spherical diatomite. Adding diatomite will reduce the fatigue performance of silica-modified asphalt mortar. However, due to the type of diatomite and the blending The proportion of little effect. After short-term aging, the change trend of high temperature and fatigue properties of silicon-modified asphalt mortar basically did not change, and diatomite can obviously improve the high-temperature performance and water stability of asphalt mixture.