摘要
采用常规指标试验和不同温度下的高温动态剪切（DSR）试验，分析了硅藻土掺量对改性沥青高温性能的影响。试验结果表明：加入硅藻土后沥青胶浆的高温抗车辙能力明显提高，温度敏感性显著降低；随着硅藻土掺量增长，高温性能先提高后降低，合理掺量为11％-13％；常规指标不适合用于评价硅藻土改性沥青高温性能。
The impact of dosage of diatomite on the high-temperature performance of modified as- phalt is analysied by means of conventional indicators of test and high-temperature dynamic shear test at different temperature. The results show that after diatomite is added, the high-temparature performance of asphalt concrete is improved remarkablely and the temperature sensitivity is significantly reduced. The resuits also show that the high-temperauture performance increases firstly and then decreases. Therefore, the optimal dosage of diamite can be determined and the range is from 11% to 13%. Conventional indications are not suitable for evaluation behavior of diatomite modified asphalt.
出处
《公路工程》
2010年第1期150-154,共5页
Highway Engineering
关键词
沥青胶浆
硅藻土
高温动态剪切
高温性能
asphalt mortar
diatomite
Dynamic Shear Rheometer（DSR）
behavior at high-tem- perature
