Pavement performance and anti-aging property of microscale flyash/SBS modified asphalt

被引：1
作者：
Tang, Xinde [1 ]
Kong, Xiangli [2 ]
He, Zhongguo [1 ]
Li, Jun [2 ]
机构：
[1] Shandong Jiaotong Univ, Inst New Mat, Jinan 250023, Peoples R China
[2] Shandong High Speed Construct Mat Co Ltd, Jinan 250014, Peoples R China
来源：
OPTOELECTRONIC MATERIALS, PTS 1AND 2 | 2010年 / 663-665卷
关键词：
Composite modified asphalt (CMA); Microscale flyash; SBS; Anti-aging;
D O I：
10.4028/www.scientific.net/MSF.663-665.1333
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Microscale flyash/SBS composite modified asphalts (CMA) were prepared by melt blending. Rolling thin film oven test (RTFOT) was employed to study the anti-aging property. Both flyash and SBS disperse homogeneously in the base asphalt, which lead to an improvement in terms of toughness, strength, and thermal stability. Moreover, microscale flyash plays a significant role in the CMA. The effect of flyash on the properties of SBS modified asphalt appears as a decreasing penetration, an increasing softening point, and a decreasing ductility. The anti-deformation ability under high temperature of the CMA improved significantly. In comparison with that of the base asphalt, the softening point of the CMA decreases after aging, which maybe attribute to the different rheological properties between the CMA and the base asphalt. Compared to that of SBS modified asphalt, the anti-aging property of CMA improved significantly. This demonstrates that the microstructure of flyash can prevent oxygen from diffusing and permeating.
引用
收藏
页码：1333 / +
页数：2
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