Enhancement effect of rock asphalt on mixture of soft asphalt and hard asphalt compound binder

被引：0
作者：
Li, Li-Han [1 ]
Sun, Yan-Na [1 ]
Wang, Fei [1 ]
机构：
[1] Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2013年 / 16卷 / 06期
关键词：
Enhancement effect; Gilsonite rock asphalt; Mix bonded by soft asphalt and hard asphalt compound binder; Road engineering;
D O I：
10.3969/j.issn.1007-9629.2013.06.030
中图分类号：
学科分类号：
摘要：
Using asphalt routine test, dynamic shear rheological experiment and infrared spectrum test, enhancement effect and strengthening mechanism of rock asphalt varieties and content on soft asphalt and hard asphalt compound binder were discussed. The rut test and fatigue test were used to study the enhancement effect of rock asphalt content on warm mixture of soft asphalt and hard asphalt compound binder, and these performances were compared with hot mix asphalt. The results show that in the same content, enhancement effect of Gilsonite rock asphalt is significantly higher than that of BMA rock asphalt. Softening point and the rutting factors of the soft asphalt and hard asphalt compound binder can be effectively improve by Gilsonite rock asphalt, and rutting factor of the binder would grow with time. Rut resistance of the warm mixture is enhanced by Gilsonite rock asphalt enlarges with the increase of rock asphalt content considerably. At a certain content of rock asphalt, the rutting resistance and fatigue life of the warm mixture asphalt are higher than that of the hot mix asphalt with the same gradation. Furthermore, the enhancement effect of Gilsonite rock asphalt is validated in the case of test road.
引用
收藏
页码：1087 / 1091
页数：4
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