REGENERATION PERFORMANCE OF AGED ASPHALT BASED ON RESPONSE SURFACE METHOD

被引：0
|
作者：
Teng, Xuqiu [1 ]
Chen, Weibin [1 ]
Tian, Weidong [1 ]
机构：
[1] Lanzhou Jiaotong Univ, Coll Civil Engn, Lanzhou 730070, Peoples R China
来源：
UNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN SERIES B-CHEMISTRY AND MATERIALS SCIENCE | 2020年 / 82卷 / 03期
关键词：
RAP mixture; Regeneration test; response surface methodology; rutting factor; low temperature performance;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The influence of various factors on the high and low temperature performance of aged asphalt in RAP mixture was analyzed in this paper. Taking the preheating temperature of aged asphalt and the addition of regenerative agent as the influence factors, rutting factor, stiffness modulus and creep rate as the index, the influence rules of various test factors on different indexes were analyzed to optimize the optimum conditions of asphalt regeneration test and test for verification. The results show that the best regenerative condition of asphalt is 143 degrees C and addition of the regenerative agent is 3.2%; the effect of regenerative agent content on each index is much greater than the preheating temperature of old asphalt. The research results have some guiding significance for the production of hot recycled mixture.
引用
收藏
页码：137 / 148
页数：12
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