Rheological Property Evaluation of Heavy Bio-oil Recycled Asphalt Based on DSR Test

被引：0
|
作者：
Fan S. [1 ]
Zhu H. [1 ,2 ]
Zhong W. [3 ]
机构：
[1] School of Civil Engineering, Chongqing Jiaotong University, Chongqing
[2] National Local Joint Laboratory of Materials for Transportation Civil Engineering, Chongqing Jiaotong University, Chongqing
[3] Hunan Communications Research Institute Co., Ltd., Changsha
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2022年 / 25卷 / 03期
关键词：
DSR test; Fatigue property; Heavy bio‑oil recycled asphalt; High temperature stability; Rheological property; RTFOT test;
D O I：
10.3969/j.issn.1007-9629.2022.03.015
中图分类号：
学科分类号：
摘要：
To study the rheological properties of heavy bio‑oil recycled asphalt, the heavy bio‑oil was mixed into 70# asphalt and SBS modified asphalt aged by rotary film oven test (RTFOT) to prepare heavy bio‑oil recycled asphalt, and the rheological properties were investigated via dynamic shear rheology (DSR) test. The results show that the fatigue resistance, low‑temperature crack resistance and viscosity ratio of aged asphalt are improved and the high‑temperature rutting resistance is reduced after mixing with heavy bio‑oil. The asphalt is subject to irrecoverable permanent deformation at low frequency loading. The improvement effect of heavy bio‑oil on 70# aged asphalt is better than that of SBS modified asphalt. In addition, it is suggested that the suitable content of heavy bio‑oil is 4%, because the properties of recycled asphalt are restored to the original asphalt at this content. © 2022, Editorial Department of Journal of Building Materials. All right reserved.
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页码：320 / 326
页数：6
相关论文
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