Effect of layered double hydroxides on ultraviolet aging properties of different bitumens

被引：25
|
作者：
Wu, Hong [1 ]
Li, Lian [2 ]
Yu, Jianying [1 ]
Xu, Song [1 ]
Xie, Dong [3 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
[2] Wuhan Univ Technol, Inst Eth, Wuhan 430070, Peoples R China
[3] Wuhan Univ Technol, Mat Sci & Engn, Wuhan 430070, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 111卷
关键词：
Layered double hydroxides; Bitumen; Physical properties; Rheological properties; Ultraviolet aging; MODIFIED ASPHALT; RHEOLOGY; BINDERS; MICROSTRUCTURES; RESISTANCE; MORPHOLOGY; POLYMER;
D O I：
10.1016/j.conbuildmat.2016.02.140
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The objective of this paper was to investigate the effect of layered double hydroxides (LDHs) on physical and rheological properties of different bitumens (SK-90, TY-90 and GF-70) before and after ultraviolet (UV) aging. The results show that the physical properties of different bitumens are slightly influenced by LDHs. And the effect of LDHs on rheological properties of investigated bitumens largely depend on the bitumen nature, and LDHs show the least influence on rheological properties of SK-90 with highest phase angle and lowest complex modulus among the three bitumens. Due to the UV aging, LDHs modified bitumen shows the lower softening point increment, viscosity aging index and complex modulus aging index in comparison with the unmodified bitumens, indicating their good UV aging resistance. Compared with SK-90 and GF-70, LDHs show a better improvement in UV aging resistance of TY-90 which is more sensitive to UV aging. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：565 / 570
页数：6
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