The effect of freeze-thaw cycles on durability properties of SBS-modified bitumen

doi:10.1016/j.conbuildmat.2018.07.171

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	The effect of freeze-thaw cycles on durability properties of SBS-modified bitumen
	Nian, Tengfei 2; Li, Ping 1,2; Wei, Xiying 2; Wang, Penghui 2; Li, Huishan 2; Guo, Rui 3
刊名	Construction and Building Materials
	2018-10-30
卷号	187 页码:77-88
关键词	Chemical analysis Fourier transform infrared spectroscopy Freezing High temperature effects Styrene Thawing Thermal fatigue Bitumen Dynamic shear rheometer Freeze-thaw cycles Multiple stress creep recoveries Styrene butadiene styrenes
ISSN号	09500618
DOI	10.1016/j.conbuildmat.2018.07.171
英文摘要	To study the high-temperature characteristics of bitumen under the influence of freeze-thaw cycles, the results of DSR tests of bitumen and SBS-modified bitumen after 0, 3, 6, 9, 12, 15, and 18 freeze-thaw cycles were investigated. First, based on the simplified model for the DSR tests, the relation between the rheological parameters of the bitumen was analyzed. Then, in combination with the MSCR tests of the SBS-modified bitumen after freeze-thaw cycles, the relation between %R and Jnr was discussed. Finally, FTIR was used to analyze the changes in the chemical composition of the bitumen under freeze-thaw cycles. The results showed that the incorporation of SBS modifiers can increase the elasticity of the bitumen significantly and slow the tendency of the bitumen's complex shear modulus to increase with the freeze-thaw cycles to a certain extent. The SBS modifiers also can reduce the bitumen's temperature sensitivity and improve its rutting resistance. After the freeze-thaw cycles, G∗/sinδ decreased as temperature increased, and G∗sinδ showed an exponential decay with increasing temperature. With an increase in the number of freeze-thaw cycles, G∗sinδ of the bitumen and SBS-modified bitumen increased gradually, which indicated that the bitumen's fatigue resistance weakens gradually after freeze-thaw cycles. The %R0.1 and %R3.2 of SBS-modified bitumen showed a decreasing trend under different stress levels, and the %R3.2-%R0.1 increased, which indicates that bitumen's high temperature characteristics and temperature fatigue performance show an attenuating trend. The difference between the FTIR spectra of the SBS-modified bitumen fingerprint area after a freeze-thaw cycle was reflected largely in the significant increase in the 1700 cm−1 carbonyl group and 1031 cm−1 sulfoxide group peaks, while the two peaks at 967 cm−1 and 700 cm−1 were relatively stable. These results provide a theoretical basis and technical support for the design, material selection, popularization, and application of an SBS-modified bitumen mixture in roads in regions with seasonal freezing. © 2018 Elsevier Ltd
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000446286400007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150562]
专题	土木工程学院
作者单位	1.Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Civil Engineering and Architecture, Shaanxi University of Technology, Hanzhong; 723000, China
推荐引用方式 GB/T 7714	Nian, Tengfei,Li, Ping,Wei, Xiying,et al. The effect of freeze-thaw cycles on durability properties of SBS-modified bitumen[J]. Construction and Building Materials,2018,187:77-88.
APA	Nian, Tengfei,Li, Ping,Wei, Xiying,Wang, Penghui,Li, Huishan,&Guo, Rui.(2018).The effect of freeze-thaw cycles on durability properties of SBS-modified bitumen.Construction and Building Materials,187,77-88.
MLA	Nian, Tengfei,et al."The effect of freeze-thaw cycles on durability properties of SBS-modified bitumen".Construction and Building Materials 187(2018):77-88.