Quantitative Analysis of the Diffusion Behavior of Rejuvenator in Aged Asphalt

doi:10.12141/j.issn.1000-565X.200359

IR > 土木工程学院

	Quantitative Analysis of the Diffusion Behavior of Rejuvenator in Aged Asphalt
	Mao, Yu; Li, Ping; Nian, Tengfei; Mu, Bobo; Wang, Meng
	2021-02-01
发表期刊	Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science)
ISSN	1000-565X
卷号	49 期号:2 页码:79-87
摘要	Rejuvenator adjusts the components of the aged asphalt through diffusion and miscibility, so as to restore its road performance and make it meet the application requirements. Therefore, the diffusion of rejuvenator is the main technical problem influencing the regeneration effect of aging asphalt. Firstly, an analysis method of rejuvenator diffusion coefficient was established by using Fourier transform infrared spectroscopy technique and taking the characteristic absorption peak area as the measurement standard. Then, using CTBN as a tracer, a self-designed diffusion test was used to quantitatively analyze the diffusion amount of the rejuvenator with the characteristic absorption peak intensity, and calculate the rejuvenator diffusion coefficient. The results show that the characteristic peak at 1739cm-1 of the infrared spectrum of the rejuvenator change significantly after CTBN labeling, and the peak area shows a linear relationship with the change of CTBN content. The diffusion amount of rejuvenator in aged asphalt can be effectively reflected by establishing a standard curve. Taking the peak area ratio D1739/D1458 as the measurement standard, the established theoretical analysis method of the rejuvenator diffusion coefficient has certain reliability. The diffusion coefficient is closely related to the concentration change, and can effectively reflect the degree of aging asphalt regeneration. The diffusion coefficient and the cumulative diffusion amount are proportional to the temperature change, and the growth rate of the two is basically the same. The diffusion rate at the same tempera-ture shows a decreasing trend with the increase of the vertical depth. It is consistent with the change trend of the rejuvenator diffusion amount, and is in compliance with Fick's second law. © 2021, Editorial Department, Journal of South China University of Technology. All right reserved.
关键词	Asphalt Fourier transform infrared spectroscopy Reliability analysis Application requirements Characteristic absorption Characteristic peaks Concentration change Diffusion behavior Linear relationships Measurement standards Temperature changes
DOI	10.12141/j.issn.1000-565X.200359
收录类别	EI
语种	中文
出版者	South China University of Technology
EI入藏号	20211610215720
EI主题词	Diffusion
EI分类号	411.1 Asphalt ; 801 Chemistry
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148462
专题	土木工程学院
作者单位	School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Mao, Yu,Li, Ping,Nian, Tengfei,et al. Quantitative Analysis of the Diffusion Behavior of Rejuvenator in Aged Asphalt[J]. Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science),2021,49(2):79-87.
APA	Mao, Yu,Li, Ping,Nian, Tengfei,Mu, Bobo,&Wang, Meng.(2021).Quantitative Analysis of the Diffusion Behavior of Rejuvenator in Aged Asphalt.Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science),49(2),79-87.
MLA	Mao, Yu,et al."Quantitative Analysis of the Diffusion Behavior of Rejuvenator in Aged Asphalt".Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) 49.2(2021):79-87.