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Your search keyword '"Yao, Zhanyong"' showing total 176 results
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176 results on '"Yao, Zhanyong"'

8. Effect of Degraded Subgrade Stiffness on Rail Geometry and Train Vibration in High-Speed Railways

Author

Jiang, Hongguang, Liu, Shun, Li, Yixin, Chi, Haoran, Zhang, Jizhe, Liang, Ming, Yao, Zhanyong, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Tutumluer, Erol, editor, Nazarian, Soheil, editor, Al-Qadi, Imad, editor, and Qamhia, Issam I.A., editor

Published
2022
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44. Laboratory evaluation of rediset modified bitumen based on rheology and adhesion properties

Author

Zhang, Jizhe, Airey, Gordon D., Grenfell, James, and Yao, Zhanyong

Subjects
Viscosity -- Analysis, Bituminous materials -- Research -- Thermal properties -- Mechanical properties, Asphalt additives -- Research, Rheometers -- Usage, Moisture barriers -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT Warm mix asphalt (WMA) could significantly reduce the production temperature of asphalt mixtures. Lower production temperature meaning reduced fossil fuel consumption and greenhouse gas emission which in turn avoid [...]

Published
2017
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46. The Effects of Activation Treatments for Crumb Rubber on the Compatibility and Mechanical Performance of Modified Asphalt Binder and Mixture by the Dry Method

Author

Liang, Ming, Qiu, Zhengmei, Luan, Xuehao, Qi, Cong, Guo, Ning, Liu, Zhaoxin, Su, Linping, Yao, Zhanyong, and Zhang, Jizhe

Subjects
Materials Science (miscellaneous)
Abstract

Compatibility and mechanical performance of crumb rubber (CR)-modified asphalt and mixtures prepared by the dry method are poor at present, which limits the application of dry-mixed asphalt rubber in paving engineering. To solve this problem, various activated treatments for CR were performed, and the modified asphalt binder was prepared by the dry process in this study, aiming to activate the CR as the modifier and improve the compatibility of CR-asphalt blends. The effects of pre-treating methods of high temperature, pre-swelling, and microwave treatment on rutting resistance and compatibility of the asphalt binder and asphalt mixture were evaluated. Furthermore, the dynamic shear rheometer (DSR) of temperature sweep, Brookfield rotary viscosity, physical properties, rutting resistance, and microstructure of modified asphalt were measured. The results indicated that the three treatments have a pronounced effect on the high temperature performance of the crumb rubber-modified asphalt (CRMA) binder in the dry process and modified asphalt storage stability improvement. The high-temperature and microwave pre-treatment for CR lead to the largest complex modulus, viscosity, and rutting factor. Moreover, high-temperature, pre-swelling, and microwave treatment for CR significantly increases the dynamic stability of dry-mixed asphalt mixtures, which indicates the enhanced resistance to permanent deformation. In microscopy, homogeneous and compatible states were obtained for asphalt modified by high temperature-treated CR and pre-swelled CR, in which the strong interaction occurs among rubber molecules and the asphalt component. The microstructure of dry CR-asphalt blends sheds light on the mechanical performance. Consequently, activated CR modification for the asphalt binder by the dry process in this study is a promising technology, and other properties need to be verified in the future.

Published
2022

50. Investigation on Mechanical and Microstructure Properties of Silt Improved by Titanium Gypsum-Based Stabilizer.

Author

Lin, Qiqi, Zhen, Xidong, Rong, Yu, Li, Yunlong, Zhang, Haiyan, Zhang, Qiping, Yao, Zhanyong, and Yao, Kai

Subjects
SILT, LIME (Minerals), TITANIUM, ALLUVIAL plains, SOLID waste, INDUSTRIAL wastes, ALLUVIAL streams
Abstract

Silt in the Yellow River alluvial plain is widely spread, but its uniform particle size and high roundness make it unsuitable as a subgrade filling material, while titanium gypsum (TG) is an industrial solid waste in Shandong Province, not only occupying land resources but also causing water and air pollution. In order to improve the engineering performance of silt, reduce the pollution of solid waste titanium gypsum to the environment and reduce the engineering cost, considering the engineering characteristics of titanium gypsum, it was combined in specific amounts with cement and lime to create a titanium gypsum-based stabilizer (TS) in this study. The effect of curing conditions and TS content on silt improvement was studied through laboratory experiments. The mechanical properties of the stabilized silt were investigated by unconfined compression test (UCT), and the mineral composition and pore structure were analyzed by scanning electron microscopy (SEM) test, X-ray diffraction (XRD) test, and mercury injection pore (MIP) test. The test results show that TS could effectively improve the unconfined compressive strength of silt, and the strength of stabilized silt gradually increases with the curing period and TS content. In terms of the porosity, it decreases with the increase of the curing period and TS content. From the microstructure perspective, this is mainly due to the formation of ettringite and C-S-H during the stabilization of silt by TS. [ABSTRACT FROM AUTHOR]

Published
2023
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