Search

Your search keyword '"Hu, Chichun"' showing total 37 results
Start Over Author "Hu, Chichun"
37 results on '"Hu, Chichun"'

8. New innovations in pavement materials and engineering: A review on pavement engineering research 2021

Author

Chen, Jiaqi, Dan, Hancheng, Ding, Yongjie, Gao, Yangming, Guo, Meng, Guo, Shuaicheng, Han, Bingye, Hong, Bin, Hou, Yue, Hu, Chichun, Hu, Jing, Huyan, Ju, Jiang, Jiwang, Jiang, Wei, Li, Cheng, Liu, Pengfei, Liu, Yu, Liu, Zhuangzhuang, Lu, Guoyang, Ouyang, Jian, Qu, Xin, Ren, Dongya, Wang, Chao, Wang, Chaohui, Wang, Dawei, Wang, Di, Wang, Hainian, Wang, Haopeng, Xiao, Yue, Xing, Chao, Xu, Huining, Yan, Yu, Yang, Xu, You, Lingyun, You, Zhanping, Yu, Bin, Yu, Huayang, Yu, Huanan, Zhang, Henglong, Zhang, Jizhe, Zhou, Changhong, Zhou, Changjun, and Zhu, Xingyi

Published
2021
Full Text
View/download PDF

14. Effects of aging on the properties of asphalt at the nanoscale

Author

Wang, P.E. Yuhong, Zhao, Kecheng, Glover, Charles, Chen, Ling, Wen, Yong, Chong, Dan, and Hu, Chichun

Subjects
Asphalt -- Analysis -- Mechanical properties, Atomic force microscopy -- Chemical properties -- Analysis -- Usage, Business, Construction and materials industries
Abstract

ABSTRACT Conventional rheological and chemical tests provide a global view of asphalt property and composition changes upon aging, but offer little details on the changes at the microscopic level. Using [...]

Published
2015
Full Text
View/download PDF

19. Optimal design on dowel length for cement concrete pavement

Author

Jiexian Ma, Yu Yuan, Hu Chichun, and Luo Yi

Subjects
Cement, Optimal design, Engineering, lcsh:TE1-450, business.industry, 02 engineering and technology, Structural engineering, Dowel, 01 natural sciences, Finite element method, 010101 applied mathematics, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Deflection (engineering), Bending moment, 0101 mathematics, business, lcsh:Highway engineering. Roads and pavements, Civil and Structural Engineering
Abstract

In order to compute the optimal dowel length in cement concrete pavement, semi-infinite beam on elastic foundation was deduced and modified for the analysis of dowel bars. The dowel deflection, bending moment and shearing were analyzed for dowel bars under the traffic loading, dowel length based on the second inflexion distance was computed and a relationship between dowel length and dowel diameter was established. The theoretical analysis found that the dowel length in Chinese specification is conservative. A finite element model was also established to simulate the dowel load system. Based on the result of maximum value and variation tendency of mises stress for different dowel diameters and dowel lengths, it is feasible to shorten dowel length specified in JTG D40-2002 by 50%. However, considering the construction tolerances in the making and sawing of joints in new pavement construction, which might add 50–150 mm to the required overall dowel length, it’s more appropriate to reduce the dowel length by 20% in practice. Keywords: Dowel bar, Mechanical analysis, Length design, Cement concrete pavement, Finite element model

Published
2016

37. Ferromagnetic and photocatalytic properties of pure BiFeO powders synthesized by ethylene glycol assisted hydrothermal method.

Author

Chen, Zhiwu, Jin, Wuliang, Lu, Zhenya, and Hu, Chichun

Subjects
BISMUTH iron oxide synthesis, MAGNETIC properties, BISMUTH iron oxide, HYDROTHERMAL synthesis, ETHYLENE glycol, FERROMAGNETISM, MULTIFERROIC materials
Abstract

Well-crystallized pure perovskite bismuth ferrite (BiFeO) powders have been synthesized at the temperature as low as 140 °C by a facile hydrothermal method assisted by ethylene glycol. Their structural, ferromagnetic and photocatalytic properties were investigated. It was found that the ethylene glycol played a key role in the formation of pure BiFeO at low-temperature. The BiFeO powders present a nearly spherical microstructure with an average diameter of approximately 10 μm, and which exhibit superstructures consisting of large amounts of nanoparticles with the average size of 8-20 nm. An obvious ferromagnetic response is observed for the as-prepared pure BiFeO powders, with a saturation magnetization M of 2.5 μ/g and a coercive field H of 13.1 Oe at room temperature. Moreover, the BiFeO powders exhibit both enhanced visible-light-driven photocatalytic decomposition of rhodamine B and favorable recycling capability. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results