Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Youkun Cheng"'
Autor:
Youkun Cheng, Zhenwu Shi
Publikováno v:
Advances in Civil Engineering, Vol 2019 (2019)
In order to reduce early damage of bridge deck pavement concrete in cold regions, a certain content of nano-SiO2 is added into the concrete to enhance its durability. Through tests on four durability indexes, strength, frost resistance, resistance to
Externí odkaz:
https://doaj.org/article/0d689db9bd6d49aaa4f052ba6bfd6a1c
Publikováno v:
International Journal of Heat and Technology. 39:241-250
Many highways and railways in western China are built on permafrost roadbed. Frost heave and thaw settlement might cause diseases to frozen soil roadbed, such as deformation and cracking. For long-term operation, frozen soil roadbed should be kept st
Publikováno v:
International Journal of Safety and Security Engineering. 10:679-688
In special areas, the highways may suffer from such diseases as deformation, cracking, subsidence, and potholes, making highway maintenance a complex and difficult task. To obtain the law-term deformation law of the subgrade and accurately evaluate t
Autor:
Zhenwu Shi, Youkun Cheng
Publikováno v:
Journal of Sensors, Vol 2021 (2021)
The hidden nature of subgrades makes the effective monitoring of their deformation very difficult. This paper addresses this issue by proposing the use of fiber Bragg grating (FBG) sensing technology. Here, an FBG is encapsulated within a monitoring
Autor:
Zhenwu Shi, Youkun Cheng
Publikováno v:
Advances in Civil Engineering, Vol 2019 (2019)
In order to reduce early damage of bridge deck pavement concrete in cold regions, a certain content of nano-SiO2 is added into the concrete to enhance its durability. Through tests on four durability indexes, strength, frost resistance, resistance to
Publikováno v:
International Journal of Heat & Technology; Feb2021, Vol. 39 Issue 1, p241-250, 10p
Publikováno v:
Optik. 125:3564-3568
The graded index (GRIN) lens reduces the divergence angle of the beam exiting from the lead-in optical fiber, which results in the increasing of F–P cavity mirror areas. Surface errors of the increased mirrors cannot be ignored due to the machining