Application of FBG Strain Sensor with Low Temperature Sensitivity in Static Pressure PHC Pipe Pile Penetration Test

2018 ◽  
Vol 55 (4) ◽  
pp. 040602
Author(s):  
王永洪 Wang Yonghong ◽  
张明义 Zhang Mingyi ◽  
张春巍 Zhang Chunwei ◽  
白晓宇 Bai Xiaoyu ◽  
刘倩 Liu Qian
Keyword(s):  
Low Temperature ◽  
Temperature Sensitivity ◽  
Static Pressure ◽  
Strain Sensor ◽  
Penetration Test ◽  
Pipe Pile ◽  
Pile Penetration

scholarly journals Study on Performance Damage and Mechanism Analysis of Asphalt under Action of Chloride Salt Erosion

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3089
Author(s):  
Peilei Zhou ◽  
Wensheng Wang ◽  
Lili Zhu ◽  
Haoyun Wang ◽  
Yongming Ai
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
High Temperature ◽  
Low Temperature ◽  
Temperature Sensitivity ◽  
Salt Solution ◽  
Solution Concentration ◽  
Chloride Salt ◽  
Temperature Performance ◽  
Low Temperature Performance

This study aims to investigate the performance evolution and mechanism of asphalt under action of chloride salt erosion. Asphalt samples soaked with five different snow melting chloride salt concentrations were taken as the research object. Then, the high-temperature performance, low-temperature performance, temperature sensitivity and asphalt–aggregate adhesion property of asphalt samples were carried out. Additionally, Fourier transform infrared spectroscopy (FTIR) was used to explore the mechanism of chloride salt erosion on asphalt. Test results showed the linear variation relationships of high-temperature performance, low-temperature performance and temperature sensitivity with chloride salt concentrations. The high-temperature performance of asphalt would be improved by chloride snowmelt salt. With the increase in the chloride salt solution concentration, the low-temperature performance of asphalt became worse, and the temperature sensitivity increased. Moreover, after the effect of the chloride salt solution, the asphalt–aggregate adhesion property decreased with the increase in the chloride salt solution concentration. It is necessary to control the amount of chloride snowmelt salt in the actual snow removal projects. Finally, based on Fourier transform infrared spectroscopy, the mechanism of chloride salt erosion on asphalt was preliminarily explored. With the increase in the chloride salt solution concentration, the proportion of light components (saturated fraction, aromatic fraction) in asphalt decreased, and the proportion of heavy components (resin and asphaltene) with good thermal stability increased.

Fiber interferometry with low temperature sensitivity

2020 ◽  
Author(s):  
Zitong Feng ◽  
Vincent Michaud-Belleau ◽  
Jayanta K. Sahu ◽  
Johan Nilsson ◽  
Christophe A. Codemard ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Sensitivity

Microwave-Vacuum Integrated Cavity with a Low Temperature Sensitivity for Cs Fountain Clocks

2021 ◽  
Author(s):  
Fasong Zheng ◽  
Fang Fang ◽  
Weiliang Chen ◽  
Kun Liu ◽  
Shaoyang Dai ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Sensitivity

High sensitivity, low temperature-crosstalk strain sensor based on a microsphere embedded Fabry–Perot interferometer

2020 ◽  
Vol 310 ◽  
pp. 112048
Author(s):  
Ke Tian ◽  
Meng Zhang ◽  
Jibo Yu ◽  
Yuxuan Jiang ◽  
Haiyan Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Strain Sensor ◽  
High Sensitivity ◽  
Fabry Perot
Sign in / Sign up

Export Citation Format

Share Document