Research on Real-Time Monitoring of Strain Behavior of Concrete under Freezing-Thawing Cycle by White Light Interferometer | Zendy

Haifeng Lv | Zendy; Xianglong Kong | Zendy; Jie Ren | Zendy; Xuefeng Zhao | Zendy; Changsen Sun | Zendy

Open Access

Research on Real-Time Monitoring of Strain Behavior of Concrete under Freezing-Thawing Cycle by White Light Interferometer

Author(s) -

Haifeng Lv,

Xianglong Kong,

Jie Ren,

Xuefeng Zhao,

Changsen Sun

Publication year - 2022

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2022/8049092

Subject(s) - materials science , interferometry , strain (injury) , white light , optical fiber , compensation (psychology) , composite material , optics , residual , stage (stratigraphy) , white light interferometry , cylinder , optoelectronics , mechanical engineering , medicine , psychology , paleontology , physics , algorithm , computer science , psychoanalysis , biology , engineering

To study the degenerative process of concrete subjected to freezing-thawing (F-T) cycles in real-time, the strain behavior of concrete cylinder was monitored by a fiber optic F-T testing method based on the white light interferometer (WLI) technique. The principle of the WLI technique was described in detail and the design of the fiber optic testing method. Two mixed proportions of concrete immersed in 3.5% NaCl solution were tested in a freeze-thaw testing machine. The theory and method of temperature compensation were stated in detail. The results indicated that the variation of strain decreases in the cooling stage and increases in the heating stage in a F-T cycle. The residual strain was generated in the test.

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