研究目的
Investigating the feasibility of distributed fiber optic sensor for corrosion monitoring of steel bars embedded in concrete.
研究成果
Spirally winding the optical fiber on steel bar with a spacing of 10 mm does not compromise the bond strength of steel–concrete interface and the corrosion resistance of reinforced concrete beams. The distributed sensor data can be used to estimate the corrosion induced steel loss and predict concrete cracking.
研究不足
The study did not apply additional mechanical loading to the tested specimens, which is a common condition in real-world civil engineering applications. Further research is needed to test the performance under mechanical loading.
1：Experimental Design and Method Selection:
The study compares two sensor installation methods for corrosion monitoring in reinforced concrete.
2：Sample Selection and Data Sources:
Steel bars embedded in concrete were used with optical fibers installed in two different methods.
3：List of Experimental Equipment and Materials:
Optical fibers, steel bars, concrete, and electrochemical testing equipment were used.
4：Experimental Procedures and Operational Workflow:
Pull-out testing and electrochemical testing were conducted to evaluate the bond strength and corrosion resistance.
5：Data Analysis Methods:
The strain distributions measured from the distributed sensors were analyzed to quantify the corrosion condition.
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