IoT-enabled non-destructive concrete strength and damage assessment using surface-bonded PVDF film sensors
摘要
Concrete is the primary and most often utilized structural material in civil engineering. Prompt assessment of concrete strength is crucial for ensuring structural integrity and reducing construction delays, therefore preventing potential structural failures. This preliminary assessment guarantees concrete structures support loads throughout their operational lifespan and during construction. A major problem in the construction sector is the precise assessment of concrete strength and detection of possible damage without resorting to destructive testing. Traditional methods frequently necessitate labor processes and may be unfeasible for real-time monitoring. To address this challenge, IoT-based monitoring systems with Polyvinylidene Fluoride Film (PVDF) sensors offer an effective solution for damage detection and ongoing strength assessment at concrete structures. This research employed a polyvinylidene fluoride film sensor, utilizing surface-bonding method to affix sensor to cylindrical specimens. Trial phase lasted four weeks, incorporating assessments on 5th, 10th, and 15th days to detect any structural damage and evaluate required strength levels. This investigation confirmed that the findings achieved by PVDF-based wireless sensor were both dependable and practical. The correlation coefficient values are examined to confirm the relationship between data from IoT-based testing and compressive strength. All results are displayed graphically, demonstrating that this non-destructive method can precisely forecast concrete strength and detect structural problems. This work distinctly contributed by verifying the application of PVDF sensors for continuous, in-situ monitoring of concrete, offering an innovative method for early damage detection and assessing the structural integrity of the structure.