A New Data Interpretation Approach for Pile Thermal Integrity Testing-Video

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Video Summary

Qianchen Sun of Cambridge University presents a risk-based approach to interpreting thermal integrity test data for concrete piles. Piles can develop cracks, voids, inclusions, or other flaws during construction, which are difficult and costly to inspect or repair after the fact. Thermal testing uses sensors—often fiber-optic cables attached to the reinforcement cage—to measure heat released as concrete cures. Local temperature reductions can indicate defects.<br /><br />The proposed staged analysis begins with vertical scanning to identify and assess potentially defective regions. If needed, further stages use cross-sectional slicing, topology optimization, and 3D analysis to estimate defect size, location, and shape. Engineers can stop once they have enough information to judge pile quality, or continue analysis to support repair decisions. The approach aims to detect small defects accurately while limiting unnecessary analysis, and is being developed toward field validation, software tools, and future industry guidelines.

Keywords

thermal integrity test

concrete piles

defect detection

fiber-optic sensors

risk-based analysis