Digital Image Correlation for Evaluation of Cracks in Reinforced Concrete Bridge Slabs

In proof-loading of concrete slab bridges, advanced monitoring methods are required for identification stop criteria. this study, Two-Dimensional Digital Image Correlation (2D DIC) is investigated as one the governing measurement crack detection and evaluation. The investigations deemed to provide valuable information about DIC capabilities under different environmental conditions evaluate in relation criterion verifications. Three Overturned T-beam (OT) Reinforced Concrete (RC) slabs used assessment. Of these, two situ strips (0.55 × 3.6 9.0 m) cut from a full-scale OT-slab bridge with span 9 m downscaled tested laboratory (0.37 1.7 8.4 m). 2D results includes full-field plots, investigation time widths. Grey-level transformation was tests ensure sufficient readability comparable test. Crack initiation test (with speckle pattern) (plain surface) were detected at intervals approximately 0.1 mm 0.3 0.2 mm, respectively. Consequently, paper evaluates more qualitative approach results, where indications can be criterion. It furthermore identified that reached high load levels, implying importance target load.