Abstract
This study was performed to experimentally track the initial water-to-cement (w/c) ratio of hardened concrete by visualizing capillary porosity. The specific objective is to evaluate the accuracy of various image processing methods to investigate the fluorescence intensity of dyed epoxy resin infiltrated capillary pores as a way to trace the initial w/c ratio. The epoxy resin was infiltrated into cement paste, mortar, and concrete with different w/c ratios, and thin section images of those samples were prepared. The fluorescence intensities of the samples were quantitatively analyzed by applying Otsu, triangular, and mean methods to histogram data. A proportional relationship was established between the quantified fluorescence intensity and the designed w/c ratios of the paste, mortar, and concrete samples. Accuracy was validated by comparing histogram analysis with a visual analysis method, and the most suitable method for evaluating the initial w/c ratio was proposed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
