Fig. 3

Demonstration of Scalable Image-Based Sorptivity Measurements for Paste, Mortar, and Concrete. (a) Adaptation of the technique to various specimen sizes; (b) schematic side views of paste to concrete specimens with square to rectangular cross-sections; (c) aspect ratio-based correction for square and rectangular sections; (d) fixture arrangement for different specimen heights ensuring consistent lighting; (e) USB cameras used for imaging testing specimens from two different viewing angles, and (f) feedforward neural network correlates adjusted time factors with wetted area ratios for reliable fluid penetration or sorptivity estimates of paste, mortar, and concrete specimens.