Fig. 3From: Image Analysis and DC Conductivity Measurement for the Evaluation of Carbon Nanotube Distribution in Cement MatrixThe fractured surface of the MWNT-embedded cement composites fabricated under different flow (W/C ratio) after having the image thresholding, reversion, and binarization processes (image size: 570 × 426 pixel): a W26–M06, b W30–M06, c W38–M06, and d W42–M06.Back to article page