A mini-electric imaging survey with Wenner array was conducted on the tension face of the beams. ![]() Two types of cracks were investigated, i.e., artificial cracks made of plastic sheets inserted in concrete and cracks developed during a four-step loading test. A similar development trend of concrete compressive strength was also found. The study showed that resistivity measurements on the concrete specimens were able to detect the increase of concrete resistivity with the curing time that reached about 65 Ωm after 28 days of curing. This study presents results from an application of the electrical imaging method to monitor the development of cracks in fiber concrete beams. ![]() Accurate detection of damaged concrete zones plays an important role in selecting the proper remedial technique.
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