The present study includes an experimental investigation on the crack propagation in the concrete cracked due to alkali-silica reaction (ASR). The fracture energy and tension softening curves of the ASR damaged concrete were obtained by three-point bending tests for single…
The present study includes an experimental investigation on the crack propagation in the concrete cracked due to alkali-silica reaction (ASR). The fracture energy and tension softening curves of the ASR damaged concrete were obtained by three-point bending tests for single notched concrete beams. An image analysis by using a digital image correlation method was carried out in order to detect the crack propagation behavior. This method of the image analysis is conducted based on a region-based matching technique in order to calculate the displacement of any portion of the concrete surface. As for the macroscopic damage in the concrete the ASR induced cracks that can be observed on the surface of concrete were evaluated and classified into their widths, lengths and directions. The experiments show that these ASR-induced cracks influence on the crack propagation in the specimen under the bending.