Some fields of applications of automatic image analysis in civil engineering

Characterisation of fibres distribution in a steel fibre reinforced concrete with electrical resistivity measurements

“…Results provide data on distribution and density of fibres [13], but this technology cannot be easily transferred on site; notably because of the nature of probes. Image analysis on concrete samples also allows the assessment [14]. Assumptions on the general distribution of fibres are proposed, based on the analysis of samples sawed in several orientations, then analysed with image analysis tools.…”

Distribution of fibers in SFRC segments for tunnel linings

“…However, this information is limited to the mass surface (Lataste et al, 2008). Image analysis has been used to determine the distribution inside the concrete mass (Akkaya et al, 2000;Chermant et al, 2001;Lawler et al, 2003). However, this process can be slow and expensive.…”

“…To determine the actual reinforcement available in each direction of the concrete volume, due to the relevance of the distribution and orientation of the fibers in the development of suitable and reliable material properties for structural design, many researchers have studied the distribution of fibers theoretically and/or at the laboratory level, for example, Akkaya et al (2000), Chermant et al (2001), Chung (2001), Lawler et al (2003, Dupont and Vandewalle (2005), Ozyurt (2007), Lataste et al (2008), Lee and Kim (2010), and the comprehensive RILEM TC 162 (2003), among others.…”

Quantitative evaluation technique of Polyvinyl Alcohol (PVA) fiber dispersion in engineered cementitious composites

“…Several techniques, including image analysis and transmission X-ray photography [6][7][8][9][10], are available for evaluating the fiber dispersion in a composite, i.e., determining the degree to which the fibers are homogeneously dispersed in the composite. These are mostly applicable to non-organic fibers such as steel or glass fibers.…”