Crack sealing is a preventive measure aimed at preserving pavement. Due to the lack of an efficient tool for evaluating the quality and durability of such interventions, some of the ministère des Transports du Québec territorial divisions hesitate to undertake them. It is very difficult to evaluate these interventions in the field with any degree of precision because the road has to be closed to traffic to allow manual inspection and measurement of defects in workmanship. Defects observed a year after crack sealing or treatment are cracks entirely bypassed, spalling, splitting and lifting.
To assess the feasibility of using video images of cracks that were sealed or filled in order to evaluate the performance of these interventions. The procedure consists in making videos of pavement in which cracks have been treated. Following this, a technician scans the images on a microcomputer for defects. The images should have a high enough resolution to allow the technician to identify sealing failures. Data will be automatically entered in the same microcomputer using software that allows the defects to be organised in terms of the road network's linear reference system.
To determine the types of video equipment that would be suitable for this application. To determine the image resolution needed to allow identification of defects in crack treatment such as cracks entirely bypassed, spalling, splitting and lifting. To confirm the feasibility of using field images to visualise defects in crack treatment. To determine the cost of the video equipment, microcomputers and software required for taking field images and processing them semi-automatically in non-real time.