Abstract
Crack data acquisition system with CCD camera was developed, and diagonal cracks and flexural cracks generated in reinforced concrete beams were measured in detail by this system. Crack width distribution and crack angle distribution, total length of crack, average crack width and crack area were calcurated using detailed crack data.
Relationship between crack data and damage degree of concrete beams were considered. It was found that crack density is suited as damage index of concrete structures.
