Abstract
RC specimens using reactive aggregates have been carried out for a long-term exposure test over about 5 years at outdoor environment. After 1850 days of exposure, fracture in bended part of stirrup is reproduced. In this paper, the authors mainly evaluate the external and internal deteriorations near the fracture position. It is known that restraint for expansive force is reduced due to the fracture of stirrup. Thus, it is found that the external crack width near the fracture location has an intense increase; while a great crack is confirmed to spread from the center of concrete to the exterior of surface and cut throughout the fracture location.
