Projectiles would be released by an accident such as explosions, and impinge on structures. Airplanes, cars and so on can also be impact objects. The explosion and clash occasionally cause fire if there are fire load like oil, fuel and any other combustible materials. Local damage of concrete structures, i.e. spalling, scabbing, perforation, would occur if the concrete structures are impacted by high velocity projectiles. Scabbing and perforation must be prevented in order to protect people and any other properties inside of the structure. Moreover if fire is assumed to occur after the impact, fire must not spread to other compartments or spaces. Therefore, fire tests on concrete plates impacted by high velocity projectiles were carried out in order to know fire behavior of the concrete plates. In addition, temperatures in concrete plates were numerically calculated in order to know the inside temperatures. As the results of study, cracks produced in concrete plates spalled by impact lead to less effect on thermal insulation performance of the plates.
