Performance of double reinforced concrete panel against blast hazard

Terrorist attacks have used conventional high explosives. Such attacks need the development of blast resistant construction. Most of sandwich panels used in protection purpose have the capability of dissipating energy by large plastic deformation under blast loading. These sandwich panels could not resist repetitive explosions. This panel should be replaced with new one to resist another explosion event. The aim of this study is to use double reinforced concrete panels to achieve high resistance against different explosion charges and to resist repetitive explosion shots. This sandwich panel is composed of two reinforced concrete slabs connected by number of helical springs. The blast field test is carried out. The finite element analysis (FEA) is also used to model the double reinforced concrete panels under shock wave. The performance of the double reinforced concrete panel is studied based on detonating different TNT explosive charges. There is a good agreement between the results obtained by both the field blast test and the numerical simulation. The spring improves the double reinforced concrete panel performance under the blast wave propagation.