Rocket blast resistance of the fully demountable high performance FRC tongue and groove blocks

Abstract

AbstractWithin the scope of this study, the design and testing of a fully demountable high‐performance fiber‐reinforced concrete (FRC) barriers with high resistance to sudden dynamic explosion and impact loadings is investigated. In order to solve such an engineering problem, a special FRC “tongue and groove” blocks are designed in a way that could be constructed by two persons to form barriers of various shapes and sizes by combining them easily. The structures produced with these blocks were produced using a hybrid, special FRC mixture in order to resist various bullets, rocket launchers, and explosion effects to protect the person behind them. Within the scope of this study, the resistance of five different special FRC mixtures with different properties against sudden dynamic blasting effects was determined by comparing and interpreting the acceleration‐time and strain‐time measurements taken from the wall directly. The results obtained from the dynamic blasting tests carried out in the field were compared with the results of the numerical analysis performed using the Ls‐Dyna finite element software. As a result of the study, the barrier structure produced with special FRC, in which hybrid nylon and steel fibers are used as reinforcement, exhibited the most successful results for absorbing the energy caused by the rocket blast loadings.