ABSTRACT In designing defensive structures, often dynamic loadings such as blast and impact is taken into account. With the progress of technologies of ballistic shield, preparing materials with the ability to withstand dynamic loads is considered by many scholars. For this ability, the concrete has a vast usage as an effective material. The present research, toward this end, will exhibit experimental and analytical processes of heavy concrete (high density) blast resistance and improving its behavior against the explosion, compared to conventional concretes. The research is conducted through 3 stages: 1-Final mixing plans are, presented and after sampling, testing physical and mechanical properties, according to BS and ASTM standards, of cubic specimens with a size of 15 cm by15 cm and cylindrical specimens with a size of 15 cm by 30 cm is done and results are given 2-in order to study the explosive resistance, specimens sizing 50×50×10cm were prepared and after preparing the conditions of field test using TNT explosive, placing the explosive at 0, 10 and 20 cm distances, an explosion was performed on the pieces. 3-conclusion: after experimental studies, it was found that special heavy concrete for this research has better performance compared with conventional concrete
