Characteristics of ultra-high performance cementitious composites under explosion

Ultra-high performance cementitious composites (UHPCC) were prepared by substitution of ultra-fine industrial waste powder for large quantity of cement by weight and replacement of ground fine quartz sand with natural fine sand with the maximum particle diameter of 2.5 mm. And in the prepared UHPCC, the basalt stones with high elastic module and high strength were added, whose maximum particle diameters was 15 and 10 mm, respectively. Nine contact-explosion tests were performed for concrete targets and the macroscopic damages were described. The explosive compression coefficients were computed by the explosion-induced infundibular crater size and a formula was proposed to calculate the explosion-induced infundibular crate depth. The results indicate that the prepared UHPCC have remarkable anti-explosion and anti-scabbing properties and that the explosion compression coefficient is inversely proportional to the square root of tensile strength.