Production of Steel-Concrete Composite UHPFRC Elements for Experimental Tests of the Blast Resistance

Abstract

The resistance of structures to the effects of explosions is very current issue in these days. During explosion structures are subjected to extreme dynamic local loads and it is necessary to the structure and its reinforcement for this type of loading. In UHPFRC the reinforcement is evenly distributed throughout the structure in the form of dispersed steel fibres. Based on the knowledges of excellent mechanical properties of both steel and UHPFRC, there is an assumption that an appropriate combination of these materials in the sense of composite constructions should result in significantly less damage to the structure in the case of explosion. The paper is focused on the process of production of testing specimens intended for blast resistance tests. The first part of the paper describes tests elements and goals of the experiment. In the next part of the paper the design and material properties of the used concrete mixtures are described. Then production in the sense of formwork preparation and casting is described. At the end of the article, there is a brief comparison of the results achieved for specimens from UHPFRC and reference NSC.