Blast resistance of multi-layered concrete slabs

Abstract

This paper compares blast resistance of multi-layered and single-layered concrete panels having different thickness and reinforcement and subjected to various explosive charges. The panels were analysed by ultrasound measurements before the application of blast loading; the velocity of transfer of ultrasound waves through the panels was determined. The same measurement was conducted after exposing the panels to contact explosion and the damage was evaluated based on the determined changes. Nine panels were tested, four of them single-layered and five of them multi-layered. The weights of Pentrite explosive charges were 150 g, 300 g and 500 g. The results show that multi-layered panels are suitable for the protection of soft targets or as cladding of load-bearing structures.

On Diagnostics of Military Fortification Constructions

“…These methods are only partially appropriate for determining whether a military protective structure can withstand additional loads without jeopardize the concealed force. The field testing of structures and materials suitable for the construction of military protective structures is currently underway [10,11,18,19,20].…”

“…6) were tested. Various modifications of the cementitious materials and multi-layer concrete slabs [18] were tested. For example, the High-Performance Fibre Reinforced Concrete (HPFRC) and also the Ultra High-Performance Fibre Reinforced Concrete (UHPFRC).…”