Author(s)

S Lan & L Heng

Abstract

An extensive large-scale test programme was conducted for a series of composite structural components under blast loading, which includes normal reinforced concrete (RC), profiled steel sheeting RC (PSSRC), steel-air-steel sandwich (SASS) and steel-concrete-steel sandwich (SCSS) slabs. Twenty-four specimens were tested in eight detonation phases; each comprising 100 kg of TNT at a standoff distance of five metres. The main parameters of the tests were the type of materials and the slab thickness. During testing, the air-blast pressures on the specimens and the accelerations of the specimens were captured by appropriate instrumentation. The maximum and permanent displacements were measured by a specially designed plasticine displacement gauge, Failure modes of each type of specimens were carefully observed and examined with different parameters. Major conclusions are summarised at the end of this paper.

Keywords