EPS foam blast attenuation in full-scale field test of reinforced concrete slabs

• Autor(a) principal: Mendonça, Fausto Batista
• Data de Publicação: 2019
• Outros Autores: Urgessa, Girum Solomon, Dutra, Rita Lazzarini, Gonçalves, Rene Francisco Boschi, Iha, Koshun, Rocco, José Atílio Fritz Fidel
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Acta scientiarum. Technology (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/40020
• topic: blast test; expanded polystyrene; non-confined plastic explosive; pressure reduction; reflected pressure

Predicting explosion parameters is an important step when planning for blast tests or the design of blast resistant buildings. This paper presents a comparison of recorded pressure that was reflected on the surface of reinforced concrete slabs with and without EPS (Expanded Polystyrene) foam retrofit measured from a detonation of 2.7 kg of non-confined plastic explosive. Two 50 MPa reinforced concrete slabs measuring 1.0x1.0x0.08 m, simply supported on two sides were tested. The explosive was suspended at a distance of 2.0 m from the upper surface of the slabs; one of the slabs had 5.0 cm thick foam on the top side. Eight piezoelectric pressure sensors were positioned at a distance of 2.0 m from the explosive. Results showed that the foam retrofit reduced the reflected pressure by approximately 57% when compared to the slab without EPS foam retrofit.