Inicio  /  Acta Scientiarum: Technology  /  Vol: 42 Par: 0 (2020)  /  Artículo
ARTÍCULO
TITULO

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

Fausto Batista Mendonça    
Girum Solomon Urgessa    
Rita Lazzarini Dutra    
Rene Francisco Boschi Gonçalves    
Koshun Iha    
José Atílio Fritz Fidel Rocco    

Resumen

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.

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