Blast mitigation using low-density EPS concrete: An experimental study
This paper reports the results from an experimental study on the blast loading of low-density expanded polystyrene (EPS) concrete used for mitigation purpose. A volume fraction of 75 % is considered for the EPS. The effect of the presence of a front plate, attached to the tested EPS concrete sample,...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509524011136 |
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| Summary: | This paper reports the results from an experimental study on the blast loading of low-density expanded polystyrene (EPS) concrete used for mitigation purpose. A volume fraction of 75 % is considered for the EPS. The effect of the presence of a front plate, attached to the tested EPS concrete sample, is analysed. Four blast intensities, generated at the end section of an explosive-driven shock tube (EDST), are used. Impulses are between 7.7 and 16 N.s. A small-scale experimental set-up is developed allowing the measurement of the transmitted impulse to an instrumented free-moving rigid plate. This transmitted impulse is quantified with three independent devices: pressure transducers, a high-speed camera (HSC) and an accelerometer. The experimental results show two distinct behaviour patterns of the EPS concrete: (i) crushing, and (ii) pulverization. The use of a front plate leads to a uniform loading on the front section of the specimen and a gradual crushing of the material. Without the presence of a front plate, the specimen is immediately exposed to the blast wave, leading to a pulverization process which allows an impulse reduction by 50 %. |
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| ISSN: | 2214-5095 |