Determination of the Attenuation Factor of Sand Using a Vertical Shock Tube
Publication: Geo-Congress 2023
ABSTRACT
The vibrations induced in the ground due to the propagation of high amplitude pressure waves generated during blasts pose a serious danger to structures on the ground and underground. In this paper, we explore the attenuation behaviour of sand subjected to blast waves generated in a vertical shock tube driven by compressed helium gas. Peak pressure, decay time, and impulse of the blast wave profile have been used to compare different blast profiles generated in the laboratory. Pressure sensors are embedded at a number of locations in the test section to note the pressure profiles in the air and sand column. In order to study the effect of compaction on attenuation, sand compacted at different relative densities is subjected to blast waves of various overpressures, and the attenuation factor is estimated. This study shows that shock tubes can be effectively used to understand the behaviour of attenuation characteristics of sand under blast loads.
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REFERENCES
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Information & Authors
Information
Published In
Geo-Congress 2023
Pages: 21 - 28
History
Published online: Mar 23, 2023
ASCE Technical Topics:
- Blasting effects
- Compacted soils
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering mechanics
- Fluid mechanics
- Geomechanics
- Geotechnical engineering
- Hydrologic engineering
- Hydrology
- Pressure (type)
- Sand (hydraulic)
- Soil dynamics
- Soil mechanics
- Soil pressure
- Soil properties
- Soils (by type)
- Solid mechanics
- Structural dynamics
- Water and water resources
- Wave attenuation
- Wave generation
- Wave pressure
- Waves (fluid mechanics)
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