The uSed System for Soil Particle Size Distribution Determination
Publication: Geo-Congress 2024
ABSTRACT
A new testing system for determining soil particle size distributions (PSDs) is under development. It augments existing systems generically called “SedImaging” by the addition of a water pressure transducer near the bottom of a soil sedimentation column. The original SedImaging test provides image-based PSDs for sands, while the pressure transducer will extend the PSDs into the silt range. The new test system is called the “uSed” reflecting the measurement of water pressures (u) during a SedImaging test. This paper presents the uSed theoretical equations and the results of four pilot tests on sands to verify the theory. The four specimens were coarse sand, medium-sized sand, fine sand, and a gap-graded sand. The observed pressure decay curves were qualitatively as expected and the masses of solids predicted by the uSed theory agreed with the actual specimen masses to within an error of 2%.
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Information
Published In
Geo-Congress 2024
Pages: 136 - 145
History
Published online: Feb 22, 2024
ASCE Technical Topics:
- Analysis (by type)
- Buildings
- Continuum mechanics
- Dynamics (solid mechanics)
- Earth materials
- Engineering fundamentals
- Engineering mechanics
- Existing buildings
- Geomaterials
- Geomechanics
- Geotechnical engineering
- Particle size distribution
- Power spectral density
- Pressure (type)
- Sandy soils
- Soil dynamics
- Soil mechanics
- Soil pressure
- Soil properties
- Soil tests
- Soils (by type)
- Solid mechanics
- Statistical analysis (by type)
- Structural engineering
- Structures (by type)
- Tests (by type)
- Water pressure
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