Journal Published Online: 01 December 1997
Volume 20, Issue 4

Grain-Size Analysis by Buoyancy Method



A new routine experiment referred to as buoyancy analysis is proposed to determine the grain-size distribution of fine-grained soils. The buoyancy analysis is based on the sedimentation principles of the hydrometer and pipette analyses. It determines the percent by weight finer than a given grain size by measuring the buoyant weight of a 2.5-cm-diameter sphere immersed in the soil suspension. The buoyancy analysis is slightly more accurate than the hydrometer analysis, has a shorter duration, and its readings can be fed directly into a computer. It yields results identical to those of the hydrometer analysis when the sphere is immersed within the depth range of the hydrometer bulb.

Author Information

Bardet, J-P
University of Southern California, Los Angeles, CA
Young, J
University of Southern California, Los Angeles, CA
Pages: 5
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: GTJ10414J
ISSN: 0149-6115
DOI: 10.1520/GTJ10414J