Visual accumulation tube for size analysis of sands

Journal of the Hydraulics Division of the American Society of Civil Engineers
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Abstract

The visual-accumulation-tube method was developed primarily for making size analyses of the sand fractions of suspended-sediment and bed-material samples. Because the fundamental property governing the motion of a sediment particle in a fluid is believed to be its fall velocity. the analysis is designed to determine the fall-velocity-frequency distribution of the individual particles of the sample. The analysis is based on a stratified sedimentation system in which the sample is introduced at the top of a transparent settling tube containing distilled water. The procedure involves the direct visual tracing of the height of sediment accumulation in a contracted section at the bottom of the tube. A pen records the height on a moving chart. The method is simple and fast, provides a continuous and permanent record, gives highly reproducible results, and accurately determines the fall-velocity characteristics of the sample. The apparatus, procedure, results, and accuracy of the visual-accumulation-tube method for determining the sedimentation-size distribution of sands are presented in this paper.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Visual accumulation tube for size analysis of sands
Series title Journal of the Hydraulics Division of the American Society of Civil Engineers
Volume 82
Issue HY3
Year Published 1956
Language English
Publisher American Society of Civil Engineers
Description Paper 1004; 17 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of the Hydraulics Division of the American Society of Civil Engineers