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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