Compressibility of a Compacted Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 126, Issue 3
Abstract
A slightly silty quartz sand (nonplastic fines) was compacted according to Modified Proctor at different water contents and then one-dimensionally compressed. Samples compacted dry-of-optimum were found to be stiffer than samples compacted wet-of-optimum at the same relative compaction. This difference in stress-strain behavior is not generally expected for a sand; fabric and/or overconsolidation may explain these results. Regardless of the mechanism, the actual measured modulus on sand backfill at low confining stresses can be significantly less than handbook values. Thus, for the case of shallow depth (such as backfill for a flexible conduit located within a few meters of the ground surface) it is important to consider the water content and the method of compaction, as the degree of compaction by itself will not necessarily achieve the desired modulus.
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Information & Authors
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 126 • Issue 3 • March 2000
Pages: 273 - 275
History
Received: Jan 14, 1999
Published online: Mar 1, 2000
Published in print: Mar 2000
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