Japanese Geotechnical Society Special Publication
Online ISSN : 2188-8027
ISSN-L : 2188-8027
1. Characterization - Ground investigation
An attempting research on evaluating grain-size characteristics based on acoustic properties of soil for liquefaction assessment by Swedish Ram Sounding
Suguru YamadaAkihiko Oshima
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2016 Volume 2 Issue 7 Pages 321-326

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Abstract

In order to achieve the economical assessment of liquefaction safeness for an individual residential property by Swedish Ram Sounding (SRS), an attempting research on evaluating the grain-size properties of strata employing acoustic properties of soils was carried out. The sounds generated by friction between soils and stainless-steel metal during direct shear testing and SRS were recorded. And then, their acoustic properties were compared with grain size properties of soils. As results of examination on their relationships, the possibility was discovered that that the fines content, Fc, at certain stratum and presence or non-presence of plasticity of fines would be able to estimate based on the spectrum shape of frictional sound. The trends were also observed that the frictional sound of soils without plastic fines has narrow spectrum width and its peak frequency might be affected by particle size.

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