• Proceedings of the Korean Geotechical Society Conference
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• 2005.03a
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• pp.1005-1012
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• 2005

Shell-sand mixtures are commonly used for reclamation projects. This study presented the engineering properties of shell-sand mixtures. Shell shows higher specific gravities and less compressibilities than quartz sand. From large shear box tests, it can be seen that the shear strength increased with the increase of shell mixtures. At 30% shell mixtures showed about 6 increase in shear friction angle.

• Journal of the Korean Geotechnical Society
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• v.20 no.9
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• pp.17-23
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• 2004

Strength and deformation characteristics of oyster shell-sand mixtures were investigated to utilize waste oyster shell being treated as a waste material. Standard penetration test (SPT) is a common method to obtain in-situ strength in sand. However, in case of oyster shell-sand mixtures, there was no information between SPT N-value and internal friction angle of mixture soils. In this paper SPT experiments from several large scaled model chamber tests and large scaled direct shear tests were carried out with varying unit weight of oyster shell-sand mixtures. Appropriate correlations were in tile study observed among N-value, unit weight and internal friction angle, which make it possible to estimate in-situ strength from SPT and the coefficient of volume compressibility from the confined compression tests to compute the settlement of oyster shell-sand mixtures.