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Effect of leaching on shear strength of marine clay in Can Gio


Author - Affiliation:
Do Thanh Hai - Soil Mechanics and Foundation Department, Faculty of Civil Engineering, Ho Chi Minh City University of Technology , Vietnam
Huynh Tan Phat - Master Student, Faculty of Civil Engineering, Ho Chi Minh City University of Technology , Vietnam
Vo Duy Phuoc - Master Student, Faculty of Civil Engineering, Ho Chi Minh City University of Technology , Vietnam
Le Hoang Phuong - Master Student, Faculty of Civil Engineering, Ho Chi Minh City University of Technology , Vietnam
Corresponding author: Do Thanh Hai - kim.npt@ou.edu.vn

Abstract
Effect of leaching on shear strength of marine clay at Can Gio, Ho Chi Minh City is investigated in laboratory tests. Soil specimens were collected from three sites with different soil salinity. Testing includes shear strength and initial soil salinity. Leaching process is performed by modified equipment in laboratory with fresh water, then specimen is subjected to direct shear test to determine shear strength of leached and unleached soil. It is indicated that leaching affects the shear strength as reducing cohesion value (c, kPa) from 30% – 70% and internal friction angle (φ,o) from 8% - 20%.

Keywords
Salinity; cohesion; internal friction angle

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References

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Yun-Tae Kim and Thanh-Hai Do (2011). Experimental evaluation of leaching effect on the compressibility of marine clay and its strain rate dependency. Marine Georesources & Geotechnology, 29, pp. 1-14.



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