The effects of salt contents on the geotechnical properties of some soft soils in the coastal area of Vietnam

https://tapchi.humg.edu.vn/en/archives?article=1216
  • Affiliations:

    Faculty of Geosciences and Geoengineering, University of Mining and Geology, Vietnam,

  • *Corresponding:
    This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Received: 23rd-Aug-2019
  • Revised: 26th-Sept-2019
  • Accepted: 30th-Dec-2019
  • Online: 30th-Dec-2019
Pages: 51 - 60
Views: 2175
Downloads: 840
Rating: 1.0, Total rating: 83
Yours rating

Abstract:

Soft soil is widely distributed in Vietnam, especially along with the coastal areas. Some geotechnical properties of soft soil can be affected by seawater intrusion due to climate change and sea-level rise. However, the research on the effect of seawater on geotechnical properties of soft soil in coastal areas of Vietnam is still limited. In this study, the effects of salt solutions with different seawater proportions on some geotechnical properties of soft soil distributed in some areas from Mong Cai to Thanh Hoa province have been extensively investigated. The undisturbed soil samples were soaked into different salt solutions for ten days before testing. The research results show that the increase in seawater proportions causes an increase in salt content in the soil. Regarding some geotechnical properties, the compression index, and vertical coefficient of consolidation increase while the Atterberg limits and the undrained shear strength of the soil decrease as the salt contents in soil increase.

How to Cite
Nguyen, N.Thi, Nguyen, D.Thanh and Nguyen, P.Van 2019. The effects of salt contents on the geotechnical properties of some soft soils in the coastal area of Vietnam. Journal of Mining and Earth Sciences. 60, 6 (Dec, 2019), 51-60. .
References

Alawaji, H. A., 1999. Swell and compressibility characteristics of sand-bentonite mixtures inundated with liquids. Applied clay science 15, 411-430

Arasan, S., 2008. Effect of Inorganic salt solutions on the consistence limits of two clays. Turkish J. Eng. Env. Sci. 32, 107-115

Di Maio, C., Santoli, L., Schiavone, P., 2004. Volume change behavior of clays: the influence of mineral composition, pore fluid composition and stress state. Mechanics of Materials 36, 435–451.

Dutta, J., Mishra, A.K., 2016. Consolidation behaviour bentonites in presence of salt solutions. Applied Clay Science, 120, 61-69.

Giao, P.H., Hien, D.H.,2007. Geotechnical characterization of soft clay along a highway in the Red River Delta. J Lowl Technol Int 9, 18–27.

Horpibulsuk, S., Yangsukkasaem, N., Chinkulkijniwat, A. & Du, J, Y., 2011. Compressibility and permeability of Bangkok clay compared with kaolinite and bentonite. Applied Clay Science 52,150-159.

Hunsain, A.A.,1999. Swell and compressibility characteristics of san – bentonite mixtures inundated with liquids. Applied Clay Science, 15, 411-430.

Irish Aid, 2017., Vietnam climate action report for 2016, Resilience and Economic Inclusion Team. https://www.irishaid.ie/media/irishaid/allwebsitemedia/30whatwedo/climatechange/Vietnam-Country-Climate-Action-Reports-2016.pdf

Mishra, A.K, Ohtsubo, M., LI, L., and Higashi, T.,2005. Effect of salt concentrations on the permeability and compressibility of soil – bentonite mixtures. J.Fac. Agr., Kyushu univ.50 (2), 837-849.

Mishra, A.K, Ohtsubo, M., LI, L., and Higashi, T.,2006. Effect of salt concentrations on the hydraulic conductivity mixtures of Basalt soil and various bentonites. J.Fac. Agr., Kyushu univ. 51 (1), 37-43.

Mishra A.K, Ohtsubo, M., LI, L., and Higashi, T., Park, J.,2009. Effect of salt of various concentrations on liquid limit, and hydraulic conductivity of different soil – bentonits mixtures. Environ Geol (2009) 54,1145-1153.

MONRE , 2012., Climate change, sea level rise scenarios for Vietnam, Hanoi.

Naeini, S. A., Jahanfar, M. A.,2011. Effect of salt solution and plasticity index on undrained shear strength of clays. International Journal of Materials and Metallurgical Engineering 5(1), 92-96.

Nguyen Thi Nu, Do Minh Toan, Thinh Phi Hong, Bui Truong Son, 2020. Determination of Particles and Minerals Content in Soft Clay Soil of the Mekong Delta Coastal Provinces, Southern Vietnam for Inorganic Adhesives Stabilization. Determination of Particles and Minerals Content in Soft Clay Soil of the Mekong Delta Coastal Provinces, Southern Vietnam for Inorganic Adhesives Stabilization. Iraqi Journal of Science 61(4), 791-804.

Nguyen Thi Nu and Phi Hong Thinh, 2020. Soft soils in the Me Kong Delta of Vietnam. ActuAlscience 4(1), 24-31.

Ören, A.H., Yükselen, Y., Kaya, A., 2004. The impact of pore fluid chemistry on geotechnical index properties of the Turkish clays. Proc. of International Symposium on Engineering Practice and Performance of Soft Deposits, Osaka, Japan.

Ören, A.H., Kaya, A., 2003. Some engineering aspects of homoionized mixed clay minerals. Environmental Monitoring and Assessment 84, 85–98.

Quang, N.D., Giao, P.H.,2014. Improvement of soft clay at a site in the Mekong Delta by vacuum preloading. Geomechanics and Engineering 6, 419–436.

Phuc, T.T., Giao, P.H., 2020. Geotechnical Properties of Hai Phong and Ninh Binh Clays in the Red River Delta, Geotechnics for Sustainable Infrastructure Development. Springer, 751–758.

Studds, P.G, Stewart, D.I, and Cousens, T.W. The effects of salt solutions on the properties of bentonite – sand mixtures. Clay Minerals, 33, 651-660.

Sridharan, A., and Rao, G. V.,1975. Mechanisms controlling the liquid of clays. A Reprint from Proceedings, Istanbul Conf. on SM and F.E.,1, 75-84.

Sridharan, A., Rao, G. V. & Murthy, N. S., 1988. Liquid limit of kaolinitic soils. Geotechnique 38, 191-198.

Sridharan, A., El-Shafei, A. & Miura, N., 2000. A study on the dominating mechanisms and parameters influencing the physical properties of Ariake clay. International Association of Lowland Technology Journal 2, 55-70.

Truc, N. N., Mihova, L., Mukunoki, T., & Do, D. M., 2019. Effect of saline intrusion on the properties of cohesive soils in the Red River Delta, Vietnam. Marine Georesources & Geotechnology, 1–17.

Yukselen-Aksoy, Y., A. Kaya, and A. H. Ören, 2008. Seawater effect on consistency limits and compressibility characteristics of clays. Engineering Geology 102, 54–61.

Other articles