Study on the consolidation properties of soft soil distributed in the North Center coastal area of Vietnam

  • Affiliations:

    1 Faculty of Geoscience and Geoengineering, Hanoi University of Mining and Geology, Viet Nam 2 Faculty of Civil Engineering, Hanoi University of Mining and Geology, Viet Nam

  • *Corresponding:
    This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Received: 15th-Sept-2020
  • Revised: 19th-Nov-2020
  • Accepted: 31st-Dec-2020
  • Online: 31st-Dec-2020
Pages: 116 - 122
Views: 2261
Downloads: 585
Rating: 1.0, Total rating: 58
Yours rating

Abstract:

Consolidation parameters of soft soil play an important role in calculating settlement and soft soil improvement by vertical drainage method (distance, quantity, treatment time). In this study, using oedometer tests, consolidation parameters of some soft soils in the North Central coastal region, Vietnam are clarified. The research results show that the compression index Cc has a strong relationship with the natural water content, liquid limit, dry unit weight, and void ratio of the soil. The consolidation coefficient significantly depends on the applied pressure level, at the over-consolidation stage (normal stress is less than pre-consolidation pressure), the consolidation coefficient is high. By contrast, at the normal consolidation stage (normal stress is greater than pre-consolidation pressure), the coefficient of consolidation is small. The pre-consolidation pressure of soil changes with the distribution depth.

How to Cite
Bui, S.Truong, Nguyen, N.Thi, Pham, T.Duc and Nguyen, D.Thanh 2020. Study on the consolidation properties of soft soil distributed in the North Center coastal area of Vietnam (in Vietnamese). Journal of Mining and Earth Sciences. 61, 6 (Dec, 2020), 116-122. DOI:https://doi.org/10.46326/JMES.HTCS2020.16.
References

Al-khafaji, A. W., Maillacheruvu, K. Y., Sainz, M., Neuman, R., (2015). Analysis of empirical compression index equations using the liquid limit. Implementing Innovative Ideas in Structural Engineering and Project Management.

Bo, M.W, Arulrajah, A., Sukmak, P., Horpibulsuk, S. (2015).  Mineralogy and geotechnical properties of Singapore marine clay at Changi. Soils and Foundations.55(3):600-613.

Bo, M.W, Choa, V., Chu, J., Arulrajah, A., Horpibulsuk, S. (2017). Laboratory Investigation on the Compressibility of Singapore Marine Clays. Marine Georesources and Geotechnology. Vol.35 (6).

Chu, J., Bo, M.W., Chang, M. F., and Choa,V., (2002). Consolidation and permeability properties of Singapore marine clay. Journal of Geotechnical and Geoenvironmental Engineering, Vol 128 (9), 724-732.

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

Larsson, R. (1986). Consolidation of soft soil, Swedish Geotechnical Institute, Linkiiping, Report No.29.

Jain, V.K., Dixit, M., Chitra, Dr. R. (2015). Correlation of Plasticity Index and Compression Index of Soil. International Journal of Innovations in Engineering and Technology (IJIET). Volume 5 Issue 3 June 2015. 263-270.

Nguyễn Thị Nụ, Đỗ Minh Toàn, Nguyễn Viết Tình (2011). Nghiên cứu xác định các thông số cố kết của đất sét (CL, CH) yếu amQ22-3 ở Sóc Trăng phục vụ cho việc tính lún và thiết kế xử lý nền đất yếu bằng các thiết bị tiêu thoát nước thẳng đứng. Tạp chí khoa học kỹ thuật Mỏ - Địa chất, 35/07/2011,tr 32-39.

Nguyễn Thị Nụ (2014). Nghiên cứu đặc tính địa chất công trình của đất loại sét yếu amQ22-3 phân bố ở các tỉnh ven biển đồng bằng sông Cửu Long phục vụ xử lý nền đường. Luận án tiến sĩ địa chất, Hà Nội.

Nguyễn Thị Nụ, Bùi Trường Sơn, Lê Tiến Dũng (2020). Khả năng xử lý nền đất yếu đê chắn sóng cảng Chân Mây bằng phương pháp thay thế sử dụng đá mi. Tạp chí khoa học kỹ thuật Mỏ - Địa chất, 61 (4),tr 75-85.

Nu, N.T and Thinh, P.T (2020). Soft soils in the Me Kong Delta of Vietnam. ActuAlscience. 4(1):24-31.

Other articles