Cover
Vol. 23 No. 1 (2023)

Published: July 31, 2023

Pages: 7-13

Original Article

Improving of the Subgrade Soil using Chemical Additives

Abbas Ayad Khudhair 1 Hussein Shaia 1 Haider Habeeb Aodah 1
1 Department of Civil Engineering, College of Engineering, University of Thi-Qar, Thi-Qar, Iraq
History
  • Received: September 13, 2022
  • Revised: October 13, 2022
  • Accepted: October 21, 2022
  • Available Online: July 2, 2023
DOI

https://doi.org/10.33971/bjes.23.1.2

Abstract

Chemical additives were used in this research to improve the properties of the road subgrade layer. Cement, lime, and ferric chloride were used. Laboratory tests such as unconfined compressive strength, consistency limits, and wheel truck test were conducted. The results showed that adding these chemicals to the soil increases the ability of the soil to work, its resistance, and its durability. The optimum percentage of chemical additives that is suitable for the addition to the soil of Al-Nasiriya city were 9 %, 10 %, and 2 % corresponding to cement, lime, and ferric chloride, respectively. According to the unconfined compressive strength test and with increase curing period, which gave good results in improving the strength of the soil. As for the consistency limits, all additives reduced the liquid limit and plasticity index and increased the plastic limit, according to the wheel track test, at 10,000 passes the Rutting depth was 32 mm for natural soil, also the depths were (14, 19, and 17 mm) with chemical additives, respectively.

Keywords

References

  1. S. Z. S. Zaliha, H. Kamarudin, A. M. M. Al Bakri, M. Binhussain, and M. S. S. Salwa, “Review on Soil Stabilization Techniques”, Australian Journal of Basic and Applied Sciences, Vol. 7, No. 5, pp. 258-265, 2013.
  2. B. D. Nath, K. A. Molla, and G. Sarkar, “Study on Strength Behavior of Organic Soil Stabilized with Fly Ash”, Hindawi, International Scholarly Research Notices, Vol. 2017, Article ID 5786541, pp. 1-6, 2017.
  3. T. M. Petry and D. N. Little, “Review of Stabilization of Clays and Expansive Soils in Pavements and Lightly Loaded Structures-History, Practice, and Future”, Journal of Materials in Civil Engineering, Vol. 14, Issue 6, pp. 447460, 2002.
  4. A. S. Budge and M. J. Burdorf, “Subgrade Stabilization ME Properties Evaluation and Implementation”, Minnesota Department of Transportation Research, Services Section, 2012.
  5. B. B. K. Huat, S. Maail and T. A. Mohamed, “Effect of Chemical Admixtures on the Engineering Properties of Tropical Peat Soils”, American Journal of Applied Sciences, Vol. 2, Issue 7, pp. 1113-1120, 2005.
  6. B. W. Meade and D. L. Allen, “Evaluation of Lime Stabilized Subgrade (AA-19)”, Kentucky Transportation Center, College of Engineering, University of Kentucky, Lexington, Kentucky, Research Report KTC-93-25, 1993. http://dx.doi.org/10.13023/KTC.RR.1993.25
  7. P. József, P. Péter, M. Gergely, K. Balázs, and K. Miklós, “Evaluation of the Effect of Lime-Stabilized Subgrade on the Performance of an Experimental Road Pavement”, Croatian Journal of Forest Engineering, Vol. 36, Issue 2, pp. 269-282, 2015.
  8. A. Pandey and A. Rabbani, “Soil Stabilisation using Cement”, International Journal of Civil Engineering and Technology (IJCIET), Vol. 8, Issue 6, pp. 316-322, 2017.
  9. D. Barbero, L. Serraiocco, A. Maroni and S. Peyrot, “Portland Cement for A-4 Group Soils Stabilization”, Journal of Geotechnical Engineering, Vol. 8, Issue 1, pp. 2394-1987, 2021. https://doi.org/10.37591/JoGE
  10. M. Jandial and S. Gupta, “Soil Stabilization by using fly ash and Ferric Chloride”, International Journal of Innovative Technology and Exploring Engineering (IJITEE), Vol. 9, Issue 8, pp. 976-981, 2020.
  11. B. Kiran, C. Shivanarayana, and D. S. V. Prasad, “Stabilization of Marine Clay Using Ferric Chloride and Quarry Dust”, International Journal of Engineering Research and Development, Vol. 12, Issue 3, pp. 1-09, 2016.
  12. ASTM International D854-14, “Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer”, 2020.
  13. ASTM International D4643, “Standard Test Method for Determination of Water (Moisture) Content of Soil by the Microwave Oven Heating”, 2000.
  14. ASTM International D4318-00, “Standards for Liquid Limit, Plastic Limit, and Plasticity Index of Soils”, 2000.
  15. ASTM International D698-12, “Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft 3 (600 kN-m/m 3 ))”, 2003.
  16. ASTM International D2166-16, “Standard Test Method for Unconfined Compressive Strength of Cohesive Soil”, 2016.
  17. ASTM International D422, “Standard Test Method for Particle-Size Analysis of Soils”, 2007.
  18. PCA, “Soil Cement Laboratory Handbook”, Portland Cement Association, 1992.
  19. “Soil Stabilization with Portland Cement”, National Academy of Sciences, National Research Council, 1961.
  20. UFC 3-250-01, “Unified Facilities Criteria (UFC) Soil Stabilization for Pavements”, Pavement Design for Roads, Streets, Walks, and Open Storage Areas, 2011.
  21. J. P. Guyer, “An Introduction to Soil Stabilization with Portland Cement”, Continuing Education and Development, Inc., 2017.
  22. D. of P. and S. Commission of Roads and Bridges (SCRB/R6F), General Specification for Roads and Bridges, Republic of Iraq, Ministry of Housing and Construction, Baghdad. 2003.
  23. L. S Subramanyam, Y. S. G. G. Babu, D. S. V. Prasad and G. V. R. P. Raju, “Influence of Ferric Chloride on Strength and Deformation Characteristics of Expansive Soil Sub Grades in Konaseema Region”, International Journal of Innovative Research in Science, Engineering and Technology, Vol. 4, Issue 11, pp. 11174-11181, 2015.
  24. B. Mishra and R. S. Mishra, “A Study on Stabilization of Black Cotton Soil by use of Fly Ash, Ferric Chloride and Stone Dust”, Vol. 5, Issue 10, pp. 20-25, 2015.
  25. V. R. Bharambe and G. K. Patil, “A Study on Stabilization of Black Cotton Soil using Ferric Chloride”, IOSR Journal of Mechanical and Civil Engineering (IOSRJMCE), Vol. 10, Issue 1, pp. 26-30, 2013.
  26. D. K Rao, M. Anusha, and P. R. T. Pranav, “Effect of Ferric Chloride and Rice Husk Ash in the Stabilization of Soil for the Pavement Subgrades”, International Journal of Engineering Science and Advanced Technology, Vol. 2, Issue 2, pp. 146-153, 2012.
  27. Mallika and B. Ganesh, “Study on Effect of Chemical Stabilizing Agents on Strength and Swelling Properties of Soils”, International Journal of Engineering Technology Science and Research, Vol. 4, Issue 10, pp. 480-498, 2017.