Effect of thermal stabilization of soil, bentonite, calcium carbonate and fibers on behavior properties of clay soil

Document Type: Original Article


1 Department of civil Engineering, Bahonar university, Kerman, Iran.

2 Department of civil Engineering, Beijing University Of Civil Engineering And Architecture, Beijing, China.


Various factors including the thermal stabilization and the presence of chemicals such as bentonite for the protection of nuclear waste lead to the exposure of clay soil to the heat. Besides, the presence of large amounts of carbonate as one of the main components of clay soils, especially in the arid and semi-arid regions, and its effect on the soil engineering properties emphasize the necessity to study the combined effect of heat and carbonate on the engineering behavior of clay soils. Accordingly, the present paper studies the interaction of clay-bentonite, clay-lime, and clay-fiber at high temperatures and its effect on the properties of clay soils. In this regard, a series of macro-structural experiments is conducted. The different thermal levels considered in the present study according to the previous research are 0 to 900. The soil behavior is investigated using the numerical and laboratory methods. The experiments conducted in this area include the weight changes and the unconfined compressive strength of the soil. The effect of using the bentonite and fiber on the strength indicates that at a given temperature, increasing the percentage of bentonite leads to the increased strength. In addition, the rate of increase is different at different temperatures, so that the highest increase occurs for the addition of 30% bentonite to the soil, reaching the unconfined compressive strength to 1.88 times the control sample. However, adding 0.5% fiber and 4% lime shows the maximum strength.


1. Patel A. Geotechnical Investigations and Improvement of Ground Conditions. Woodhead Publishing; 2019 Feb 7. [View at Google Scholar] ; [View at Publisher].

2. Piña J, Merino J, Errazu AF, Bucalá V. Thermal treatment of soils contaminated with gas oil: influence of soil composition and treatment temperature. Journal of hazardous materials. 2002 Oct 14;94(3):273-90.[View at Google Scholar] ; [View at Publisher].

3. Heron G, Carroll S, Nielsen SG. Full‐scale removal of DNAPL constituents using steam‐enhanced extraction and electrical resistance heating. Groundwater Monitoring & Remediation. 2005 Nov;25(4):92-107. [View at Google Scholar] ; [View at Publisher].

4. O'Brien PL, DeSutter TM, Casey FX, Khan E, Wick AF. Thermal remediation alters soil properties–a review. Journal of environmental management. 2018 Jan 15;206:826-35. [View at Google Scholar] ; [View at Publisher].

5. Tzovolou, D. N., Aggelopoulos, C. A., Theodoropoulou, M. A., & Tsakiroglou, C. D. (2011). Remediation of the unsaturated zone of NAPL-polluted low permeability soils with steam injection: an experimental study. Journal of soils and sediments, 11(1), 72-81. [View at Google Scholar] ; [View at Publisher].

6. FRTR (Federal Remediation Technologies Roundtable), Remediation Technologies Screening Matrix and Reference Guide, Version 4.0. https://frtr.gov/ matrix2/section1/toc.html. (Accessed 28 June 2017. [View at Publisher].

7. O’Brien PL, DeSutter TM, Ritter SS, Casey FX, Wick AF, Khan E, Matthees HL. A large-scale soil-mixing process for reclamation of heavily disturbed soils. Ecological engineering. 2017 Dec 1;109:84-91.[View at Google Scholar] ; [View at Publisher].

8. Ikeagwuani CC, Nwonu DC. Emerging trends in expansive soil stabilisation: A review. Journal of Rock Mechanics and Geotechnical Engineering. 2019 Apr 1;11(2):423-40. [View at Google Scholar] ; [View at Publisher].

9. Abu-Zreig MM, Al-Akhras NM, Attom MF. Influence of heat treatment on the behavior of clayey soils. Applied Clay Science. 2001 Nov 1;20(3):129-35. [View at Google Scholar] ; [View at Publisher].

10. Blázquez, C. S., Martín, A. F., Nieto, I. M., García, P. C., Pérez, L. S. S., & Aguilera, D. G. (2017). Thermal conductivity map of the Avila region (Spain) based on thermal conductivity measurements of different rock and soil samples. Geothermics, 65, 60-71. [View at Google Scholar] ; [View at Publisher].

11. Cruz AL, Cook RL, Lomnicki SM, Dellinger B. Effect of low temperature thermal treatment on soils contaminated with pentachlorophenol and environmentally persistent free radicals. Environmental science & technology. 2012 May 11;46(11):5971-8. [View at Google Scholar] ; [View at Publisher].

12. Živica V, Palou M. Influence of heat treatment on the pore structure of some clays-precursors for geopolymer synthesis. Procedia Engineering. 2016 Jan 1;151:141-8. [View at Google Scholar] ; [View at Publisher].

13. Mohammed S, Elhem G, Mekki B. Valorization of pozzolanicity of Algerian clay: optimization of the heat treatment and mechanical characteristics of the involved cement mortars. Applied Clay Science. 2016 Nov 1;132:711-21. [View at Google Scholar] ; [View at Publisher].

14. Tironi A, Trezza MA, Irassar EF, Scian AN. Thermal treatment of kaolin: effect on the pozzolanic activity. Procedia Materials Science. 2012 Jan 1;1:343-50. [View at Google Scholar] ; [View at Publisher].

15. Firoozi AA, Taha MR, Firoozi AA, Khan TA. Evaluation of Physical Properties of Clays Mixed with Silica Sand (Penilaian Ciri-ciri Fizikal Tanah Liat Dicampur Pasir Silika). Jurnal Kejuruteraan (Journal of Engineering). 2014 Dec 31;26:77-82. [View at Google Scholar] ; [View at Publisher].

16. Wong LS, Hashim R, Ali F. Improved strength and reduced permeability of stabilized peat: focus on application of kaolin as a pozzolanic additive. Construction and Building Materials. 2013 Mar 1;40:783-92. [View at Google Scholar] ; [View at Publisher].

17. Baldovino JA, Moreira EB, Teixeira W, Izzo RL, Rose JL. Effects of lime addition on geotechnical properties of sedimentary soil in Curitiba, Brazil. Journal of Rock Mechanics and Geotechnical Engineering. 2018 Feb 1;10(1):188-94. [View at Google Scholar] ; [View at Publisher].

18. Kawasaki S, Akiyama M. Enhancement of unconfined compressive strength of sand test pieces cemented with calcium phosphate compound by addition of various powders. Soils and Foundations. 2013 Dec 1;53(6):966-76. [View at Google Scholar] ; [View at Publisher].

19. al-Swaidani A, Hammoud I, Meziab A. Effect of adding natural pozzolana on geotechnical properties of lime-stabilized clayey soil. Journal of Rock Mechanics and Geotechnical Engineering. 2016 Oct 1;8(5):714-25. [View at Google Scholar] ; [View at Publisher].

20. Ayeldeen M, Kitazume M. Using fiber and liquid polymer to improve the behaviour of cement-stabilized soft clay. Geotextiles and Geomembranes. 2017 Dec 1;45(6):592-602. [View at Google Scholar] ; [View at Publisher].

21. Bekhiti M, Trouzine H, Rabehi M. Influence of waste tire rubber fibers on swelling behavior, unconfined compressive strength and ductility of cement stabilized bentonite clay soil. Construction and Building Materials. 2019 May 30;208:304-13. [View at Google Scholar] ; [View at Publisher].

22. Ghazavi M, Roustaie M. The influence of freeze–thaw cycles on the unconfined compressive strength of fiber-reinforced clay. Cold regions science and technology. 2010 May 1;61(2-3):125-31. [View at Google Scholar] ; [View at Publisher].

23. Iravanian A, Bilsel H. Tensile Strength Properties of Sand-bentonite Mixtures Enhanced with Cement. Procedia engineering. 2016 Jan 1;143:111-8. [View at Google Scholar] ; [View at Publisher].

24. Elmashad ME. Improving the geotechnical behavior of sand through cohesive admixtures. Water Science. 2018 Apr 1;32(1):67-78. [View at Google Scholar] ; [View at Publisher].

25. Khotbehsara MM, Miyandehi BM, Naseri F, Ozbakkaloglu T, Jafari F, Mohseni E. Effect of SnO2, ZrO2, and CaCO3 nanoparticles on water transport and durability properties of self-compacting mortar containing fly ash: Experimental observations and ANFIS predictions. Construction and Building Materials. 2018 Jan 15;158:823-34. [View at Google Scholar] ; [View at Publisher].

26. Ghanei A, Jafari F, Khotbehsara MM, Mohseni E, Tang W, Cui H. Effect of nano-CuO on engineering and microstructure properties of fibre-reinforced mortars incorporating metakaolin: Experimental and numerical studies. Materials. 2017;10(10):1215. [View at Google Scholar] ; [View at Publisher].

27. Badarloo B, Jafari F. A Numerical Study on the Effect of Position and Number of Openings on the Performance of Composite Steel Shear Walls. Buildings. 2018 Sep;8(9):121. [View at Google Scholar] ; [View at Publisher].

28. Naseri F, Jafari F, Mohseni E, Tang W, Feizbakhsh A, Khatibinia M. Experimental observations and SVM-based prediction of properties of polypropylene fibres reinforced self-compacting composites incorporating nano-CuO. Construction and Building Materials. 2017 Jul 15;143:589-98. [View at Google Scholar] ; [View at Publisher].