Effect of sodium silicate and cement on the improvement of engineering properties of organic soil


  • Veronica Gacambi Kiuna Department of Civil Engineering, Erciyes University, Kayseri (Turkey)
  • Zulkuf Kaya Department of Civil Engineering, Erciyes University, Kayseri (Turkey)




Organic soil, sodium silicate, UCS, CBR, cement, hydraulic conductivity.


The study is aimed at evaluating the effect of adding sodium silicate and cement to organic soil. Geotechnical properties of organic soil are determined before and after the addition of the stabilizing materials, which in this case are cement and sodium silicate. The results obtained after treatment were analyzed and evaluated to determine whether the strength values reached are adequate for strong subgrades for pavement, and airports construction. Organic soil samples used in this study were obtained from Kayseri Free Area in Turkey. Index properties and geotechnical properties of organic soil, which was identified as sample P, were determined and this formed the reference upon which strength improvements of each mix design sample were obtained. Optimum moisture content and maximum dry density of the soil and the various mixes were obtained using standard proctor test. Unconfined compressive tests (UCS), California bearing ratio (CBR), and Falling head permeability tests were used to determine geotechnical properties. UCS tests were conducted on air cured samples for 1, 7, and 28 days. Soaked and unsoaked CBR samples were tested after 1, 7 and 28 days. Hydraulic conductivity was determined using the falling head permeability test. From the experiments, sodium silicate and cement were seen to improve the strength of organic soil and provide acceptable subgrade strength and CBR values. CBR and UCS tests indicated that longer curing periods improved strength even more. Higher values were obtained for 7 days cured samples than for 1-day samples with the highest values being obtained for 28 days cured samples. Design mixes with higher cement and sodium silicate compositions gave the highest values of strength. In conclusion, sodium silicate and cement give positive results when it comes to stabilizing organic soil.


Akova, S. B. (2011). Yalova: potential organic agricultural land of Turkey. EchoGéo, (16), 0–19.

Akula, P., Naik, S. R., & Little, D. N. (2021). Evaluating the durability of lime-stabilized soil mixtures using soil mineralogy and computational geochemis-try. Transportation Research Record, 2675(9), 1469–1481.

ASTM 2166. (2013). Standard Test Method for Unconfined Compressive Strength of Cohesive Soil. ASTM International, 04(January).

ASTM D698. (2007). Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort. ASTM International, 3, 15.

Avci, E., Deveci, E., & Gokce, A. (2021). Effect of Sodium Silicate on the Strength and Permeability Properties of Ultrafine Cement Grouted Sands. Jour-nal of Materials in Civil Engineering, 33(8), 04021203.

Binh, V. N., & Quynh, D. T. (2021). Use of Sodium Silicate in Combination with Cement for Improving Peat Soil in Mekong River Delta Vietnam. Interna-tional Journal of Innovative Technology and Exploring Engineering, 10(4), 52–56.

Brendan c. O’Kelly. (2005). Oven-drying characteristics of soils of different origins. 23(January), 1–9.

Chen, H., & Wang, Q. (2006). The behavior of organic matter in the process of soft soil stabilization using cement. Bulletin of Engineering Geology and the Environment, 65, 445-448.

D1883 ASTM. (2005). Standard Test Method for CBR (California Bearing Ratio) of Soils in Place. ASTM International, 04(May).

Degirmenci, N., Okucu, A., & Turabi, A. (2007). Application of phosphogypsum in soil stabilization. Building and Environment, 42(9), 3393–3398.

Dehghanbanadaki, A., Arefnia, A., Keshtkarbanaeemoghadam, A., Ahmad, K., Motamedi, S., & Hashim, R. (2017). Evaluating the compression index of fibrous peat treated with different binders. Bulletin of Engineering Geology and the Environment, 76(2), 575–586.

Diana, W., Hartono, E., & Muntohar, A. S. (2019). The Permeability of Portland Cement-Stabilized Clay Shale. IOP Conference Series: Materials Science and Engineering, 650(1).

ElMouchi, A., Siddiqua, S., Wijewickreme, D., & Polinder, H. (2021). A Review to Develop new Correlations for Geotechnical Properties of Organic Soils. Geotechnical and Geological Engineering, 39(5), 3315–3336.

Firoozi, A. A., Guney Olgun, C., Firoozi, A. A., & Baghini, M. S. (2017). Fundamentals of soil stabilization. International Journal of Geo-Engineering, 8(1).

Ghadir, P., & Ranjbar, N. (2018). Clayey soil stabilization using geopolymer and Portland cement. Construction and Building Materials, 188, 361–371.

Hatfield, J. L., Sauer, T. J., & Prueger, J. H. (2004). Encycloedia of Soils in the Environment (Vol. 4). New York, USA: Academic Press.

Ibrahim, O. A., Cabalar, A. F., & Abdulnafaa, M. D. (2018). Improving some geotechnical properties of an organic soil using crushed waste concrete. The International Journal of Energy & Engineering Sciences, 3(3), 100–112.

Jain, P., Gandhi, J., Trivedi, S., & Shukla, R. P. (2021). Comparison Between Casagrande Method and Cone Penetrometer Method for Determination of Liquid Limit of Soil. Lecture Notes in Civil Engineering, 133 LNCE, 39–48.

Janz, M., & Johansson, S.-E. (2002). The Function of Different Binding Agents in Deep Stabilization: Report 9. Linkoping, Sweden, Report 9(July), 44.

Kalantari, B. (2011). Strength evaluation of air cured; cement treated peat with blast furnace slag. Geomechanics and Engineering, 3(3), 207–218.

Kazemian, S., Prasad, A., Huat, B. B. K., Ghiasi, V., & Ghareh, S. (2012). Effects of Cement-Sodium Silicate System Grout on Tropical Organic Soils. Arabian Journal for Science and Engineering, 37(8), 2137–2148.

Latifi, N., Eisazadeh, A., Marto, A., & Meehan, C. L. (2017). Tropical residual soil stabilization: A powder form material for increasing soil strength. Con-struction and Building Materials, 147, 827–836.

Lewis, D. E., Jared, D. M., Torres, H., & Mathews, M. (2006). Georgia’s use of cement-stabilized reclaimed base in full-depth reclamation. Transportation Research Record, (1952), 125–133Choi, M., Kim, J., & Kim, M. (2006). A study on the price escalation system in a construction contract. KSCE Journal of Civil Engineering, 10(4), 227-232.

Lu, X., Cui, M., Wang, P., & Li, B. (2018). Application in cement soil of stabilizer in silt soft soil of Wuxi in China. Journal of Coastal Research, (83), 316-323.

Ma, C., Zhao, B., Long, G., Sang, X., & Xie, Y. (2018). Quantitative study on strength development of earth-based construction prepared by organic clay and high-efficiency soil stabilizer. Construction and Building Materials, 174, 520–528.

Moayedi, H., Asadi, A., Huat, B. B. K., Moayedi, F., & Kazemian, S. (2011). Enhancing electrokinetic environment to improve physicochemical properties of kaolinite using polyvinyl alcohol and cement stabilizers. International Journal of Electrochemical Science, 6(7), 2526–2540.

Nigussie, E. (2011). Evaluation of Sodium Silicate and Its Combination with Cement/Lime for Soil Stabilization. (October).

Nowak, G., & Kanty, P. (2019). Mass Stabilization as reinforcement of organic soils. E3S Web of Conferences, 97, 1–11.

Pan, C., Xie, X., Gen, J., & Wang, W. (2020). Effect of stabilization/solidification on mechanical and phase characteristics of organic river silt by a stabi-lizer. Construction and Building Materials, 236, 117538.

Parsons, R. L., & Milburn, J. P. (2003). Engineering Behavior of Stabilized Soils. Transportation Research Record, (1837), 20–29.

Prusinski, J. R., & Bhattacharja, S. (1998). Effectiveness of Portland cement and lime in stabilizing clay soils. Transportation Research Record, (1652), 215–227.

Wattez, T., Patapy, C., Frouin, L., Waligora, J., & Cyr, M. (2021). Interactions between alkali-activated ground granulated blast furnace slag and organic matter in soil stabilization/solidification. Transportation Geotechnics, 26(March), 100412.

Xu, J., Morris, P. J., Liu, J., & Holden, J. (2018). PEATMAP: Refining estimates of global peatland distribution based on a meta-analysis. Catena, 160(September), 134–140.

Zhang, J., Little, D. N., Grajales, J., You, T., & Kim, Y. R. (2017). Use of Semicircular Bending Test and Cohesive Zone Modeling to Evaluate Fracture Resistance of Stabilized Soils. Transportation Research Record, 2657(1), 67–77.

Zhu, M., Zhang, Q., Zhang, X., & Hui, B. (2018). Comparative Study of Soil Grouting with Cement Slurry and Cement-Sodium Silicate Slurry. Advances in Materials Science and Engineering, 2018.Darvish, M., Yasaei, M., & Saeedi, A. (2009). Application of the graph theory and matrix methods to con-tractor ranking. International Journal of Project Management, 27(6), 610-619.




How to Cite

Kiuna, V. G., & Kaya, Z. (2023). Effect of sodium silicate and cement on the improvement of engineering properties of organic soil. Revista De La Construcción. Journal of Construction, 22(3), 632–645. https://doi.org/10.7764/RDLC.22.3.632