Stabilization of High Sulfate-Saline Soil with Lime, Ground Granulated Blast Furnace Slag (GGBFS), and Basic Oxygen Furnace Slag (BOFS)

Abstract:

Saline soil is an inferior and special material consisting of fine soil particles and possesses poor engineering properties. The swelling, salt heaving, and corrosive behaviors of this soil render it unsuitable for pavement construction due to its deteriorating effects. To use this soil as a subgrade material in the roadway, this soil needs to meet various engineering standard criteria such as deformation, sulfate reduction, strength, and durability for use as subgrade material. Hence, the soil underwent careful stabilization using designed proportions of chemical additives such as lime and slag-based materials. The paper studied the feasibility of using slag-based materials (by-products of the steelmaking process) such as ground granulated blast furnace slag (GGBFS) and basic oxygen furnace slag (BOFS) with lime in stabilizing sulfate-saline soil. On this premise, four designed mixtures, which include saline soil (control), [soil+6% lime], [soil+4% lime+2% (50% GGBFS+50% BOFS)], and [soil+4%lime+2% (70% GGBFS+30% BOFS)] for use to determine their various geotechnical and durability properties. The experimental program for determining these properties included proctor compaction, unconfined compressive strength, three-dimensional (3-D) swelling, and dielectric constant tests. As a result, the laboratory test findings have revealed that adding GGBFS and BOFS to the lime-treated saline soil decreased the maximum dry density, enhanced the strength parameter, and reduced the soil's volumetric swelling and moisture susceptibility.

• Periodical: Key Engineering Materials (Volume 951)
• Pages: 125-131
• DOI: https://doi.org/10.4028/p-6JocPX
• Online since: August 2023
• Authors: Fatai Omeiza Balogun, Aliya Abzal, Aizhan Kissambinova, Chang Seon Shon*, Jong Ryeol Kim
• Keywords: Chemical Additives, Durability, High Sulfate-Saline Soil, Soil Stabilization, Strength, Swell

References

[1] Moayed, R.Z., E. Izadi, and S. Heidari, Stabilization of saline silty sand using lime and micro silica. Journal of Central South University, 2012. 19(10): pp.3006-3011.

DOI: 10.1007/s11771-012-1370-1

[2] Yang, B., et al., Pavement damage behaviour of urban roads in seasonally frozen saline ground regions. Cold Regions Science and Technology, 2020. 174.

DOI: 10.1016/j.coldregions.2020.103035

[3] Xing, G., et al., Influence of Alkaline Activators on Unconfined Compressive Strength of Saline Soils Stabilised with Ground Granulated Blast Furnace Slags. Advances in Civil Engineering, 2021. 2021: pp.1-13.

DOI: 10.1155/2021/8893106

[4] Ziaie-Moayed, R., M. Samimifar, and M. Kamalzare, Improvement of shear strength characteristics of saline soil using cement and polymer. International Journal of Geotechnical Engineering, 2013. 5(3): pp.307-314.

DOI: 10.3328/ijge.2011.05.03.307-314

[5] Puppala, A.J., N. Intharasombat, and R.K. Vempati, Experimental Studies on Ettringite-Induced Heaving in Soils. Journal of Geotechnical and Geoenvironmental Engineering@ASCE, 2005: pp.325-337.

DOI: 10.1061/(asce)1090-0241(2005)131:3(325)

[6] Firoozi, A.A., et al., Fundamentals of soil stabilization. International Journal of Geo-Engineering, 2017. 8(1).

[7] Kampala, A., et al., An investigation of sulfate effects on compaction characteristics and strength development of cement-treated sulfate bearing clay subgrade. Road Materials and Pavement Design, 2020. 22(10): pp.2396-2409.

DOI: 10.1080/14680629.2020.1753564

[8] Syed, M., A. GuhaRay, and D. Goel, Strength characterisation of fiber reinforced expansive subgrade soil stabilized with alkali activated binder. Road Materials and Pavement Design, 2021. 23(5): pp.1037-1060.

DOI: 10.1080/14680629.2020.1869062

[9] Goodarzi, A.R. and M. Salimi, Stabilization treatment of a dispersive clayey soil using granulated blast furnace slag and basic oxygen furnace slag. Applied Clay Science, 2015. 108: pp.61-69.

DOI: 10.1016/j.clay.2015.02.024

[10] Salimi, M., M. Ilkhani, and A.H. Vakili, Stabilization treatment of Na-montmorillonite with binary mixtures of lime and steelmaking slag. International Journal of Geotechnical Engineering, 2018. 14(3): pp.295-301.

DOI: 10.1080/19386362.2018.1439294

[11] D4318-17, A.S.f.t.a.m.A., Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils. 2018, ASTM International.

[12] D854-14, A.S.f.t.a.m.A., Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer. 2014, ASTM International.

[13] D698-12, A.S.f.t.a.m.A., Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft lbf/ft3 (600 kN-m/m3)). 2015, ASTM International.

DOI: 10.1520/d0698-07e01

[14] Tex-121-E, Tex-121-E_Soil-Lime Testing Eades_Grim Test. 2002, TxDOT DESIGNATION.

[15] D2166/D2166M-16, A.S.f.t.a.m.A., Standard Test Method for Unconfined Compressive Strength of Cohesive Soil. 2016, ASTM International.

[16] Ren, J., et al., The damage mechanism and failure prediction of concrete under wetting–drying cycles with sodium sulfate solution. Construction and Building Materials, 2020. 264.

DOI: 10.1016/j.conbuildmat.2020.120525

[17] Santos, F., et al., Geotechnical Properties of Fly Ash and Soil Mixtures for Use in Highway embankments. World of Coal Ash (WOCA) Conference, Denver, CO, USA, 2011: pp.125-136.

[18] Liu, Y., et al., Experimental investigation of the geotechnical properties and microstructure of lime-stabilized saline soils under freeze-thaw cycling. Cold Regions Science and Technology, 2019. 161: pp.32-42.

DOI: 10.1016/j.coldregions.2019.03.003

[19] Zhu, Y., et al., Unconfined Compressive Strength of Aqueous Polymer-Modified Saline Soil. International Journal of Polymer Science, 2019. 2019: pp.1-11.

DOI: 10.1155/2019/9137069

[20] Mboya, H.A., et al., Measurement of Pozzolanic Activity Index of Scoria, Pumice, and Rice Husk Ash as Potential Supplementary Cementitious Materials for Portland Cement. Advances in Civil Engineering, 2017. 2017: pp.1-13.

DOI: 10.1155/2017/6952645

[21] Shon, C.-S., Y.s. Jung, and D. Saylak, Evaluation of synthetic aggregates using off-ASTM specification ashes as road base course materials. Construction and Building Materials, 2013. 38: pp.508-514.

DOI: 10.1016/j.conbuildmat.2012.08.014

[22] Shon, C.-S., et al., Characterization of Mellowing Process to Control Expansion in High-Sulfate-Bearing Soil. Transportation Research Record: Journal of the Transportation Research Board, 2021. 2676(1): pp.355-364.

DOI: 10.1177/03611981211036345