Research ArticleOpen AccessGoogle Scholar indexed
Stabilization of Expansive Soil byUsing Lime
School of Civil Engineering, College of Engineering, Sudan University of Science and Technology, Khartoum, Sudan
School of Civil Engineering, College of Engineering, Sudan University of Science and Technology, Khartoum, Sudan
College of Civil and Transportation Engineering, Hohai University, Nanjing, China
School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, China
College of Civil and Transportation Engineering, Hohai University, Nanjing, China
- 1 School of Civil Engineering, College of Engineering, Sudan University of Science and Technology, Khartoum, Sudan
- 2 School of Civil Engineering, College of Engineering, Sudan University of Science and Technology, Khartoum, Sudan
- 3 College of Civil and Transportation Engineering, Hohai University, Nanjing, China
- 4 School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- 5 College of Civil and Transportation Engineering, Hohai University, Nanjing, China
Open Journal of Civil Engineering·Volume 15 (2025)·Pages 621–632·Published 30 September 2025·DOI10.4236/ojce.2025.154033
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Abstract
Expansive soils in Sudan pose significant challenges to infrastructure due to volumetric changes with moisture fluctuations. This study investigates the effect of adding quick lime (4%, 6%, and 8%) on stabilizing expansive soil from Shambat, Khartoum State. Laboratory tests showed that the addition of lime led to a substantial reduction in the plasticity index, from 35.97% to 14.63%, and a remarkable increase in the California Bearing Ratio (CBR) value, from 1.7% to 50.7%. This indicates significantly enhanced soil strength. These results suggest that adding lime at 6% - 8% is effective in improving the soil's engineering properties, offering a sustainable and cost-effective solution for stabilizing expansive soil in Sudan.
KeywordsExpansive SoilQuick LimeSoil StabilizationShambatAtterberg LimitsCompactionCBR
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