Chemical and Mechanical Soil Stabilization Techniques for Foundations




geotechnical, quicklime, stabilization, compressive strength, permeability, clay, dosage, plasticity


Introduction: The geotechnical study is crucial for foundation design and herein the feasibility of stabilizing soil from Quillollaco Formation in Loja, Ecuador with quicklime. Methodology: Laboratory tests followed ASTM standards. Unaltered soil samples were extracted at depths ranging from 2,00 to 3.00 m and fed quicklime at varying percentages (13,00 to 21,00% and 3,00% for quicklime) during curing periods of 7 to 28 days. Before obtaining results, the soil was classified by primary classification. Laboratory tests included Atterberg limits, Standard Proctor, unconfined compressive strength and permeability.

Results: Consequently, the results indicated that the soil is primarily clay with low plasticity. Although the addition of quicklime increases plasticity and compressive strength, the improvement is minimal and varies with dosage and cure time. Greater compaction and workability are observed with lower quicklime contents. Regarding permeability, moderate to high improvement is recorded with quicklime addition, suggesting enhanced drainage capacity. Disscusion: Stabilization of quicklime soil may improve some geomechanical properties, but its effectiveness and profitability could be limited, especially in clay soils of low plasticity. Emphasis is placed on the need to consider soil stabilization alternatives that are efficient and sustainable from economic and environmental points of view.


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Author Biographies

Jose Luis Chavez Torres, Hohai University / Technical University of Loja

Civil Engineer graduated from the Universidad Técnica Particular de Loja (Ecuador) in 2014, with a Master of Engineering in Civil Engineering/Geotechnics from Hohai University (China) in 2019, and currently pursuing a Ph.D. at the same university. He has worked in the public sector as a project designer, administrator, and construction supervisor, overseeing various civil works for governmental entities. Additionally, he has served as a research assistant and teaching assistant at Hohai University. Currently, he is a faculty member in the Department of Civil Engineering, focusing on soil stabilization, urban expansion, and innovative soil improvement techniques. He also serves as a judicial expert for the Council of the Judiciary and is a founding partner of the consulting firm CONSUR.

Feng Tugen, Hohai University

Dr. Tugen has published over 60 papers, including 16 indexed by SCI and 18 by EI. He has led and overseen numerous significant projects, including those funded by the National Natural Science Foundation and the Ministry of Education. He has conducted dynamic tests for over 20 major projects and holds 3 patents. His accolades include multiple awards for scientific and technological progress and recognition by the Jiangsu Society of Mechanics.  Dr. Tugen has been responsible for overseeing over 20 vertical projects, including the Ministry of Education's Returned Overseas Scholars Fund, the Nanjing Returned Overseas Scholars Fund, the Jilin Provincial Department of Transportation Science and Technology Project, and the Jiangsu Provincial Department of Transportation Science and Technology Project. He has conducted extensive on-site and indoor dynamic tests and dynamic response analysis calculations for over 20 major projects.

Kunyong Zhang, Hohai University

Dr. KunYong Zhang is a professor with extensive expertise in geotechnical engineering. He earned his bachelor's (1997) and master's (2000) degrees from Hefei University of Technology, and his doctoral degree (2004) from Hohai University. In 2008, he was a senior researcher at City University of Hong Kong, and in 2009, he conducted postdoctoral research at Cornell University with China Scholarship Council funding. Dr. Zhang is a member of several prestigious organizations, including the International Society of Rock Mechanics, the International Society of Soil Mechanics, the Chinese Civil Engineering Society, and the Chinese Society of Rock Mechanics and Engineering. He also serves on the 5th Council of the Jiangsu Hydroelectric Engineering Society and the 10th Council of Jiangsu Civil Engineering and Architecture Society.

Maria Gonzalez , Technical University of Loja

María Alejandra González Chávez, a 2024 Civil Engineering graduate from the Technical University of Loja, has significant experience in designing, planning, and executing civil engineering projects, including office renovations at UTPL and technical work at MIDUVI. She is skilled in structural analysis, soil stabilization, and specialized software such as AutoCAD, Revit, ETABS, Cype, SewerGEMS, and WaterGEMS. An author on soil stabilization and sustainable construction, María Alejandra is known for her leadership, teamwork, and problem-solving skills. Fluent in Spanish and English, she seeks a challenging professional environment to further her technical and professional growth. An author on soil stabilization and sustainable construction, María Alejandra is noted for her leadership, teamwork, and problem-solving skills. Fluent in Spanish and English, she seeks a challenging professional environment to further her technical and professional growth.


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How to Cite

Chavez Torres, J. L., Tugen, F., Zhang, K., & González Chávez, M. A. (2024). Chemical and Mechanical Soil Stabilization Techniques for Foundations. European Public & Social Innovation Review, 9.



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