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http://hdl.handle.net/11129/3153
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Title: | Improvement of clay soils using lime piles |
Authors: | Sezai, Zalihe Abiodun, Abiola Ayopo Eastern Mediterranean University, Faculty of Engineering, Department of Civil Engineering |
Keywords: | Civil Engineering Expansive Soils - Soil Consolidation. Aggregation Electric Resistivity Expansive Soil Floculation Lime Piles |
Issue Date: | Jan-2013 |
Publisher: | Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ) |
Citation: | Abiodun, Abiola Ayopo. (2013). Improvement of clay soils using lime piles. Thesis (M.S.), Eastern Mediterranean University, Institute of Graduate Studies and Research, Dept. of Civil Engineering, Famagusta: North Cyprus. |
Abstract: | The challenges posed by expansive soils to civil engineering structures in terms of
damages and billions of dollars loss to repair and maintenance have been the major
concern of 21st century researchers. In the last decades, lot of research works had
been done to find feasible solutions to these problems. The challenges that the
problematic soils caused are linked to their inappropriate engineering properties such
as swelling, shrinkage, strength, and compressibility. The deficient properties of the
expansive soils are attributed to the nature of their mineral type, structure, pore sizes,
pore ionic solution etc. In order to transform the deficient properties to desirable
properties required for engineering designs and applications, there is a need for a
safe, economical and long lasting deep soil stabilization technique(s). In this study, a
detail laboratory program was performed on a typical expansive soil to examine its
physical and engineering properties in its natural state and when stabilized with a
lime-pile technique. Five lime-piles of 3 cm each in diameter and 30 cm in height
were constructed to stabilize the soil block which is 40 cm in diameter and 36 cm in
height. The lime (Ca2+ ions) migrated from the piles into the soil block at different
curing periods of 28, 90 and 120 days and produced different stabilized soil
aggregates at different lime-pile distances. Extensive laboratory tests such as CBR
and electrical resistivity were performed on the natural and the stabilized soils
extracted at different lime-pile distances and curing periods and the test results were
compared and discussed. The results of the tests indicated significant changes in the
physical and engineering properties of the stabilized soils compared to the natural
soil. The CBR test results suggest that the stabilized soil in 120 days of curing is fair
enough to be used as both subbase and subgrade for highway and foundation
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constructions. The electrical resistivity measurements of the natural and lime-pile
modified soils indicated that with lime treatment and curing time, the electrical
resistivity of the lime treated soils decreased due to the particle aggregation and
flocculation. The electrical resistivity (ER) test results suggest that the ER
measurements can be used as a monitoring technique for lime diffusion in in-situ
lime-pile applications.
Keywords: aggregation, electric resistivity, expansive soil, flocculation, lime piles. |
Description: | Master of Science in Civil Engineering. Thesis (M.S.)--Eastern Mediterranean University, Faculty of Engineering, Dept. of Civil Engineering, 2013. Supervisor: Assoc. Prof. Dr. Zalihe Sezai. |
URI: | http://hdl.handle.net/11129/3153 |
Appears in Collections: | Theses (Master's and Ph.D) – Civil Engineering
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