An Investigation Into The Use Of Lime-Stabilized Clay As Subgrade Material
Journal: International Journal of Scientific & Technology Research (Vol.2, No. 10)Publication Date: 2013-01-15
Authors : Ogundipe; Olumide Moses;
Page : 82-86
Keywords : KEYWORDS Stabilization; Lime; Clay; Soil; Strength; compaction; maximum dry density; optimum moisture content;
Abstract
ABSTRACT This study involves the collection of clay sample at a site along Ise Ikere Road at Ikere-Ekiti region and evaluation of its properties in natural state and after stabilization with lime. The major objective of the study is to determine the optimum lime content that will stabilize the clay soil adequately. Also it investigates the level of improvement that could be achieved by stabilizing clayey soil with lime. The tests carried out include mechanical sieve analysis and hydrometer test specific gravity moisture content Atterberg limit test compaction test and California bearing ratio test. The high moisture content of the natual clay soil clearly shows its high water absorption capability. The addition of lime reduces the plasticity index at 8 and 10 lime content. The maximum dry density MDD increases with an increase in lime content from 0 to 8 while a reduction in the MDD was observed at 10. The maximum optimum moisture content OMC was recorded at 10 lime content. The California bearing ratio CBR of the lime stabilized clay increases for lime content of 2 to 8 with the maximum value obtained at 8 while a reduction in the CBR was observed at 10. The reduction in the CBR at 10 might be due to the excess lime in the clay not required for the early strength gain as a result of flocculation.
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