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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29284


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10002722
Modeling of Compaction Curves for Corn Cob Ash-Cement Stabilized Lateritic Soils
Abstract:
The need to save time and cost of soil testing at the planning stage of road work has necessitated developing predictive models. This study proposes a model for predicting the dry density of lateritic soils stabilized with corn cob ash (CCA) and blended cement - CCA. Lateritic soil was first stabilized with CCA at 1.5, 3.0, 4.5 and 6% of the weight of soil and then stabilized with the same proportions as replacement for cement. Dry density, specific gravity, maximum degree of saturation and moisture content were determined for each stabilized soil specimen, following standard procedure. Polynomial equations containing alpha and beta parameters for CCA and blended CCA-cement were developed. Experimental values were correlated with the values predicted from the Matlab curve fitting tool, and the Solver function of Microsoft Excel 2010. The correlation coefficient (R2) of 0.86 was obtained indicating that the model could be accepted in predicting the maximum dry density of CCA stabilized soils to facilitate quick decision making in roadworks.
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References:

[1] Li, H. “The Family of Compaction Curves for Fine-Grained Soils and their Engineering Behaviors”. PhD Thesis, (unpublished),. Department of Civil and Environmental Engineering. University of Alberta, Edmonton Canada. December 2000.
[2] Daita, K.R., Drnevich, V.P., and Kim, D. “Family of Compaction Curves for Chemically Modified Soils”. Publication FHWA/IN/JTRP- 2005/07. Joint Transportation Research Program, 2005, INDOT and Purdue University, West Lafayette, Indiana, US.
[3] Ola, S.A. “Geotechnical Properties of some Nigerian Lateritic Soils” in Tropical Soils in Engineering Practice. Balkema Publishers, Rotterdam, Netherlands, 1983.
[4] Alhassan, M., “Potentials of rice husk ash for soil stabilization” A.U. Journal of Technology, vol 12, No 2, 2008, pp 246 - 250. Available at www.journal.au.edu/au_techno. (November 26 2011).
[5] Apampa, O.A. and Jimoh, Y.A. (2013). “An Evaluation of the Influence of Corn Cob Ash on the Strength Parameters of Lateritic Soils” Proceedings of the International Conference on Civil and Building Engineering, Cape Town, South Africa, November 20 -21, 2013.
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