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Abstract
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Article Information:
Study of the Mineralogical Changes of Clay Due to Cement and Lime Addition Using X Ray Diffraction Technique
M. Dafalla and E. Mutaz
Corresponding Author: Muawia Dafalla
Submitted: March 08, 2012
Accepted: April 07, 2012
Published: October 01, 2012 |
Abstract:
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Light structures in semi arid regions suffer from damage due to expansive subsurface soils subjected
to frequent wetting and drying. The use of cement and or lime as stabilizers is a common remedy known to
geotechnical engineers. This research is aimed at investigating the mineralogical changes as viewed by x-ray
diffraction when lime and cement are added to expansive clay. The x-ray diffraction showed that the mineralogy
is not significantly changed due to lime addition while serious alteration and peak collapse of smectite minerals
reported with the addition of cement. The percentage of added cement was found proportional to the change
in expanding minerals in clay. Adding 6% of cement was found to reduce the expanding minerals of Al-Qatif
clay by half compared to 3% cement is added. The stabilization and soil improvement using lime was due to
flocculation of clay particles while the improvement obtained by adding cement was due to the cementatious
bond and alteration of the mineral structure. Flocculation of clay particles and formation of cementatious bond
were found associated with a significant drop in the maximum dry density and changes in the clay compaction
characteristics. The outcome of similar studies will serve as a guide to select the appropriate additive and
quantity to chemically stabilize clay soils.
Key words: Cement stabilization, lime stabilization, x-ray, minerals, , ,
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Abstract
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Cite this Reference:
M. Dafalla and E. Mutaz, . Study of the Mineralogical Changes of Clay Due to Cement and Lime Addition Using X Ray Diffraction Technique. Research Journal of Applied Sciences, Engineering and Technology, (19): 3746-3754.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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