Intrinsic Swelling & Physiochemical Properties Of Swelling Soils From The Sudan
Intrinsic Swelling & Physiochemical Properties Of Swelling Soils From The Sudan
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Date
2015-05-14
Authors
Ali, Suhad El Safi Mustafa
Journal Title
Journal ISSN
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Publisher
UOFK
Abstract
Expansive clay soils cover large areas of Sudan, over one third of the
Sudan’s one million square miles. These areas include most of the
population centers and development project in the Sudan. Extensive
damage and distress have occurred to the water lines, sewers, building,
roads and other structures located in or on the expansive clay in the
Sudan. In some cases, the cost of repairs to or replacement of irreparably
damaged structures has exceeded the structures initial cost.
This thesis focused on identification and classification of expansive clay
soils in the Sudan, to provide warning against expected potential hazards
in the future. In this research sixteen samples were collected from
different areas in the Sudan, Almanshia, Alnishashiba, White Nile ,
Dinder, Malakal, Khartoum North, Omdurman Kosti, Heglieg, Medani,
Soki, Unity State Gadrif and Damazeen. Mineralogical survey was
conducted using the X-ray diffraction technique. This technique enabled
qualitative estimation of minerals present . Montmorillonite was found to
be the dominant mineral for all samples.
An experimental programme was conducted in order to identify the
physical properties that affect the intrinsic swelling and the relationship
between intrinsic swelling and physiochemical soil properties such as
Atterberg Limits and cation exchange capacity. The soil potential for
swelling was determined using free swell and swell Percent.
The liquid limit (LL), Plasticity Index (PI), Cation Exchange Capacity
(CEC), Sand Content (S) and Linear Shrinkage (LS) are found to
correlate quite well with intrinsic swelling. The simple Linear Shrinkage
test can be used as a good indicator of swell potential.
Description
82page
Keywords
Intrinsic Swelling,Physiochemical Properties,Swelling Soils,Sudan