It is nowadays well reported that
collapsible soils spread in many countries, including United States, Russia,
China, South America (e.g. Brazil), South and North Africa (e.g. Egypt,
Algeria), Middle East (e.g. Saudi Arabia) and many countries in Eastern Europe.
In general, collapsible soils are located in arid and semi-arid regions around
the world. This special type of soil is characterized by abrupt reduction in
strength, excessive and sudden settlement when it becomes wet leading to
failure of the structure. Construction on such a kind of soil is one of the
prominent problems in geotechnical engineering. The main objectives of this study are reporting geological and
geotechnical zonation maps for potentially collapsible soils in inhabited areas
in Egypt. Furthermore, a design
technique for foundations built on a shallow depth of Egyptian macro-porous
collapsible soils (less than 4 m) is developed. The design method includes a
design chart for soil collapse field classification in terms of the most
governing parameters, a method for foundation settlement estimation based on a
correlation between the wetting-induced collapse strain and the applied
pressure, and a design practice to guide practicing engineers to select the
appropriate foundation system to construct on such soil with a great degree of
confidence and safety.
Cite this paper
T. Ayadat and A. Hanna, "Design of Foundations Built on a Shallow Depth (Less than 4 m) of Egyptian Macro-Porous Collapsible Soils," Open Journal of Geology, Vol. 3 No. 3, 2013, pp. 209-215. doi: 10.4236/ojg.2013.33024.
 T. Ayadat and A. M. Hanna, “Encapsulated Stone Columns as a Soil Improvement Technique for Collapsible Soil,” Ground Improvement Journal, Vol. 9, No. 4, 2005, pp. 137-147. doi:10.1680/grim.2005.9.4.137
 T. Ayadat, A. Hanna, M. Abdel-Rahman and M. Sabry, “Effect of Additives on Wetting-Induced Collapse Strain and Shear Characteristics of a Collapsing Soil,” 5th International Engineering Conference, Geo-Technique 3, Session 11, No. 18/8, Mansoura, 27-31 March 2006.
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 T. Ayadat and A. M. Hanna, “Identification of Collapsible Soil Using the Fall Cone Apparatus,” Journal of Testing Materials, Vol. 30, No. 4, 2007, Article ID: GTJ14193.
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