Using Low Permeability Sand-Fadr Mixture Membrane for Isolated Swelling Soil

Desert regions around the Nile valley in Upper Egypt contain great extent of swelling soil. Many different comment procedures of treatment of the swelling soils for construction such as pre-swelling, load balance OR soil replacement. One of the measure factors which affect the level of the aggressiveness of the swelling soil is the direction of the infiltration water directions within the swelling soils. In this paper a physical model was installed to measure the effect of water on the swelling soil with replacement using fatty acid distillation residuals (FADR) mixed with sand as thick sand-FADR mixture to prevent the water pathway arrive to the swelling soil. Testing program have been conducted on different artificial samples with different sand to FADR contents ratios (4%, 6%, and 9%) to get the optimum value fulfilling the impermeable replacement. The tests show that a FADR content of 9% is sufficient to produce impermeable replacement.

Authors:

• Mohie Eldin Mohamed Afifiy Elmashad

Keywords:

• Swelling soil
• FADR
• soil improvement
• permeability

References:

[1] Diamond, W., and Kinter, B. "Mechanisms of Soil-Lime Stabilization."
Highway Research Record, No. 91, IRB, Washington, D.C.: IRB, 1965,
pp. 83-102.
[2] Murakami, S.; Iwamura, K.; Sato, M.; Ikaga, T.; and Endo, J.,
"Comprehensive Assessment System for Building Environmental
Efficiency (CASBEE)," Proceedings of the Fifth International
Conference on Ecobalances, Nov. 6-8, 2002, pp. 575-578.
[3] Çokca, E. (2001) Use of class C fly ashes for the Stabilization - of an
expansive soil, Journal of Geotechnical and Geoenvironmental
Engineering, Vol. 127, 568-573.
[4] UFC (Unified Facilities criteria), FOUNDATIONS IN EXPANSIVE
SOILS, 3-220-07, 16 January 2004.
[5] Holtz, W.G. Expansive Clays - Properties and Problems. Quarterly of
the Colorado School of Mines, 54(4). pp. 89-125.
[6] Mohie ElMashad, Hisham Hafez, Nasser Radwan "USE OF SAND
WITH FATTY ACID DISTILLATION RESIDUALS FOR
EMBANKMENTS CONSTRUCTION", AMERICAN SOCIETY OF
CIVIL ENGINEERS 6th International Engineering and Construction
Conference (IECC-6), pp.131-142, Cairo, Egypt, June 28-30, 2010.
[7] Sweet, P.C., 1994, Waste material resources in Virginia, in Tabilio, M.,
and Dupras, D. L., editors, 29th Forum on the Geology of Industrial
Minerals: proceedings: California Department of Conservation, Division
of Mines and Geology, Special publication 110,p. 29-37.
[8] Annual Book of American Society for Testing and Materials Standards,
Section 4, Volume 4.08, 1992.
[9] Miller, G.A, Azad, S. and Dhar, B. "The Effect of Cement Kiln Dust on
the Collapse Potential of Compacted Shale." Testing Soil Mixed with
Waste or RecycledMaterials, ASTM. STP 1275, (1997),. 232-245.