Author : Abullateef Al-Neami, Mohammed
Engineering and Technology Journal,
2008, Volume 26, Issue 10, Pages 1185-1200
The consistency of cohesive soil depends to a large extent on the structure of soil particles
which may be arranged in two systems; dispersed or flocculated. The presence of salts or
acids between the soil particles will alter the arrangement of particles through affecting the
attractive and repulsive forces.
In this paper, a program of laboratory tests is carried out at the University of
Technology/ Baghdad on cohesive soils of different values of Atterberg limits. Samples of
these soils were tested for grain size distribution (sieve analysis and hydrometer). The
falling head permeability test was carried out to determine the coefficient of permeability of
the soils to HCl acid.
The soil parameters determined in the laboratory will be used in the numerical
analysis.The aim of this study is to apply the finite element method to study the steady flow
of pollutants (acids) in a confined aquifer. The program (MULAT) is used for this purpose.
The path of flow of the acid through the soil is traced.
The basic problem solved in this paper is a one of linear flow in a single confined
aquifer. It represents the case of leakage of acids from storage tank and flow of the acids
through the foundation soil. It was concluded from the finite element results that the
maximum head caused by the flow of the acid through the soil decreases with the increase of
the coefficient of permeability and the plasticity index of the polluted soil.