This research aims to study the effect of stone columns on
the change of settlement in clay soils.
We defined the stone column and its uses , We explained
the transfer mechanism of load to the soil .
We spoke about important theories which discus
s the
settlement of clay soil reinforced by stone columns (Priebe
theory) .
we used the unite cell idea to study the settlement behavior
in the clay soils affected by the stone column to generalize
the study on unlimited loading area of clay soils , so we has
been defined some of the basics which relate to the unit cell
.We made a group of tests on a small model to define the
settlement of clay soils in the case of absence of stone
columns and in the case of presence of stone columns with
different diameters to know the change of the settlement
with the change of area replacement ratio inside the unite
cell , then we compared the laboratory tests results with the
results of Priebe (1995) .
