Assessment of soil heave stabization using salty water technique

Abstract EN

Cyclic of heave and settlement of expansive represent one of the main reasons to considerable
damages of structures, roads and highways.

In Egypt there are many areas containing such
expansive soils especially at the arid and semi-arid lands.

Some studies used salty water with
various concentrations to minimize the swelling behaviour of expansive clayey soils.

In this paper an evaluation for the effectiveness of this technique was carried out based on series
of lab experimental tests.

Prepared remolded samples were treated with different concentration of
salt water and the swelling behaviour, engineering properties, and heave parameters were studied
using one-dimensional oedometer test.

The effect of potable water on the dried-pretreated sample
with salty water was also investigated.

The results of the study indicated that, salt water treatment
may be unpractical technique.

Inundation with salty water may apparently minimize soil heave,
however, soil treatment should be applied all through the lifespan of the structure, otherwise,
when dry treated soil is subjected to seepage of fresh water, it may yield higher swelling
potential.