Improvement of gypseous soil by clinker additive

الملخص EN

In this paper, mechanical properties were studied for gypseous soil brought up from Al-Axandria region, Babylon Governorate.

Gypsum content is equal to (40%).

Many tests were employed on disturbed and undisturbed samples collected at depth (1-1.5) m.

Clinker material used in cement was chosen as additive to study its effect on improvement of gypseous soil by using three crushed percentages (2, 4, & 6) .% The results marked that (4) % clinker decreases the collapsibility sharply; more than 73 % of improvement in collapse potential has been achieved at this percent of clinker.

Also, compressibility decreases with increase of clinker percentage.

The compression index decreased from 0.17 to 0.1 (29_41% reduction with increases of clinker).

The shear strength parameters of the treated soil determined by direct shear test are more those than for natural soils due to increase in the cohesion and decrease in angle of internal friction.