Jordan Journal of Civil Engineering

Expansive Soil Stabilization Using Steel Factory Dust


Zozk Abdalqadir; Nihad Salih; soran hama Salih;


One of the geotechnical engineering challenges is stabilizing soils because it affects the long-term strength and functionality of structures. For efficiency and durability of expansive soils, shear strength, bearing capacity and other characteristics can be enhanced through stabilization process. This study is focused on the effects of steel factory dust (SFD) as an additive on the improvement of the undesired geotechnical properties of expansive soil (CH soil). A series of laboratory tests were conducted on intact and treated samples. SFD was added by 0, 2, 4, 6, 8, and 10% to the dry soil. The conducted tests are consistency, specific gravity, modified Proctor compaction, swelling pressure and percent, and unconfined compression. The addition of SFD reduced the values of liquid and plastic limits, plasticity index, modulus of elasticity, and allowable bearing capacity. The 10% SFD significantly reduced swelling percent and pressure by 26.8% and 25.4% respectively, while, notably increasing the UCS from 475 to 629 MPa. SFD was found to be a successful waste material in improving expansive soil, which usefully saves the environment.


Expansive Soil, Stabilization, Steel Factory Dust, Swelling, Unconfined Compressive Strength.