Soil stabilizers for local roads and airport construction

Sura A. Saadoon¹, Ali A. Al-Robay² , Kadhim A. Al-Abbas³

¹Department of Roads and Transport Engineering, College of Engineering, Al-Qadisiyah University, sura.saadoon@qu.edu.iq

²Department of Civil Engineering, College of Engineering, Al-Qadisiyah University.

³Department of Civil Engineering, College of Engineering, Thi-Qar University

Abstract

In this article shows that the targeted transformation of cohesive soils can be carried out using stabilizers of different compositions, which in small doses have a positive effect on the formation of the properties of road-building materials due to the activation of physicochemical processes and the optimization of technological processes. The stabilizers in their effect on cohesive soils can be divided into “stabilizers-hydrophobizators” and “stabilizers-hardeners”. The latter, unlike the former, not only reduce heaving processes during freezing of soils, but also sharply change their physical, mechanical, and water-physical parameters. It is possible to expand the boundary of the use of the stabilization method for cohesive soils (from sandy loam to clay with a plasticity number of 27) using a wide arsenal of modern materials, as well as additional introduction of binders into the system.

Keywords: stabilization, hydrophobization, surfactants, cohesive soils, plasticity number, inorganic binders, cement, lime, organic binders