Effect of cement dust on consolidation properties of expansive soil

Abstract

The utilization of by-product wastes as stabilizer materials to problematic soils has become widely common. Such a situation considers as a solution to the negative effects of these materials on the environment, on one hand, and as an economic solution by recycling the wastes in soils’ improvement techniques, on the other. The purpose of the present study is to explore the consolidation properties of Iraqi expansive soil with the addition of one selected by-product wastes materials from the local industry process. The cement dust has been selected as a stabilizer to explored expansive soil. The cement dust has been selected as a stabilizer to explored expansive soil. The cement dust is a waste of cement industry and its deposit is rarely recycled in the local Iraqi industry, and there are significant amounts of cement dust available as waste materials. Herein, the specimens were prepared by mixing the expansive soil with different content of cement dust (from 0% to 30%). An experimental series of consolidation tests were carried out to explore the effects of cement dust on consolidation properties experienced by expansive soil. Test results indicate that cement dust has considerably affected the consolidation properties of expansive soil. In particular, the swelling index (cs) was reduced for one-third of the value of cs of virgin soil.

Evaluation of Tikrit Dune Sand Soil Enhanced with CKD

“…This material is collected by the kiln's "air pollution control system". Mainly, when CKD includes a lot of free lime, its mineral components can probably be useful materials for enhancing different soils [30][31][32][33][34][35].…”