Presented at the Ist International Symposium on Innovative Approaches in Scientific Studies (ISAS 2018), Kemer-Antalya, Turkey, Apr 11, 2018

SETSCI Conference Proceedings, 2018, 2, Page (s): 243-243 , https://doi.org/

Published Date: 23 June 2018    | 1031     11

As widely known, construction on soft soils is generally problematic since the engineering properties of soft soils generally cannot meet the conditions required. Settlement, bearing capacity and seismic performance of the overlying structures is always questioning. Additionally, when soft soils are used as a construction material in hydraulic fills, road embankments, etc., load-settlement relationship is generally far from engineering requirements. Considering the construction costs, soil improvement can be a feasible solution for these types of foundation soils or subgrade materials. Soil improvement techniques involve alteration of soil characteristics by a physical action, e.g. vibration, substitution of soft soil layer with a stronger material or improving the engineering properties of the existing soils by mixing the soil with a stronger material. In recent years, partial or complete replacement of soils by industry wastes is increasingly drawing attention due to its benefits including environmental considerations and improvements in engineering properties of soils. Electric Arc Furnace (EAF) slag is a waste material produced during the manufacture of crude steel in electric arc furnace process. In this research, the effectiveness of the use of EAF for soil improvement purposes is evaluated within an experimental framework. The effects of EAF inclusion on index and mechanical properties of a clayey soil is investigated and results are presented in detail. In this scope, clayey soil was replaced with EAF slag at 30% and 50% percentages and soil mechanic laboratory tests such as atterberg limits, proctor, permeability, shear box, static triaxial tests were conducted to obtain the mechanical properties and strength parameters of the admixture soils. The results showed that partial replacement of EAF slag with clayey soil provided significant improvements in mechanical properties. Moreover, the results revealed that, inclusion of EAF slag in unstable soils like clayey soil, can significantly improve soil strength parameters  

Keywords - Electric Arc Furnace, Clay, Soil improvement