International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 08 | Aug 2024
p-ISSN: 2395-0072
www.irjet.net
Sustainable Utilisation of Steel Slag and Titanium Gypsum as Granular Column for Ground Improvement in Geotechnical Projects Amruth raj B. R1, Darshan. R2, Hemanth Kumar. M. S3 , Venkatesh. T. M4 , Varun. S5 1,2,3,4, UG Students , Dept. of Civil Engineering , Maharaja Institute of Technology Mysore.
5Assistant Professor, Dept. of Civil Engineering , Maharaja Institute of Technology Mysore.
-----------------------------------------------------------------------***-------------------------------------------------------------------Steel slag, a byproduct of steel manufacturing from basic Abstract - Granular column reinforcement stands as an
oxygen or electric arc furnaces, finds extensive use as aggregates in concrete and road construction. With the surge in steel production, steel slag generation has increased significantly. Efforts to repurpose this waste have led to its utilization as replacement material in asphaltic concrete, road construction, and as a soil improvement agent when mixed with activators like quicklime and sodium metasilicate. Studies demonstrate that incorporating steel slag fines enhances soil strength, durability, and reduces soil expansion potential.
appealing mitigation strategy widely embraced in geotechnical engineering for bolstering bearing capacity, minimizing settlement, and expediting consolidation. The utilization of industrial byproducts like titanium gypsum with steel slag in soil stabilization not only presents an environmentally friendly approach but also proves costeffective in managing solid waste disposal. Previous studies have extensively explored the bearing capacity and settlement of ground improved by titanium gypsum with steel slag granular columns, with or without geosynthetic encasement.
Further investigations explore the integration of pulverized steel slag into various soil types, showcasing reduced plasticity and swelling potential while enhancing permeability and cured strength. Combinations of steel slag, rice husk ash, and lime have effectively stabilized expansive soil, with optimum mixes resulting in substantial increases in compressive strength and stiffness. Moreover, introducing slag-based composites demonstrates significant improvements in expansive soil properties, particularly in reducing swelling potential and enhancing overall strength. The addition of steel slag to cementstabilized dredged sludge has been studied, indicating optimal steel slag contents to bolster shear strength. In soil engineering, traditional methods like granular (stone) columns have been crucial in augmenting strength, permeability, and reducing compressibility in weak soils.
However, a paucity of research has delved into the response of ordinary stone columns without encasement and the potential of geosynthetic encased titanium gypsum with steel slag columns under lateral loading conditions. In this paper, we investigate the lateral load capacity of titanium gypsum with steel slag granular column-soil composites, exploring the integration of titanium gypsum with steel slag for enhanced reinforcement. To achieve this, a comprehensive series direct shear tests were conducted on the column-soil composites. These tests encompassed titanium gypsum with steel slag columns, ordinary stone columns with or without geosynthetic encasement. Our study specifically delves into analysing the impact of column material type titanium gypsum with steel slag and sand, and the introduction of titanium gypsum to the steel slag mixture. Parameters such as cohesion and stiffness were meticulously measured during these tests. The experimental findings distinctly demonstrate the efficacy of employing titanium gypsum with steel slag columns, especially when augmented with titanium gypsum, in significantly improving the lateral load-bearing performance of soil.
2. LITERATURE REVIEW Mohammad Javad Rezae et.al., (2022): Utilisation of industrial wastes in civil engineering applications as a construction material is cost effective and environment friendly. This study focused on the utilisation of steel slag materials as granular columns to improve problematic soils. On the other hand, the effects of properties of column materials, diameter of column, were investigated. In this study, a series of large direct shear tests were done to study the response of granular column-soil composites with or without the geosynthetic encasement under a lateral loading condition.
1. INTRODUCTION Numerous studies have explored the potential of industrial waste in civil applications, seeking cost-effective and ecofriendly alternatives for construction materials. For instance, research has delved into various waste materials like fiber waste, fly ash, blast furnace slag, stone waste, rubber shreds, zeolite, and waste plastics, examining their utility in ground improvement, concrete production, brickmaking, mortar, and subgrade construction for roads.
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