The reaction mechanism of direct aqueous carbonation of steel slag is first discussed. Akinwumi [ 26] concluded that steel slag can be used as a low cost soil modifier for … This study aims to investigate the chemical and selected significant geotechnical parameters of steel slag as the alternative materials used in road construction. 2011). 10.1371/journal.pone.0168163 [PMC free article] [Google Scholar] Oelkers E. H., Gislason S. R., Matter J. A wide variety of steel slag prices options are available to you, such as machinery repair shops, manufacturing plant, and building material shops. The optimum mix is found to be in the proportion of 65 C + 20 SS + 5 L + 10 RHA. amendment for increasing rice yields in a subtropical paddy field in Fujian Province . Steelmaking slag has several applications. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. PLoS One 11, 1–15. Table2:-Chemical composition of steel slag Constituents Composition (%) In the study, expansive soil is replaced with different CaO 40-50 proportions of Waste Iron slag and various tests are carried FeO 20-30 out to find the specific gravity, Atterberg limits, maximum SiO2 … Leaching of metals from steel slag has also been studied (Fallman et al. Slag-based fertilizers applied in Si-deficient paddy soil improved rice growth, productivity, and brown spot resistance [ 39 ]. After the slag is collected from the separation process it is then cooled using different processes depending on the final size of the product. Basic slag (CaSiO3) is produced through the open-hearth method of steelmaking and is used to amend highly acidic soil. These are described below. 2005, Gomes and Pinto 2006, Huijgen and Comans 2006, Mayes et al. LD steel slag for soil stabilization and soil conditioner. Use of LD slag has been shown to increase the soil pH. 2 Steel Slag was found to be non plastic in nature and Used soil is a loessical silt from the center of Argentina which is … The following conclusions have been drawn. You can download the paper by clicking the button above. Slag-based silicate fertilizer has been widely used to improve soil silicon- availability and crop productivity. Any sandy component or quartz component of the original ore automatically carries through the smelting process as silicon dioxide. Sorry, preview is currently unavailable. Granulated slag for civil engineering works is used for purposes including coastal protection backfill, earth covering for correcting soft ground, road subgrade, and embankments. (2008). Slag from steel mills in ferrous smelting, on the other hand, is designed to minimize iron loss and so mainly contains oxides of calcium, silicon, magnesium, and aluminium. This steel … The geotechnical properties, shearing strength characteristics, and dynamic properties of stabilized soil have been studied. Uses of steelmaking slag. Slags are the final solid wastes from the steel industry. This paper presents the stabilization of expansive soil (C) with steel slag (SS), rice husk ash (RHA), and quick lime (L). But during the incubation time the pH decreased. ), a steel slag, furnace slag, etc. properties of steel slag. By using our site, you agree to our collection of information through the use of cookies. The swell potential of the soil steadily reduced with the addition of steel slag. In this paper, an attempt has been made to utilize the steel slag in improving the geotechnical strength characteristics of soft clayey soil. Today, iron and steel slag is used in many fields where its unique characteristics can be put to effective use. Impacts of steel-slag-based silicate fertilizer on soil acidity and silicon availability and metals-immobilization in a paddy soil. Its pH-raising effect is similar to that of ground limestone. 96 . Various models have been proposed to model aqueous carbonation of steel slag. Experiments have found that application of LD increased the soil pH linearly. Bioremediation approaches assist in the removal of heavy metals in the soil. Steel slag, an unavoidable by-product in iron and steel production, may soon finds its way into agricultural land as soil nutrient, potentially cutting down India’s dependence on fertiliser imports. Their production from waste and associated materials is a proper implementation of the basic objectives and principles of the waste management. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. On the contrary, the use of slag as a raw material for fertil- izer or soil amendment still remains relatively small—160 2)000 tons for blast furnace slag and 100 000 tons for steelmaking slag. The uses of byproducts such as blastfurnace slag and steel slag [electric arc furnace slag and basic oxygen steel (BOS) slag, and ground granulated blastfurnace slag] have long been established in a number of applications in the civil engineering industry. Various percentages of pulverized steel Academia.edu no longer supports Internet Explorer. Generally, CBR and UCS increased up to 8% steel slag treatment of the soil. Slag “Slag is a by-product of steel making. Some of the steel slag from ironworks and dredged soils from marine and waterfront engineering work are partially treated as waste. Scrap steel reclamation – Steelmaking slag contains around 10 % scrap steel, which can be reclaimed through crushing, sorting, magnetic separation and screening process. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. However, there is a lack of information on the flow of steel slag leachate through natural soils. Soil stabilization is an area where bulk utilization of steel slag is possible. Slag is a byproduct of metal smelting, and hundreds of tons of it are produced every year all over the world in the process of refining metals and making alloys.Like other industrial byproducts, slag actually has many uses, and rarely goes to waste. Steel slag offers considerable cost advantages over commercial limestone and has been successfully utilized as a substitute for limestone to neutralize soil acidity in agricultural soils in several countries. We previously reported that steel slag was an effective . Sorry, preview is currently unavailable. To learn more, view our, Analysis of Soil Stabilization by Utilizing Iron Mineral by Products Steel Slag, International Journal of Trend in Scientific Research and Development - IJTSRD, Performance Analysis Of Expansive Soil Treated With Stone Dust and Fly ASH, ASSESSMENT OF CALCIUM CARBIDE WASTE AND CALCINED CLAY AS STABILIZER IN FLEXIBLE PAVEMENT CONSTRUCTION, ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, An Experimental Study on Stabilization of Red Soil by G.G.B.S and Jute Fibre, International Journal of Scientific Research in Science, Engineering and Technology IJSRSET, A PRELIMINARY INVESTIGATION ON THE GEOTECHNICAL PROPERTIES OF BLENDED SOLID WASTES AS SYNTHETIC FILL MATERIAL. Owing to its high Si content, the use of slag as silicate fertilizer is gaining demand. Steel slag resulted in an increase in the unsoaked and soaked CBR, the unconfined compressive strength, and permeability of the soil. 95 . Enter the email address you signed up with and we'll email you a reset link. Steel slag is a calcium-rich industrial waste. However, a mixture of these two kinds of waste has the potential to be used as construction materials when mixed, due to chemical reactions forming secondary phases. STABILIZATION OF SOILS WITH STEEL SLAG AND CEMENT FOR APPLICATION IN RURAL AND LOW TRAFFIC ROADS The goal of this study was to increase the bearing capacity of cement stabilized soil system by addition of furnace steel slag, which will also result in a … 2000, Apul et al. This work evaluates the potential reuse of steel slag to improve the performance of landfill liners. 2008, De Windt et al. A consecutive early rice-late rice rotation experiment was conducted to test the impacts of steel slag on soil pH, silicon availability, rice growth and metals-immobilization in paddy soil. Generally, CBR and UCS increased up to 8% steel slag treatment of the soil. Iron and steel slag utilized for roads is manufactured by crushing and mechanically stabilizing blast furnace and steelmaking slag for use as paving material. The application of steel slag in the soil increases the concentration of Si in the rice straw and promotes a higher yield of grains [ 40 ]. Steel slag is a waste by-product of the steel industry. Enter the email address you signed up with and we'll email you a reset link. nutrients and rice production. As a result of growing environmental awareness, iron and steel slag is highly regarded as a recycled material that can reduce impacts on the environment due … It appears in concrete, aggregate road materials, as ballast, and is sometimes used as a component of phosphate fertilizer. Mineral carbonation of CO2. 4) Adsorption, based on the fact that almost all heavy metal ions can be fixed and adsorbed by clay mineral (bentonite, zeolite, etc. In an incubation study, by adding to the soil converter slag (from Isfahan steel factory, Isfahan, Iran), containing about 24% of Fe oxides, along with elemental sulphur and organic matter, the soil pH has increased, due to the alkaline pH of slag. To learn more, view our, Effect of Corncob ash on the geotechnical properties of Lateritic soil stabilized with Portland cement, Plasticity, Strength and Permeability of Reclaimed Asphalt Pavement and Lateritic Soil Blends, Effects Of Waste Engine Oil Contamination On The Plasticity, Strength And Permeability Of Lateritic Clay, Effects of crude oil contamination on the index properties, strength and permeability of lateritic clay, Soil Stabilization as an Avenue for Reuse of Solid Wastes: A Review. generally decreased, while specific gravity of soil " steel slag mixtures increased with higher steel slag content; MDD and OMC increased and decreased, respectively, with higher steel slag content. In this study, the steel slag has been diluted with soft clayey soil at 5, 10, 15 and 20% of dry weight. By using our site, you agree to our collection of information through the use of cookies. You can download the paper by clicking the button above. The recycling usage of steel slag is limited due to the mutative chemical compositions it contains and its low cementation. 1 Local soil is a material having specific gravity of 2.10 and Steel Slag having specific gravity 4.28. It is made by the separation of the molten steel from impurities while the steel is melted in a large furnace. generally decreased, while specific gravity of soil " steel slag mixtures increased with higher steel slag content; MDD and OMC increased and decreased, respectively, with higher steel slag content. 1,163 steel slag prices products are offered for sale by suppliers on Alibaba.com, of which other metals & metal products accounts for 8%, refractory accounts for 2%, and steel scrap accounts for 1%. The feasibility of utilizing of Steel Slag and Local soil in construction of flexible pavement with variation of Percentage in soil. The permeability coefficient can reach the order of magnitude more than 10 −5 when more than 70% of steel slag was added to silt soil. We evaluate the effect of adding slag to soil on its mechanical and reactive properties when compacted. Steel LD slag has been used as a liming agent for pasture in Northern Spain. Slag-based silicate fertilizer has been widely used to improve soil silicon- availability and crop productivity. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. Using gravel steel slag-treated silt soil can not only reduce the water content in silt soil but also improve its infiltration capacity. We chose steel slag from the steel industry as the test material to improve soil . (PDF) Soil Modification by the Application of Steel Slag | Isaac Akinwumi - Academia.edu This paper provides experimental insights on the modification of a soil using electric arc furnace (EAF) steel slag, which is limitedly used as a construction material because of its volumetric instability. A consecutive early rice-late rice rotation experiment was conducted to test the impacts of steel slag on soil pH, silicon availability, rice growth and metals-immobilization in paddy soil. Steel slag is a complex mixture of oxides, such as CaO, MgO, and SiO 2, which can undergo hydration reactions with H 2 O, increasing the alkalinity, adsorption capacity, and chemical precipitation ability of solutions 19. Academia.edu no longer supports Internet Explorer. Direct aqueous carbonation is one of the routes to slag carbonation. Work are partially treated as waste for increasing rice yields in a subtropical paddy field Fujian. 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