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Cupola slag is a waste material of the steel and iron industries. Its composition is determined by the cupola furnace and other elements used in steel and iron manufacturing. This paper investigates the characterization behavior of various cupola slag materials. As a result, x-ray fluorescence (XRF), x-ray diffraction (XRD), thermogravimetry differential thermal analysis, and scanning electron microscopy (SEM) methods were used to characterize three cupola slag samples from distinct origins. In addition, various physical properties were used to compare different cupola slags. The specific gravity values of CS-1 (cupola slag-1 sample), CS-2 (cupola slag-2 sample), and CS-3 (cupola slag-3 sample) are 1.36, 2.5, and 2.917, respectively. The density and water absorption for CS-1, CS-2, and CS-3 are 1414.86, 1477.71, and 1796 kg/m3, and 0.37%, 0.32%, and 0.26%, respectively. Cupola slag also includes a larger percentage of lime, according to XRF data, which contributes to its improved binding characteristics. A higher calcium oxide content in CS-3 could facilitate the pozzolanic process. The presence of angular particles that aid in material binding is seen in the SEM image. Compounds with a nanostructure are then flawlessly blended into the mixture and grouped with calcium alumina silicates formed by cement hydration. The XRD pattern of cupola slag exhibits high peaks, indicating that the material is crystalline in character and can be utilized as sand. It also shows the presence of other chemical compounds, such as silica, which ranges from 30% to 45%. CS-1 and CS-2 have comparable XRD patterns. However, CS-3 has a somewhat different pattern because of the greater CaO content. Weight loss begins at higher temperatures, which shows that the material is stable at higher temperatures, according to a thermo-gravimetric study. The differential thermal analysis curve of CS-3 indicates that the material remains stable up to a temperature of 600 °C. The physical characteristics of all cupola slag samples show that cupola slag may be utilized to make sustainable building materials because of its lower specific gravity, density, and water absorption.
Cupola slag is a waste material of the steel and iron industries. Its composition is determined by the cupola furnace and other elements used in steel and iron manufacturing. This paper investigates the characterization behavior of various cupola slag materials. As a result, x-ray fluorescence (XRF), x-ray diffraction (XRD), thermogravimetry differential thermal analysis, and scanning electron microscopy (SEM) methods were used to characterize three cupola slag samples from distinct origins. In addition, various physical properties were used to compare different cupola slags. The specific gravity values of CS-1 (cupola slag-1 sample), CS-2 (cupola slag-2 sample), and CS-3 (cupola slag-3 sample) are 1.36, 2.5, and 2.917, respectively. The density and water absorption for CS-1, CS-2, and CS-3 are 1414.86, 1477.71, and 1796 kg/m3, and 0.37%, 0.32%, and 0.26%, respectively. Cupola slag also includes a larger percentage of lime, according to XRF data, which contributes to its improved binding characteristics. A higher calcium oxide content in CS-3 could facilitate the pozzolanic process. The presence of angular particles that aid in material binding is seen in the SEM image. Compounds with a nanostructure are then flawlessly blended into the mixture and grouped with calcium alumina silicates formed by cement hydration. The XRD pattern of cupola slag exhibits high peaks, indicating that the material is crystalline in character and can be utilized as sand. It also shows the presence of other chemical compounds, such as silica, which ranges from 30% to 45%. CS-1 and CS-2 have comparable XRD patterns. However, CS-3 has a somewhat different pattern because of the greater CaO content. Weight loss begins at higher temperatures, which shows that the material is stable at higher temperatures, according to a thermo-gravimetric study. The differential thermal analysis curve of CS-3 indicates that the material remains stable up to a temperature of 600 °C. The physical characteristics of all cupola slag samples show that cupola slag may be utilized to make sustainable building materials because of its lower specific gravity, density, and water absorption.
The study examines the viability of using fly ash, which is the burned residue of industries and needs to be managed properly where it appears to be an alternative source of building material, in place of some of the cement in paver blocks and cupola slag as a partial replacement of fine aggregate in light of the growing pollution caused by construction materials. The research aims at the possibility of replacing the natural sand and cement with substitutionary in the production of paver blocks. This study is based on several proportions of the replacement of fine aggregate and cement with cupola slag waste, and fly ash. To reduce carbon dioxide emission, the greenhouse effect is caused by due heat of the hydration of cement which creates a bad impact on the environment. The different proportions were made with different percentages such as FA (40%, 45%, 50%, 80%, 85%, 90%) by replacement of cement and CS (50%, 55%, 60%, 100%) by replacing natural soil gives satisfactory results. The compressive strength was satisfactory to normal concrete paver blocks. M3 (60CS:40FA: 50FA: 50Cement) proportion is the optimal proportion out of all of them. The results were noted which determines the use of Paver block in construction materials.
Gray cast iron is still the most used material for the production of castings. It can be made in several ways, but the most efficient and economical way to make gray cast iron is in a cupola furnace. A by-product in its production is slag, which arises from impurities that may be present in the charge, from coke, which is used as fuel for the cupola furnace and part of it also passes into the slag, from the lining of the cupola furnace as well as from oxides formed during of the smelting process, sulfides and phosphides. The amount of slag from the cupola furnace represents 5-10% of the weight of the produced metal. Gray cast iron can be melted in a hot-air or cold-air cupola furnace, and the slag can be cooled on the air to form lump slag, or it can be water-cooled to form granular slag. In the article, the authors dealt with the treatment of slag and its use in the preparation of concrete. In the first series of experiments, slag was used as a substitute for sand in concrete, being added in different amounts and the properties of the concrete were tested after 28 days, 3 months, 6 months and after a year. In the second series of experiments, it was ground to the grain size of cement and was added as a substitute for cement in concrete. The quality of the raw concrete was monitored by the cone test and the quality of the hardened concrete by measuring the compressive strength and hardness. However, the achieved results did not meet our expectations and were the worst compared to other metallurgical slags.
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