Slag uses in making an ecofriendly and sustainable concrete: …
Abstract. A single ton of ordinary Portland cement (OPC) demands around 4.0 G Joule energy and creates about a ton of CO 2 emission. As part of our effort to …
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Abstract. A single ton of ordinary Portland cement (OPC) demands around 4.0 G Joule energy and creates about a ton of CO 2 emission. As part of our effort to …
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Moreover, slag occurs in two main forms: crystalline and granulated slag. It is used in concrete production as coarse aggregates, fine aggregates, and mineral admixtures, depending on its formations. The crystalline form commonly used is the coarse BFS and electric arc furnace (EAF) slag while the granulated form is BFS fines and …
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Abstract. High titanium heavy slag (HTHS) is a typical solid waste produced in the iron production process of vanadium titanomagnetite. The feasibility of using the HTHS as coarse aggregates in the two gradations of AC-13 and AC-20 asphalt mixtures mixed with base asphalt and SBS modified asphalt binders was discussed in this paper.
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The air cooled slag showed some benefits due to internal curing however it was not as effective as slag A. 3 200 Strain ( 100 Stress (MPa) Slag A Slag B Slag F Plain 0 -100 Slag A Slag B Slag F Plain 2 1 0 -200 -300 -1 0 2 4 6 8 10 12 14 0 2 Age of Specimen (d) 4 6 8 10 12 14 Specimen Age (d) (b) (a) 334 335 336 FIGURE 4 Influence of internal ...
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The production and use of steel slag then was 16.8 million tonnes, ... than granite aggregate. Thus, to use steel slag a ggregate in asphalt mix, it shall not simpl y follow .
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2009. 1. It has been more than 30 years since the use of blast furnace slag as concrete aggregate was included in JIS; however, it is not very popular today, and the annual sale of slag for aggregate use of Nippon Steel & Sumitomo Metal Corporation stays at the level of one million tons. With the latest trend toward a recycling oriented society ...
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Ferrous slag is currently underutilized. Although the construction industry does use some slag as an aggregate, most is simply discarded. However, slag could be used to treat acid soils or acid mine drainage. Doing so would both offset the cost of restoring abandoned mine areas, as well as decrease steel manufacturers' current …
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Steel slag is a solid waste produced in crude steel smelting, and a typical management option is stockpiling in slag disposal yards. Over the years, the massive production of steel slags and the continuous use of residue yards have led to vast occupation of land resources and caused severe environmental concerns. Steel slag …
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The use of FCS was also explored in the production of fire brick [25], [64], unfired brick [65], and lightweight aggregate [42] as new utilization opportunities for FCS. This review focused on the utilization of FCS in concrete production as …
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Steel slag production is estimated as 10–15% of crude steel production [17]. According to World Steel Association (Worldsteel) ... When steel slag is used as aggregate in asphalt superstructure, it showed higher stability values when compared to commonly used limestone samples. The reason for the better performance of the slag …
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As is known, aggregates with high particle density such as limonite (2Fe 2 O 3 H 2 O), magnetite (Fe 3 O 4 ), and barite (BaSO 4) are used in the production of heavy concrete. According to the particle density values obtained, steel furnace slag is suitable …
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In the US, about 60.3% of the total steel slag production is directly used as road base, while the remainder is used for asphaltic concrete (10.9%), fill (10.8%) and cement clinker production ... Use of BOF slag as aggregates in concrete. In general, concrete with BOF slag aggregate was found to have poor workability (Pang et al., ...
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The LD slag is cooled, crushed and screened. The fines are utilised in sinter making and lumps are charged in the blast furnace. The iron content is the major basic difference between BF slag and steel slag. In BF slag, FeO is around 0.70%, whereas in case of steel slag, total iron content varies from 16 to 25%.
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Steel slag particles can potentially be used as aggregates in concrete production. However, the volume stability of steel slag is poor, and the direct use of untreated steel slag aggregate (SSA) may cause cracking and spalling of concrete. The present research summarizes, analyzes, and compares the chemical, physical, and …
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The air cooled slag showed some benefits due to internal curing however it was not as effective as slag A. 3 200 Strain ( 100 Stress (MPa) Slag A Slag B Slag F Plain 0 -100 Slag A Slag B Slag F Plain 2 1 0 -200 -300 -1 0 2 4 6 8 10 12 14 0 2 Age of Specimen (d) 4 6 8 10 12 14 Specimen Age (d) (b) (a) 334 335 336 FIGURE 4 Influence of internal ...
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Steel slag is a sustainable aggregate for asphalt road production. (Source: National Slag Association ) According to the Washington State Department of Transportation's Use of Steel Slag Aggregate in Pavements report in 2015, a high iron oxide content in steel slag aggregates creates pavement that is both hard and dense, …
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Data on actual US slag production are unavailable, but it is estimated to have been in the range of 18–25 million tons in 2013 ... The use of EAF slag aggregates in concrete can increase compressive strength up to 20 % compared to conventional concrete. The use of LF slag as 30 % of the total binder and EAF slag as coarse aggregates …
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Since the construction waste and blast furnace slag wastes are available in vast amounts in Turkey, it is economically and environmentally suitable to use these materials as aggregates in the production of more durable concrete mixtures. © 2015 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of Istanbul …
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Blast Oxygen Furnace (BOF) slag represents one of the largest waste fractions from steelmaking. Therefore, slag valorisation technologies are of high importance regarding the use of slag as a secondary resource, both in the steel sector and in other sectors, such as the construction or cement industries. The main issue regarding the …
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Road construction materials. Pavement performance. 1 Introduction. Steel slag is a solid waste derived from the steelmaking process, which accounts for …
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Artificial steel slag aggregates were prepared via carbonating the mixes of steel slag, fly ash and Portland cement, of which the microstructure, property and their impact on the performance of concrete were investigated.Calcium carbonates were the main binders in the aggregates, of which the formation yielded dense microstructures …
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30,000 tonnes of aggregate [15]. This fact notwithstanding, large quantities of BOF slag can meet the needs of aggregates for road construction. The use of waste and by-products is one of the most promising techniques for sustainable roads, as it provides a double benefit [16]. On the one hand, it reduces the extraction and …
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At the moment, most steel slag is being used as unbound aggregate for ashphalt concrete pavement in many countries. However, the use of steel slag as a …
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Ladle furnace slag and electric arc furnace slag are not harmful to the environment when used as aggregates [4]. Steel slag is a major by-product of the steelmaking process, and its production rate is about 8% to 15% of the crude steel output [7]. The production of 1 ton of steel produces approximately 100 kg of steel slag [8].
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The average fine particle ratio of the BOF slag samples was higher than the natural aggregate (Fig. 4), while the average fine particle ratio of the EAF slag samples was close to the natural ...
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Product end use: unbound steel slag aggregate - granular fill and general fill capping Standard: BS EN 13242 Application specification: Highway Works series 600 and BS EN 13285
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Steel slag is a by-product of the steel production process, ... Moreover, when the steel slag aggregate with added EDTA was used in concrete casting, the compressive strength was 5.2–13.3 MPa higher than that of the slag without EDTA, as shown in Fig. 7 (b).
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Large amount of slag is obtained during the production of ferrochromium. This by-product has properties comparable to natural aggregates. However, almost all of the ferrochromium slag is landfilled. The main objective of this study was to investigate the effects of ferrochromium slag aggregate on the mechanical properties and permeability …
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Steel slag particles can potentially be used as aggregates in concrete production. However, the volume stability of steel slag is poor, and the direct use of untreated steel slag aggregate (SSA ...
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Yu et al. [18,142] proposed a self-stressing steel slag aggregate concrete filled steel tubular stub columns and found that the expansion of the core steel slag concrete can enhance the axial compression capacity of the short column and the bond strength of the steel-concrete interface. Figure 10.
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Blast furnace (BF) slag is primarily used in cement production and unorganized work such as landfills and railway ballast in India. A practical solution to avoid use of natural concrete aggregates is resorting to artificial aggregates like industrial wastes, steel slag and copper slag from steel plants and copper industries, respectively ...
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The utilization of solid waste is the challenge for the civil and environmental engineers to utilize the waste from different industry to excel the sustainable development, and in the same time, it is matching with the cost concern of the present materials. Copper slag is a by-product obtained during smelting and refining of copper. The waste copper …
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The slag can be used as an aggregate in various types of concrete structures associated with road construction: pavements, precast and prestressed units, foundations, curbs, …
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Steel slag is a by-product discharged from the steelmaking process, which is characterized by abundant free calcium/magnesium oxide, low cementitious properties, …
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