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production of slag used as aggregates
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(PDF) Steel Slag Aggregate For Asphalt Pavement
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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Use of Steel Slag as an Alternative to Aggregate and Filler in …
Slag of iron and steel used as aggregates for asphalt roads can be recovered as by-products. The steel slag is a residue of the production process of steel. The slag is mainly composed by: silica, alumina, titanium, iron sand and combinations of calcium and magnesium oxides. The function of the slag during the steelmaking process …
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A review of steel slag usage in construction industry for …
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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Use of waste copper slag, a sustainable material
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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Application of Steel Slag as an Aggregate in Concrete …
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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Recycling of steel slag aggregate in portland cement concrete…
According to the three different furnaces in the steelmaking process, steel slag can be categorized into basic oxygen furnace (BOF) slag, electric arc furnace (EAF) slag, and ladle furnace (LF) slag (Yildirim and Prezzi, 2011).Fig. 1 shows different steel making processes and the production of steel slags. As BOF and EAF have similar raw …
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Autoclaved steel slag coarse aggregate: A potential solution …
Previous research [38] demonstrated that the autoclaving process, in which the steel slag samples were subjected to steam at 2.1 MPa and 216 ℃ for three hours, hydrated nearly all expansive oxides, including f-CaO and periclase, in steel slag. This finding suggests that implementing an autoclave treatment with appropriate heat …
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Recent applications of steel slag in construction industry
Industrial by-product utilization in concrete has been an important choice of researchers over the years (Khan et al., 2016; Qasrawi, 2014).Steel slag has been utilized as aggregate/cementing material in concrete by various researchers over the years (Faraone et al., 2009).Recycling of metallurgical by-products will ensure the sustainable industrial …
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The Road to Sustainability: Using Steel Slag for Asphalt …
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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Feasibility of high titanium heavy slag used as aggregates …
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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Application of Steel Slag as an Aggregate in Concrete Production…
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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Mechanical, Physico-Chemical and Morphological …
The great mechanical resistance of steel slag makes it superior to natural aggregate when used as an aggregate. Steel slag as a filler ingredient in concrete has been the subject of several investigations. ... EOF steel slag is not used in cement production because it has no cementitious properties. The mechanical qualities of EOF …
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Comprehensive Analysis of Steel Slag as Aggregate for Road …
In 2017, around 1200 million tonnes of steel were produced by the integral route and around 480 million tonnes were produced by the electric route [ 5 ]. These …
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Application of Steel Slag as an Aggregate in Concrete …
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 …
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An Overview on Utilization of Steel Slag as Road …
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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Aggregate from waste steel slag: quality protocol
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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Sustainability for Blast Furnace Slag: Use of Some
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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Slag Aggregate
Slag, generally classed as a synthetic aggregate (also called artificial aggregate ), is produced by altering both physical and chemical properties of a parent material, which …
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Characteristics of ferrochrome slag aggregate and its uses …
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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Comprehensive Analysis of Steel Slag as Aggregate for …
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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Production of biocement using steel slag
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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Blast Furnace Slag
When the slag is allowed to cool slowly in the air, it solidifies into a gray, crystalline, stony material, or dense slag of angular aspect that can be used as coarse aggregate in concrete production (Zeghichi, 2006). On the other hand, when the molten slag is chilled very rapidly either by pouring into a significant excess of water or by ...
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Slag Usage
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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ReviewSteel slag and its applications in cement and concrete …
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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[PDF] Experimental Study of Steel Slag Used as Aggregate …
Steel slag is a by-product of the steel industry and can be used potentially as aggregate in asphalt mixture. This study evaluates the use of Steel Slag Aggregates (SSA) as substitute for natural aggregates in the production of hot mix asphalt (HMA) for road construction. Based on intensive laboratory testing program, the characteristic …
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Waste to valuable resource: application of copper slag and steel slag
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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Use of steel slag as sustainable construction materials: A …
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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SLAG
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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Use of blast furnace slag in cementitious materials for …
In the cement production two main ores are used: limestone rich in CaO, and clay, rich in SiO 2, Al 2 O 3, Fe 2 O 3 and MgO. ... A Systematic Literature Review, approaching the use of blast furnace slag in cementitious materials used in paving was performed, in which the physical-chemical properties and mechanical resistance were …
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(PDF) Production and Uses of Crushed Rock …
Aggregate is a broad category of coarse to medium grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates ...
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Use of steel slag as sustainable construction materials: A review …
Compared with its application in cementitious materials, the use of carbonated steel slag as aggregates for the production of concrete represents a more suitable option because the carbonated particles of steel slag are prone to agglomeration to form a coarser particle size (Bertos et al., 2004; Mo et al., 2017; W. Shen et al. 2020; Mo …