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Tata Aggreto is a first ever branded product created to upcycle Steel Slag into sustainable aggregates. It is a greener substitute of natural aggregates used in road construction and promises better quality, consistent size and improved availability. ... The free metallic are magnetically separated and the non-metallic slag left after the Slag ...
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This review paper focuses on the role of steel slag aggregate (SSA) and recycled coarse aggregate (RCA) in concrete, considering different percentages of SSA …
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To prepare the original or recycled slag (Fig. 1) or asphalt mixtures, the original and recycled aggregates were grained and mixed for reaching a uniform aggregate grinning matching.As shown in Fig. 2, similar to previous studies [26], the recycled slag and RAP were mixed with 3 and 6 wt% of oil for 2 hrs for …
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The aggregates used in this study were crushed granitic aggregates and steel slag aggregates. A stone crusher plant in the Tumakuru District provided natural aggregates of various sizes. The steel slag aggregates were sourced from a steel plant in Tumakuru. As a binder, Viscosity grade 30 (VG-30) was chosen and obtained from the …
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Concrete forms by bonding the aggregates, obtained by the crushing of large stones via natural resources, with cement paste [63]. ... In concrete mixtures with steel slag aggregate, slag/total aggregate ratio was selected as 0.45, 0.50, 0.55, 0.60 and 0.65. In the concretes containing crushed limestone 60% of the total aggregate was …
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The crushing characteristics of coarse aggregates for asphalt concrete were investigated under static and dynamic aggregate crushing value tests (ACVTs). The effect of various compaction loads …
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This study investigated the influence of four different aggregate systems (i.e., full-NA, full-recycled coarse aggregate, full-recycled fine aggregate, and full-RA) and three different replacement ratios of steel slag (i.e., 0%, 25%, and 50% of the precursor) on the mechanical properties (compressive and splitting tensile strength) and fracture ...
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Steel slag could be valuable for promoting a sustainable relationship between the concrete and steel industries. C 2 S, C 3 S, C 4 AF, and C 3 A in steel slags are typical mineral phases of Portland cement, indicating the potential of steel slags to function as hydraulic materials. Therefore, one recycling option is to grind steel slags …
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Natural coarse aggregate is produced by weathering and abrasion or by artificially crushing a more massive rock and mountains. On the other hand, in India, as per Central Pollution Control Board, Ministry of Environment & Forest, iron and steel industries produces steel slag at a rate of 4 million tonnes per annum that is kept dumped in open ...
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Through autoclave test, the optimum content of steel slag fine aggregate for mortar preparation is 25%. ... SS has the characteristics of high strength, good wear resistance, low crushing value, which makes it meet the physical properties of aggregate requirements [26], [27], [28]. Furthermore, SS is used to partially or fully replace natural ...
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Steel slag is a by-product of the steel industry and usually contains a high amount of f-CaO and f-MgO, which will result in serious soundness problems once used as a binding material and/or aggregates. To relieve this negative effect, carbonation treatment was believed to be one of the available and reliable methods. By carbonation treatment …
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Steel slag is a by-product of the steel industry and can be used potentially as aggregate in the asphalt mixture. This study evaluates the use of Steel Slag Aggregates (SSA) as a substitute for ...
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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 …
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Crushing of industrial waste aggregates is less dependent on its initial density. ... These non-traditional materials include fly ash, steel slag, recycled concrete aggregates and other industrial wastes. Being newly introduced to the construction field, the properties of these materials are not completely revealed till now. ...
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Some of the above applications have mainly economic rather than technical drawbacks, as the crushing of slag to very fine sizes can be excessively costly (Fonseca et al., 2013, Wang et al., 2013). ... (2007) established that the use of steel slag aggregate up to 75% of the coarse fraction improved the behavior of asphalt concretes, ...
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Steel slag contributes to high bulk crushing strength of adsorptive aggregates and the addition of miscanthus significantly weakens the bulk crushing strength. When the content of miscanthus is 5%, SS75M5 has a minimum bulk crushing strength of 1.9 MPa, which is 62.7% lower than the adsorptive aggregate without any …
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SSA is widely used in asphalt aggregate, cement, agriculture amendment, railroad, road base, and gabions [9, 16].So far, SSAs have a high proportion of road construction by 67% [].In the current study, the application of steel slag was considered as a substitution of mineral aggregates in the ballast layer.
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From the comparison results in Figure 5 regarding the crushing values of steel slag, basalt, and limestone coarse aggregates, it can be seen that the crushing value of steel slag is not superior to that of basalt or limestone aggregates. This may be attributed to the more abundant voids and vesicular structures within the steel slag …
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Another study shows how mixing limestone with steel slag as a coarse aggregate can provide an asphalt mixture with high resistance to plastic deformation and good resistance to fatigue failure . ... The extraction process of natural aggregates included crushing and screening. In the case of limestone ("Limestone, crushed, for mill {GLO ...
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After carbonation, the steel slag aggregate had a pulverization rate of 2.4%, an expansion rate of 0.23%, a crushing value of 23%, and a carbon sequestration efficiency of 11.27% per unit weight of aggregate.
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The paper reviews recent developments in well-known applications to the steel slag such as aggregate in bituminous mixes, cement ingredient, concrete …
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Utilizing treated steel slag as coarse/fine aggregate in concrete production is a high-value solution that can alleviate the worry about resource depletion …
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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 waste footprint.
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It is produced by crushing granite stones that are known for their hardness. The size of manufactured sand (M-SAND) is smaller than 4.75 mm. The tests were carried out under IS 383-2016. ... Self-curing concrete is prepared by partially substituting the fine aggregate with steel slag. Based on the results, the ideal proportion of steel slag as ...
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Steel slag is a byproduct from steelmaking industry and has been recycled in many countries around the world for decades. One of the main applications of the recycled steel slag is aggregate for ...
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A comprehensive analysis of the requirements to be met by raw materials used in asphalt mixes was performed, and a pilot test was carried out with two different mixtures: one mix with limestone as coarse …
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The use of steel slag aggregate in HMA may have some disadvantages due to potential volume expansion [13], increased bitumen content, ... The slag processing includes primary crushing for the recovery of ferrous metals, followed by secondary crushing into different aggregate sizes. The processed steel slag aggregate was …
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The workability of the controlled concrete (prepared using coarse aggregates) and the steel slag mixed concrete (prepared by replacing 45 % of coarse aggregates by steel slag aggregate) is similar
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As reported, the carbonated steel slag-based artificial aggregates gained crushing values of 15.68–22.48% and bulk densities of 1230–1300 kg/m 3, and moreover, the concrete cast with the carbonated steel slag-based artificial aggregates showed very stable volume when cured in 80 °C water. In order to further reduce the carbonation …
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The density of steel slag is high, generally above 3.2 g/cm 3, while the density of natural aggregates is about 2.6–2.9 g/cm 3; steel slag has the advantage of …
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The steel slag aggregate, presently produced by a steel plant in Saudi Arabia is utilized in asphalt concrete. The steel slag is produced during the direct reduction of iron in an electric arc furnace. ... It disintegrates to smaller size fractions, due to rapid cooling, thereby necessitating minimal crushing to produce aggregates of the ...
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The study shows that autoclaving treatments significantly changed the characteristics of steel slag aggregates: the f-CaO content, water absorption, and …
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Steel slag aggregates (SSA) can replace natural aggregates in asphalt and cement-based road construction, ... (RCA), prepared through the crushing and grading of waste concrete, which …
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In concrete mixtures with steel slag aggregate, slag/total aggregate ratio was selected as 0.45, 0.50, 0.55, 0.60 and 0.65. In the concretes containing crushed …
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Slag aggregate sample was collected from the crushing plant of steel slag of a local steel manufacturing company. It was found that some slag aggregates were light in weight with a lot of voids and some were heavier with a little or no voids. Therefore, the slag aggregates were separated into three types, such as
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