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Pelletization is a worldwide process used in producing artificial aggregates although its usage is not common in Turkey. In this study, lightweight aggregates (LWAs) were manufactured through cold-bonding pelletization of ground granulated blast furnace slag (G) and two types of fly ash with different finenesses (Fly ash A and B). Ordinary …
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Blast Furnace Slag is produced to meet state specifications for gradation and other key requirements. The American Society of Testing and Materials (ASTM C-125, Definition of Terms Relating to concrete and concrete Materials) defines Blast Furnace Slag as "the non-metallic product consisting essentially of silicates and aluminosilicates of calcium …
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Slag aggregate sample was collected from a crushing plant of induction furnace slag of a local steel manufacturing company. The slag and brick aggregates were tested for grading, unit weight ...
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Building manufacturing has played a significant part in the urbanization and industrialization that has occurred in recent decades. Approximately 5–10% of global employment is provided by the construction industry, which also accounts for 5–15% of national GDP [].About 40% of overall energy use and 30% of total natural resource …
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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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Steel Slag - Asphalt Concrete INTRODUCTION Steel slag can be processed into a coarse or fine aggregate material for use in dense- and open-graded hot mix asphalt concrete pavements, (1,2,3) and in cold mix or surface treatment applications. (4) Proper processing of steel slag and special quality-control procedures are extremely important in selecting …
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Aggregate crushing plant produce construction aggregates widely used for making concrete production. The aggregate process consists by progressive stages of crushing, screening, and washing. ... slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined material in the world. Aggregates are a component of …
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The use of slags in recycled aggregate concrete. Paul O. Awoyera, ... Oluwatobi G. Aluko, in The Structural Integrity of Recycled Aggregate Concrete Produced with Fillers and Pozzolans, 2022 7.2.3 Electric arc furnace slag. EAF is a by-product of oxidation of old steel during the production of steel in an EAF.
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After cooling to 93°C (200°F) or lower, the slag is transported to a plant for crushing and screening to a size appropriate for concrete use (Dobrowolski, 1998). Air-cooled blast …
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Cementitious and recycled materials that have the potential to improve various properties of concrete have attracted the attention of many researchers recently. Different types of cementitious and recycled materials seem to possess certain unique properties to change cement concrete. This experimental study aims to investigate the …
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The main slag processing steps are cooling, crushing, metal recovery, sizing/screening, grinding, and stockpiling. ... The slag processing plants have similar facilities to those of aggregate plants, and standard aggregate tests (specific gravity, absorption, gradation, etc.) are also performed on steel slag aggregates. ... Blast …
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EOF steel slag has a greater crushing value because it is more resistant to crushing under progressively applied compressive stress. IS: 2386 ... Cavagnis P., Faleschini F., Brunelli K. Properties of concretes with black/oxidising electric arc furnace slag aggregate. Cem. Concr. Compos. 2013; 37:232–240. doi: …
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The investigation results suggested that the cold-bonded fly-ash lightweight aggregate using slag showed a highest crushing strength of 22.81 MPa and also exhibited lower water absorption of 13.01%. The influence of binary blends of flyash and a binder was observed to be an important parameter for achieving a high strength aggregate.
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Blast furnace slag aggregate comes in two forms: Air cooled blast furnace slag, results when molten slag from a blast furnace slag cools slowly by ambient air (as opposed to rapid quenching), and is processed through a screening and crushing plant for use principally as a construction aggregate. Air cooled slag is not cementitious.
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mortar with blast furnace slag as a fine aggregate was studied by national council for cement and building materials (NCB) [26] . Concrete with a replacement of 100 % natural sand by blast
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The coarse aggregate used in this study of size between 10 mm–12.5 mm. IF steel slag as coarse aggregate was replaced in various proportions (0%, 25% and 50%) instead of natural coarse aggregate in concrete. Download: Download high-res image (283KB) Download: Download full-size image; Fig. 1. Induction Furnace steel slag …
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The development of self-compacting concretes with electric arc furnace slags is a novelty in the field of materials and the production of high-performance concretes with these characteristics is a further achievement. To obtain these high-strength, low-permeability concretes, steel slag aggregates and cupola slag powder are used. To prove the …
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porosity of slag. A pilot plant was constructed, and pro-duction of BFG under 1% became possible using this plant. 1. Introduction Due to the high porosity of blast furnace slag …
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This paper compares and discusses some technical and short-term environmental characteristics of two blast furnace slags; a freshly produced blast …
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Sieve analysis result of fine aggregates are in shown in Table 1 and the other test data for materials are given in Table 2. Table1: Sieve analysis result of fine aggregates 4.1.3 GBFS The blast furnace slag was procured from Durgapur Steel Plant a unit of Steel Authority of India Limited.
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Blast furnace slag has great potential for use as an alternative coarse aggregate to replace conventional/natural coarse aggregates in constructing road subbase and bituminous surfacing layers [7].
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An increased compressive strength of concrete was observed up to 30% replacement of coarse aggregate with ballast furnace slag [25]. Sabapathy et al., [26] modified the surface of EOF steel slag aggregate by treating it with a mixture of 1:6:14 (cement quarry dust: steel slag). The treatment modified the surface by sealing the …
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Slag aggregates are obtained by crushing of smelter slag or by special treatment of fire-liquid slag melt (molten slag aggregates). Currently there are many types of concrete …
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1.4.2. The basic oxygen furnace (BOF) The BOF process forms part of the primary steel production route, which also incorporates the BF process. In a BF, the iron ore, limestone and fuel are continuously supplied through the top section of the furnace, while heated air is forced into the lower section (Geerdes, Toxopeus, & Van der fliet, 2009).The end …
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Pelletized blast-furnace slag resulted from cooled blast-furnace slag. It has a vesicular texture and it is used as a lightweight aggregate and finely grounded as cementitious material. Air-cooled blast-furnace slag is naturally cooled with moderate sprinkling. The crystallized slag, after crushing, sieving, and removing magnetic matter, can be ...
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GGBS: Ground granulated blast furnace slag is in white colour and is free from lumps. Tests conducted on ... Fine aggregate: Artificial fine aggregates were obtained from crusher plant. The sand used for this project was locally procured and conformed to grading zone II as per IS 383-1970. The test result indicated that, the
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mately 410 t of solidified slag was produced. The mobile crushing plant is shown in Photo 4. This plant consists of an 80 mm screen, an impact crusher, a 5 mm screen and an ore polishing machine. The crush- ... furnace slag coarse aggregate with low water absorp-tion. All of the components specified in the JIS stan-
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The bulk relative density of expanded slag is difficult to determine accurately, but it is approximately 70 percent of that of air-cooled slag. Typical compacted unit weights for expanded blast furnace slag …
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The present study evaluates the effect of utilising granulated blast furnace slag as a partial substitution of the fine fraction of natural aggregates on various concrete parameters using the general factorial approach. Two levels of the water/cement ratio (0.45 and 0.5) and four different percentages of granulated blast furnace slag (0, 20%, 40% …
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These findings notwithstanding, the distances from the aggregate quarry to the asphalt plant, as well as the distances involved in BOF slag production, differ depending on particular conditions. Therefore, a more interesting comparison would be to consider the carbon footprint of different transport distances for each aggregate.
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