Investigations were carried out on the suitability of granulated blast furnace slag as a mold material for either full or partial replacement of existing silica sand in the foundry industry. The sodium silicate-CO2 process was adopted for evaluating the same. A series of sand tests were performed on silica sand and slag individually and in …
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The applications of steel slag powder and steel slag aggregate in ultra-high performance concrete (UHPC) were investigated by determining the fluidity, nonevaporable water content, and pore structure of paste and the compressive strength of concrete and by observing the morphologies of hardened paste and the concrete …
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Slag powder is a fine-grained byproduct produced during the separation of metal from its ore in various high-temperature metallurgical processes, such as smelting and refining. It is composed of various minerals and …
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The cementing material of fine full-tailings is developed with the fine tailings of Anshan Iron and Steel Company as aggregates, the water quenching slag of blast furnace as the main active material, and the desulphurized ash residue as one of the main activator materials. This paper explores the effects of composite activator with different …
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The workability and the compressive strength of concrete containing super-fine limestone powder and titanium slag powder were studied. It can be proved that the workability is improved and slump ...
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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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search by He [7] indicates that super-fine slag (SS) is bene-ficial for abrasion resistant concrete, and the appropriate content is 40% of the total binder content by mass. How-ever, so far, a few researches about application of NS and SS in abrasion resistant concrete have been reported in literatures. Li et al [8] have reported that rubber powder
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Due to the free lime in steel slag, they determined that samples formed of steel slag cracked during the autoclaving process, the samples containing 80% steel slag and 20% silica powder had 23 MPa compressive strength, the samples having 80% steel slag and 20% fly ash had 5.3 MPa, and the samples having 50% steel slag and …
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Herein, four types of steel slag powders (i.e., coarse steel slag (CSS), fine steel slag (FSS), fine steel slag under precarbonation treatment for 2 h (FSS-C-2h), and fine steel slag under ...
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The entrained flow gasification has been identified as the most promising gasification technology. Serious environmental pollution and waste of land resources are caused by the increasing amount of storage and production of coal gasification slag. The aim of this work is to explore the feasibility of high-temperature combustion and melting …
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It is generated by the addition of lime and/or dolomite that combines with silicates and oxides to form liquid slag. The molten slag is poured into pits or ground bays where it air-cools under controlled conditions, forming crystalline slag. ... Yang, J., & Yan, P. (2013). Cementitious properties of super-fine steel slag. Powder Technology, 245 ...
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As one of VCEM family members, P8000 is an ultrafine powder ground from granulated blast-furnace slag using the state-of-art grinding technology. The average particle size …
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Generally, steel slag fine powder that is of over 80-mesh standard sieve is taken as the standard, and for this, ... in the city of Yingkeluowa, Mexico, an industrial factory building was built by backfilling a 5.5 m deep foundation with steel slag. ... Because the iron present in the steel slag was mainly in the form of ferrous oxide and ...
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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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The compressive strength has increased by 1.41% with the use of 40% replacement of fine aggregates with granite powder. concrete gain more strength than control mix concrete strength, except 15% replacement of granite powder concrete It is observed that, the flexural strength of concrete at 28 days is higher than design mix (Without replacement ...
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High-Calcium Alkali-activated Materials include Calcium and Aluminum-rich materials (({SiO}_{2}+CaO) > 70%), resulting in a hydration gel with (Al) in it's structure, in the form of C-A-S-H, analogous to hydration products in Portland Cement (Pacheco-Torgal et Al., 2015).The most common high calcium binder for alkali activation is slag, a …
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The applications of steel slag powder and steel slag aggregate in ultra-high performance concrete (UHPC) were investigated by determining the fluidity, nonevaporable water content, and pore structure of paste and the compressive strength of concrete and …
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Slag cement is the hydraulic cement that results when molton slag from an iron blast furnace is rapidly quenched with water, dried and ground to a fine powder. The rapid quenching ("granulation") "freezes" slag cement in a glassy state and imparts cementitious properties to the product when ground finely.
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As a result, an effort is made to partially replace fine aggregate in the construction industry with copper slag. The current paper examines the laboratory testing of various concrete mixes (Mix 20, Mix 40, and Mix 60) containing copper slag waste as a partial replacement for fine aggregate (0% to ). The fresh properties and …
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A fine powder. In order to conduct tests on the SiGS slag, SINTEF and Eramet have joined forces with concrete paving specialists Aaltvedt Betong and prefabricated slab manufacturers Block Berge Bygg. "We ground down the slag in order to find out how it would behave as a cement substitute," explains Eidem.
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Three methods have been widely employed to improve the reactivity of steel slag and concurrently reduce its potential harm on cement-based host materials: (i) physical excitation, which stimulates the hydration activity by physically grinding steel slag into finer powder (Liu et al., 2016), (ii) chemical excitation, which adds chemical admixtures, such …
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Introduction. China is the world's largest steel producer, with the China Iron and Steel Association estimating that the country's crude steel production in 2022 will be 935 million tonnes [Citation 1].Steel slag mainly refers to the blast furnace slag and converter slag produced in the process of iron making and steel making, and with the …
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PURPOSE: A method for manufacturing ultra fine slag powder is provided to cost-effectively increase the fineness of the slag powder through a simplified process. CONSTITUTION: A method for manufacturing ultra fine slag powder includes the following: Iron manufacturing/steel manufacturing slag is pulverized using a ball mill or a …
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This can serve as a filling in bulk building materials and coal mines or as a source of activated powder in construction. 27 The maximum concentrate yield of GSP Y is 31.11% ..., and the carbon/ash distribution form of coal gasification fine slag. The ash distributed in the residual carbon surface and the matrix space with different particle ...
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Steel slag is generally regarded as a supplementary cementitious material in cement-based materials, which is conducive to the realization of the goal of carbon peak and carbon neutralization. However, the lower cementitious activity and poorer volume stability of steel slag limit its high dosage in cement-based materials. In this paper, steel slag ultrafine …
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The annual output of steelmaking slag has exceeded 150 million tons. Mass accumulations of slag damage the environment and hinder sustainable development. Preparing cementing materials in the powder form is a promising solution for the large-scale utilization of slag. Our study focused on the effects of MgO and P2O5 on the …
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DOI: 10.1016/J.CONBUILDMAT.2016.03.102 Corpus ID: 138721941; Self-cementitious property of steel slag powder blended with gypsum @article{Zhao2016SelfcementitiousPO, title={Self-cementitious property of steel slag powder blended with gypsum}, author={Jihui Zhao and Dongmin Wang and Peiyu Yan …
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The highly fine slag powder, with a surface area of 400–600 m 2 /kg and a bulk density of 1200 kg/m 3, can be mixed with free lime to replace 40% to 65% of total …
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Blast furnace slag fine aggregate received the JIS A 5012 certification in 1981. The Architectural Institute of Japan and Japan Society of Civil Engineers have also published guidelines on the use of this material.
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on slag properties, thereby presenting basic data for reducing cracks in blast furnace slag concrete to overcome the limitation of early strength degradation. Basic characteristics experiment
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This chapter reviews the physical and chemical characteristics, pretreatment, and utilization aspects of steel slag, a by-product of steelmaking. It also …
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Steel slag block: EAF slag powder; River sands aggregate: P. mucilaginosus: The compressive strength reached 39.3 ± 3.1 MPa, and the water absorption rate was 9.5 ± 0.5% [81] Slag-Modified Cement Mortars: 30% steel slag powder and OPC as binder;natural river sand as fine aggregate: Staphylococcus pasteurii SS9: …
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This rapid cooling, called quenching, creates glassy granules, which are then ground into the fine powder known as slag cement. Slag cement is as old as iron-making itself. In the 1700s, it was combined with lime to make mortar. One of the first major uses of slag-lime cements was construction of the Paris underground in the late 1800s.
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1. Introduction. Steel slag is a by-product of steel manufacturing [].Approximately 160 kg of steel slag is generated per ton of steel produced [].The common chemical compounds in steel slag are SiO 2, CaO, Fe 2 O 3, Al 2 O 3, and MnO [3, 4].The major mineral components of steel slag are C 3 S, C 2 S, C 4 AF, RO phase, and free …
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