WEBDec 30, 2020 · The cementitious activity of iron tailings powder (ITP) as a concrete admixture is investigated and optimized in this study. When the specific surface area (SSA) of ITP is in the range of 450 – 550 m 2 /kg, the activity is larger than that of fly ash, and when SSA is 469 m 2 /kg, the activity reaches its largest value of %. The content .
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WEBAug 1, 2023 · The high carbon emissions in the construction industry and the largescale storage of high silicon iron ore tailings (IOTs, SiO 2 > 60% wt., Fe 2 O 3 > 10% wt.) associated with mining pose a serious challenge to sustainable development. Therefore, using IOTs as a replacement for cement to produce supplementary cementitious .
WhatsApp: +86 18203695377![[PDF] Research on iron ore tailing improving Compressive .](/92wi470/210.jpg)
WEBNov 28, 2015 · The research on whether can iron ore tailing improve the compressive strength of alkali activated slag ing concrete is conducted. The experiment shows that too little or too much powder from iron ore tailing will reduce the compression strength of alkali activated slag concrete, when powder from iron ore tailing achieving optimal .
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WEBSep 20, 2011 · Powder XRD, UV–Vis and FTIR spectra confirmed the formation of single phase magnetite. ... Iron ore tailings, collected from the tailing ponds of iron ore industries (JodaBadbil, Orissa, India), were screened for their iron contents and one sample with relatively high iron content (∼%) was used as one of the starting .
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WEBIn this research, iron ore tailing (IOT) is utilized as the cementitious material to develop an ecofriendly ultrahigh performance concrete (UHPC). The UHPC mix is obtained according to the modified Andreasen and Andersen (MAA) packing model, and the applied dosage of IOT is 10%, 20%, and 30% (by weight), respectively. The calculated packing .
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WEBDec 4, 2021 · The aim of this research is to test the characteristics of concrete by substitute fine aggregate with iron ore tailings and partial glass powder as in the place of cement.
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WEBIn order to study the effects of iron tailings powder on the mechanical performance of alkaliactivated slag concrete, alkaliactivated slag concrete doped with powdered iron ore tailings was made into 100mm×100mm×100mm cube specimens, which was respectively cured 3 days, 7 days and 28 days. Then the compressive strength of .
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WEBOct 24, 2022 · Iron ore tailings (IOT) are a type of mining solid waste and cause many environmental and safety problems. The aim of this paper was to investigate the effect of highvolume ultrafine IOT on the mechanical properties and hydration mechanism of cementitious materials. ... Experimental investigations on the mechanical behavior of .
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WEBAug 1, 2023 · Iron ore tailings (IOTs) are a byproduct of the iron ore beneficiation process and are a significant source of solid waste [13, 14]. ... Feasibility study of developing green ECC using iron ore tailings powder as cement replacement. J. Mater. Civ. Eng., 25 (7) (2013), pp. 923931. View in Scopus Google Scholar [32]
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WEBJul 1, 2013 · The iron ore tailings–based cementitious composite with wt.% graphene shows an extremely high flexural strength of MPa at 3 days, which is % higher than that of the iron ore ...
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WEBDec 31, 2015 · The iron ore tailings aggregates concrete exhibited a good mechanical strength and even in the case of compressive strength, there was an improvement of % over conventional aggregates ...
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WEBSolid waste management is a critical issue worldwide. Effectively utilizing these solid waste resources presents a viable solution. This study focuses on Iron ore tailings (IOTs), a solid waste generated during iron ore processing, which can be used as supplementary cementitious materials (SCMs) but have low reactivity, hindering their largescale .
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WEBMar 4, 2021 · In this regard, waste marble powder used a filler material replacing a smaller constant portion of cement, dumped iron ore tailings (IOT) were used as a partial replacement for fine aggregate in ...
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WEBIron ore tailing is a major solid waste requiring advanced recycling methods because ore tailing powder is polluting air and water resources. For instance, about 300 million tons of tailings are disposed yearly in 1229 iron ore tailings dams in the Hebei province in China. Iron ore tailings can be recycled as functional materials because these tailings are .
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WEBPublish Date: 25 June 2022. Abstract. Iron tailings is one of the main solid waste produced in the process of iron ore development, and is also an important secondary resource. The common ways of comprehensive recovery and utilization of iron tailings resources at present are described in detail from five aspects: In terms of the recovering ...
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WEBNov 1, 2023 · Iron ore tailings (IOTs) was the residual solid waste that remained after the extraction of iron from iron ore [1,2], which was typically deposited in tailings ponds. Leakage or spillage from the tailings pond can result in the release of harmful substances into the surrounding soil, groundwater, and rivers, causing contamination of water and ...
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WEBMar 29, 2021 · Onitiri and Akinlabi 4 used 20% by volume of iron ore tailings as maximum amount in the investigated composites. ... A. Mechanical properties of iron powder filled high density polyethylene ...
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WEBNov 25, 2023 · Iron ore tailings (IOTs) are byproducts of the iron mining industry that have gained significant attention in recent years due to their potential for comprehensive utilization. ... Aluminum powder is the most commonly used ing agent in the production of AAC, and lime hydration provides the necessary alkaline environment for .
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WEBXRD pattern [36] According to [35], the iron tailing powder's Xray diffraction (XRD) pattern, the primary mineral phase of the iron tailing powder is quartz. SEM analysis of the morphology of iron tailings powder revealed that after mechanical grinding, there are many small particles as well as some coarse particles with irregular shapes. III.
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WEBNov 15, 2023 · The limited cementitious activity of steel slag (SS) powder restricts its largescale utilization as a replacement material for Portland cement and even more so for inert iron ore tailings (IOT). The microIOT (MIOT) were utilized as additives to improve the compressive strength and hydration degree of a binary system containing SS and PC. .
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WEBSep 8, 2022 · When compared to reference concrete, the TS shown by the concrete with iron ore tailings aggregate improved by % with age . However, because of the greater fines content, the concrete with iron ore tailings aggregate would need more water to mix, which weakens the link between the aggregate and cement paste, and lowers the TS .
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WEBAbstract. In order to study the influence rule and mechanism of iron ore tailing powder (IOTP) replacing cement in UHPC, the influences of different specific surface area and dosage of IOTP replacing cement on its strength and liquidity were tested. Moreover, the pore structure and hydration products morphology of UHPC were tested by MIP and ...
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WEBMay 18, 2023 · Iron tailings powder (ITP) is a kind of solid waste, which pollutes the environment, without any treatment. The appliion of ITP in cement concrete is a good choice. In this study, the influence of ITP on the flowability, compressive strength, chloride ion permeability and the attenuation of the performance of cement concrete during .
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WEBDec 11, 2023 · Steel was the fundamental material for industrial development, and the steel industry's growth was linked to the separation of mining and sorting of vast iron ore resources [1, 2].Over the past few decades, China's iron and steel industry has rapidly developed, leading to an annual discharge of over 6 billion tons of iron tailings .
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WEBDec 1, 2011 · Giri et al. [6] and Sakthivel et al. [14] synthesized magnetite powder out of iron and silica that is recovered from iron ore tailings, whereas Li et al. [10] demonstrated possibility of preparing ...
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WEBDec 15, 2022 · The iron ore tailings (IOTs) (< mm) were purchased from Laizhou Iron Mine in China. Main chemical composition of IOTs are shown in Table 1. Portland cement (PO ) was manufactured by Building Materials Co., Ltd. ... On the basis of hydration by amorphous SiO 2 and Al 2 O 3 on the surface of ultrafine iron tailings .
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WEBDec 4, 2021 · The aim of this research is to test the characteristics of concrete by substitute fine aggregate with iron ore tailings and partial glass powder as in the place of cement. Concrete with waste products such as glass powder and iron ore tailings offer technical, economic and environmental advantages. In this experimental investigation, glass .
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WEBMar 29, 2024 · （2）Iron tailings powder: iron tailings are taken from a tailings reservoir in Hebei Province, China, its main chemical components are shown in Table 3, and the phase analysis is presented in Fig. planetary ball mill (XQM4) was used to grind the iron tailings, the mill speed was set to 360 r/min, the grading of the grinding ball was .
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WEBMar 1, 2019 · The Role of Iron Tailing Powder in UltraHighStrength Concrete Subjected to Elevated Temperatures. Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultrahighperformance concrete (UHPC). However, the performance of UHPC with the addition of ITP after..
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WEBDOI: / Corpus ID: ; Study on waterrepellent and corrosionresistant properties of cement mortar using superhydrophobic iron ore tailings
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WEBOct 14, 2017 · ECC Using Iron Ore Tailings Powder as Cement . Replacement" Journal Of Materials In Civil . Engineering 25:923931(2013) Citations (3) References (13)
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WEBApr 1, 2017 · The results show that the activity of iron tailings changes unobviously after reaching a certain fineness; Iron tailings with lower activity primarily have physical filling effect under standard ...
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WEBMar 1, 2024 · DOI: / Corpus ID: ; Effects of siliceous iron tailings powder on performances of interface transition zone in concrete article{Cheng2024EffectsOS, title={Effects of siliceous iron tailings powder on performances of interface transition zone in concrete}, author={Yunhong Cheng and .
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WEBNov 10, 2020 · Iron ore tailings (IOT) are discharged as waste after the beneficiation process to concentrate iron ore, which has triggered a series of environmental problems. ... [23] found that IOT powder decreased the compressive strength but that the strength was similar to that of plain cement paste with increasing curing age. Han et al. ...
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WEBJul 31, 2022 · Rishu Jain, A. K. Singhai (2016) "Effect on Geotechnical Properties of Clayey Soil Stabilized with Iron Ore Mine Tailing and Ground Granulated Blast Furnace Slag". Volume 4, Issue 6, ISSN:
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