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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WEBMay 18, 2023 · To study the role of glass powder and iron ore tailings combination in concrete. The properties such compressive strength, flexural strength, tensile strength and also durability parameters likely ...
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WEBFeb 14, 2024 · Solid 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 .
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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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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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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 ...
WhatsApp: +86 18203695377![[PDF] Research on iron ore tailing improving Compressive .](/sqtr3ga/340.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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WEBMay 10, 2019 · The iron ore tailings (IOT) used in this work were collected from four Class III high environmental risk iron ore tailingsdams [26]. These (Fig. ) were selected based on the associated social and environmental potential risks, as well as economic relevance, as described in the dams inventory of the Minas Gerais State [27]. All four .
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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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WEBSep 1, 2020 · 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 . Expand. 2. PDF. Save. Study on Properties of Concrete with Iron Ore Tailing and Glass Waste.
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WEBMar 16, 2021 · The use of iron tailing powder (ITP) could be considered an ideal alternative cementitious material in concreterelated appliions, because of its abundant storage and lowcost . Meanwhile, the outstanding pozzolanic reactivity [ 21, 22 ] and the filling effect of ITP particles enable it to replace cement partially, thereby reducing the .
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WEBMay 28, 2022 · 1. Introduction. The continuous development of mineral resources forms many tailings, which is one of the rich solid waste resources. The accumulation of tailings pollutes the environment and poses a threat to the safety of surrounding people and buildings [1,2].Iron tailings (IOTs) account for the most significant proportion of the total .
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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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WEBDOI: / Corpus ID: ; Study on waterrepellent and corrosionresistant properties of cement mortar using superhydrophobic iron ore tailings
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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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WEBApr 1, 2021 · To study the role of glass powder and iron ore tailings combination in concrete, The properties such compressive strength, flexural strength, tensile strength and also durability parameters likely ...
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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 .
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WEBPDF | On Jan 1, 2018, Lin Yang published Preparation of UHPC with cement replaced by richsilicon iron ore tailing powder | Find, read and cite all the research you need on ResearchGate
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WEBMar 29, 2024 · Siliceous iron tailings powder is used as a mineral admixture for concrete. • The iron tailings powder complies the CH crystal orientation in ITZ.
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WEBApr 1, 2021 · Two recent tailing dam failures in Brazil have caused unmeasurable environmental, social and economic damages. This study evaluated the use of iron ore tailings (IOT) as a source of silica (SiO 2) to produce an alternative form of sodium silie (SS) for use as an activator in onepart geopolymer binders. The novel SS was .
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WEBMay 27, 2022 · The main chemical component of highsilicon iron tailings (HSITs) is SiO2; HSITs also include some oxides such as Al2O3 and CaO. Mechanical activation can reduce the particle size of HSITs and enhance their pozzolanic activity such that they can be used as a type of mineral admixture for cementbased materials (CBMs). This study aims to .
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WEBJan 15, 2020 · Iron ore tailings (IOTs), as a mineral waste generated from iron ore processing, are discharged annually with the rapid global development of iron and steel industries ... Changsha Tianchuang Powder Technology Co., Ltd., China) operating at a frequency of 50 Hz, a power of kW and a rotation speed of 500 rpm. ...
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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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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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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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WEBDec 1, 2023 · b)Iron ore tailings. The local industries deposited iron ore tailings, which were then used to supplement fine aggregates partially. Conventional fine aggregate (river sand) was replaced with 30% volume of iron ore tailings that had passed through the 600micron sieve to achieve this.
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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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WEBDOI: / Corpus ID: ; Iron ore tailings as a supplementary cementitious material in the production of pigmented cements article{Magalhes2020IronOT, title={Iron ore tailings as a supplementary cementitious material in the production of pigmented cements}, author={Luciano Fernandes de .
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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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