DOI: 10.1016/J.CONBUILDMAT.2021.122968 Corpus ID: 233575872; An evaluation of iron ore tailings characteristics and iron ore tailings concrete properties @article{Zhao2021AnEO, title={An evaluation of iron ore tailings characteristics and iron ore tailings concrete properties}, author={Jiangshan Zhao and Kun Ni and Youpo …
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DOI: 10.1016/j.jobe.2023.106585 Corpus ID: 258231807; Utilization of iron ore tailings with high volume in green concrete @article{Zhang2023UtilizationOI, title={Utilization of iron ore tailings with high volume in green concrete}, author={Yannian Zhang and Zhijun Li and Xiaowei Gu and Moncef L. Nehdi and Afshin Marani and Lei V. Zhang}, journal={Journal …
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Iron ore tailings (IOTs) is a waste product generated from the production process of iron ore. In this study, IOTs is used as partial replacement for natural sand in the production …
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Effect of iron ore tailing on the properties of concrete. Feb 4, 2015 •. 3 likes • 702 views. Alexander Decker. 1 of 9. Download Now. Download to read offline. Effect of iron ore tailing on the properties of concrete - Download as a PDF or view online for free.
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Generally, large-size iron tailings of 0.5~4.75 mm are used as concrete aggregate, Lv et al. [6] employed iron ore tailing aggregates (IOTA) to replace normal aggregate (NA) in dam concrete. And ...
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Joaquim et al, and Mendes et al [24, 25] used iron ore tailings as fine aggregate to produce suitable quality concrete blocks (pavers). Fantes et al [26] incorporated iron residues into mortars ...
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silica fume, iron ore tailings, and more importantly, fibres' pres- ence helped the concrete to fill the pores effectively and maintain a low sorptivity value.
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used iron ore tailings from the iron quadrilateral in Minas Ge rais. The reported values were The reported values were 3.91, 0.94, 9.37, 3.61, and 7.80, i.e., much lower values than the other ...
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Concrete Made with Iron Ore Tailings as a Fine Aggregate: A Step towards Sustainable Concrete. September 2022. Materials 15 (18) DOI: 10.3390/ma15186236. …
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The major aim of this study is to evaluate IOT as replacement for river sand in concrete and compare with the result of conventional concrete. Concrete mixtures containing 25%, 50%, 75% and ...
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Regarding particle sizes, there are three types of IOT categories: iron tailings rock, produced by mechanical crushing of lowgrade ore and wall rock, with a granulometry above 4.75 mm and used as ...
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Figure 8: Mass loss rate of iron ore tailings recycled aggregate concrete during F-T cycle: (a) the dosage of RCA is 30%; (b) the dosage of RCA is 50%. 0 25 50 75 100 125 150 175 200 225
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Keywords: Self- compacting concrete, Iron Ore Tailings, Red Mud Introduction Self-compacting concrete (SCC) is an innovative concrete which can be placed and compacted under its own weight with little or no vibration effect and at the same time cohesive enough to be handled without segregation or bleeding.Adoption of SCC offers substantial ...
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The concrete with 10% glass powder & 30% iron ore tailings showed a higher strength compared to the conventional mix for 28 days. Concrete mix containing 10% GP and 30% IOT showed higher flexural ...
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Abstract Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5. The concrete were …
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Iron ore tailing (IOT) application as fine aggregate in interlocking concrete blocks was examined in the research. Compared to traditional interlocking paver blocks, …
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In this paper, the relative dynamic elastic modulus was used to define the damage factor, and the freezing-thawing damage model of iron ore tailings concrete was established based on Weibull ...
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concrete sample of 50% IOT recorded the highest compressive stre ngth of. 37.7 MPa at 28 days, an d the highest flexural strength of 5.5 MPa. compared to 4.7 M Pa for reference concrete. The ...
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Cement, fine aggregate and coarse aggregate are vital ingredients of concrete .An earnest attempt is made through this project to fulfill all the pre and post factor of M20 concrete by partial replacement of cement by copper ore tailing of 5%, 10%, 15%, 20%, 25% and sand by iron ore tailing of 10%, 20%, 30%, 40%, 50%.
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Kuranchie (2015) demonstrated that the application of iron ore tailings instead of natural aggregates results in stronger concrete, while geopolymer bricks comprising iron ore tailings and sodium ...
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Utilisation of iron ore tailings as aggregates in concrete. Francis Atta Kuranchie1*, Sanjay Kumar Shukla1, Daryoush Habibi1 and Alireza Mohyeddin1. Abstract: Sustainable …
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View PDF. Materials used in proportioning of concrete have significant impact on the properties of concrete produced. Iron ore tailings (IOTs) is a waste product generated …
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Characterization of the Itakpe iron ore tailings showed that it has pozzolanic properties, and can be used as a retarder for hot-weather concreting, and could be used to predict relationships of IOT-OPC concrete. An evaluation of the Itakpe iron ore tailings (IOT) for concrete production has been carried out using the material to replace sand …
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Normal strength concrete was designed based on water/cement ratio of 0.54 and cement content of 463Kg/m3 was used in preparing the fresh concrete. For each kind of Iron ore tailings concrete, four different types of concrete samples were produced.
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Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5.
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Download Free PDF. Utilisation of iron ore tailings as aggregates in concrete. Utilisation of iron ore tailings as aggregates in concrete. Francis Atta Kuranchie. 2015, Cogent Engineering ...
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PDF | Impact tests were conducted using a specially made drop hammer impact device on concrete specimens (C60–C90) containing lean iron ore from mine... | Find, read and cite all the research ...
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Under these conditions, the iron grade of the reduced iron powder was 92.30 wt %, and the iron recovery rate was 93.96 wt %. With respect to the original IOTs, the iron recovery was 78.79 wt ...
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Iron Ore Tailings (IOT) are the waste slag resulted from iron ore mines. Large amount of Iron Ore Tailings (IOT) have been generating every year posing serious environmental problems, large production of cement everyday resulting the emission of CO 2 and increase in the consumption of river sand for construction activities making the river beds over …
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Concrete containing iron ore tailings (IOT) enhances compressive and splitting strengths. • IOT concrete improves durability properties and resists …
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The major aim of this study is to evaluate IOT as replacement for river sand in concrete and compare with the result of conventional concrete. Concrete mixtures containing 25%, 50%, 75% and IOT as river sand replacement were prepared with 0.5 water-to-cement ratio (W/C).
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This article describes in detail the result of the complete replacement of natural materials with four industrial wastes—from iron ore processing, cellulose and pulp production, concrete production and demolition, and lime production—without changing the technological process nor creating new residues.
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Mining of iron sites are located at Itakpe and Aklaja in Kogi and Delta State of Nigeria respectively, where iron ore is in abundance in several million metric tons. Itakpe which was designed to ...
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The first mix was control, which is a conventional concrete designated as M0 (i.e. without iron ore tailings), and the other four mixes contained IOT. The river sand was replaced with IOT at replacements levels of 25%, 50%, 75% and and designated as M25, M50, M75 and M100 respectively.
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