pdf iron ore in concrete

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Utilization of iron ore tailings with high volume in green concrete

Abstract. In this study, the potential of converting iron ore tailings (IOTs) into sustainable building materials was explored. IOTs were combined with fly ash (FA) and ground granulated blast-furnace slag (GGBFS) to prepare IOTs-based supplementary cementitious materials (SCMs). A concrete mix using IOTs-aggregate was also …

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Evaluation of iron ore tailings as replacement for fine aggregate in

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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Environmental impact, durability performance, and interfacial

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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Strength characteristics of iron ore tailing concrete

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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Evaluation of iron ore tailings as replacement for fine …

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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[PDF] Eco-friendly cementless concrete from hazardous iron ore …

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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Utilisation of iron ore tailings as aggregates in concrete

Sustainable handling of iron ore tailings is of prime concern to all stakehold-ers who are into iron ore mining. This study seeks to add value to the tailings by utilis-ing 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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(PDF) Effect of Partial Replacement of Sand by Iron Ore …

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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Concrete Made with Iron Ore Tailings as a Fine …

concrete made from abandoned iron ore tailings in Iraq, and the ﬁndings showed that it performed better than regular concrete and displayed greater compressive strength and …

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Effect of incorporation of rice husk ash and iron ore tailings …

Findings showed that the performance of the concrete with 35% replacement of iron ore tailings is basically equivalent to that of natural sand concrete. Hence, it can be utilized in engineering ...

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Utilisation of iron ore tailings as aggregates in concrete

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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[PDF] Utilizing Iron Ore Tailing as Cementitious Material for …

In this research, iron ore tailing (IOT) is utilized as the cementitious material to develop an eco-friendly ultra-high 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.

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Technical and Environmental Feasibility of Interlocking Concrete …

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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Evaluation of the Iron Ore Tailings from Itakpe in Nigeria as Concrete …

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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(PDF) A Feasibility Study on the Mechanical Properties of Concrete …

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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(PDF) Iron Ore Tailings as Partial Replacement for Fine …

40% optimal replacement. [36] examined the Evaluation of iron ore. tailings as a replacement for fine aggregate in concrete. Concrete mixtures containing 25, 50, 75, and IOT. as river sand ...

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[PDF] Evaluation of the Iron Ore Tailings from Itakpe in …

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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(PDF) Effect of dumped iron ore tailing waste as fine …

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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(PDF) Strength and Microstructure of Concrete with Iron Ore …

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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[PDF] Life Prediction of Iron Ore Tailings Concrete under …

DOI: 10.1155/2022/8028009 Corpus ID: 249035777; Life Prediction of Iron Ore Tailings Concrete under Freeze-Thaw Cycle Based on Weibull Distribution @article{Han2022LifePO, title={Life Prediction of Iron Ore Tailings Concrete under Freeze-Thaw Cycle Based on Weibull Distribution}, author={Jie Han and Chun Fu and …

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(PDF) Utilizing Iron Ore Tailing as Cementitious Material for …

In recent years, many scholars have studied the mechanical properties of concrete prepared by iron tailing sand, and there are many reports on the preparation of high-performance concrete by iron ...

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An evaluation of iron ore tailings characteristics and iron ore

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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(PDF) Recovering Iron from Iron Ore Tailings and Preparing Concrete …

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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(PDF) Utilisation of iron ore tailings as aggregates in concrete

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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Utilisation of iron ore tailings as aggregates in concrete

The utilisation of iron ore tailings as aggregates in concrete could have positive environmental implications to the mining companies and the mining …

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(PDF) Development of sustainable concrete using iron ore …

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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(PDF) UTILIZATION OF IRON ORE TAILINGS AS …

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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An evaluation of iron ore tailings characteristics and iron ore

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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[PDF] Utilisation of iron ore tailings as aggregates in concrete

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 …