Iron ore tailing (IOT) is the wastes generated during the salutariness process of iron ore concentration. These wastes are abundant in quantity, which can be …

tons of magnetite are the total recoverable resources of iron ore in India. Iron ore usage worldwide is increasing at a 10% rate [36]. The data on iron ore output from 2000 to 2018 are shown in ...

rials and the results were compared with the tailings concrete. It was found that the iron ore tailings may be utilised for complete replacement for conventional aggregates in …

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 valuable elements, the ...

To obtain iron mineral from ore, abundant iron ore tailings (IOT) is generated in separating [6]. The detailed process is shown in Fig. 1. According to the 2018–2019 development report of China Bulk Industrial Solid Waste Comprehensive Utilization Industry, the total tailings volume has reached 1.211 billion tons, including IOT, copper ...

In this paper iron tailing sand (TS) are used as aggerate to develop ultra high-performance concrete (UHPC). The mix proportion of UHPC is designed and TS were added by 25%, 50%, 75% and 100% (wt ...

Use of iron ore tailings for producing concrete. In recent years, the demand for concrete in the construction industry has increased significantly with the increasing investment in infrastructure sector in China. This leads to the depletion of sand and some other natural resources mainly due to irrational overexploitation.

In this investigation an attempt is made to utilize gold ore tailings as a partial substitute for river sand in producing concrete. River sand is replaced with 5%, 10%, 15%, 20% and 25% gold ore tailings and the resulting fine aggregates were used in concrete mix and it is compared with conventional concrete.

An evaluation of iron ore tailings characteristics and iron ore tailings concrete properties. Construction and Building Materials, 286 (2021), Article 122968. ... H. R. Arjun and George Ignatius, "Utilization of Iron Ore Tailings for the Production of Fly Ash | GGBS-Based Geopolymer Bricks" Journal of Advanced Manufacturing Systems,vol. 16 ...

mortar and concrete use as ne aggregate in concrete 34,35,42,63-65,71-78. ... The use of iron ore tailings with a high concentration of . silica can be advantageous when the objective is to produce .

Utilization of IOT in cementitious materials, bricks and concrete are overviewed. • Long-term durability and environmental …

The use of iron tailings as fine aggregates decreases the pore size and improves the interfacial transition zone of concrete [10,11]. Therefore, the concrete prepared with appropriate proportion of iron tailings fine aggregates shows superior impermeability, lower water absorption, smaller drying shrinkage, reduced carbonation …

Abstract: In this research, iron ore tailing (IOT) is utilized as the cementitious material to developan eco-friendly ultra-high performance concrete (UHPC). The UHPC mix is …

Under strong tectonic compression, the integrity of ore and rock is damaged and the strength is reduced. Before the introduction of wet shotcrete technology in mines, all roadway support adopts pipe seam anchor and steel mesh support. ... Experimental study on durability of concrete with iron tailings. Concrete world (04):68–70. Fernando CA ...

Innovative methodology for comprehensive utilization of iron ore tailings Part 2: The residues after iron recovery from iron ore tailings to prepare cementitious material ... A. Professor, A Feasibility Study on the Mechanical Properties of Concrete with Iron Ore Tailings (IOT), 9 (2019) 24050-24054. Google Scholar [72] B.M. Sunil, L.S ...

When evaluating the mechanical properties, the results show that soil–cement mixtures with iron ore tailings can be an excellent alternative as a pavement material. The addition of 10% and 20% of iron ore tailings showed a decline in the compression resistance, but all the mixtures met the required strength standard for a …

The structural properties of iron tailings must be verified for them to be used in reinforced concrete structures. In this study, finely ground iron tailings powder was used as an admixture, and iron tailings gravel and iron tailings sand were used as the coarse and fine aggregates, respectively, to prepare full iron tailings concrete (FITC), which …

Keywords: iron ore tailings; ultra high-performance concrete (UHPC); workability; autogenous shrinkage; micro-structure 1. Introduction Ultra-high-performance concrete (UHPC) is a new type of cement-based material with high mechanical properties (compressive strength and flexural strength of over 120 MPa and 20 MPa, respectively) …

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 …

Shettima et al. [10] evaluated the application of iron ore tailings (IOT) as a fine aggregate replacement for concrete. Concrete with 25%, 50%, 75% and 100% substitution of IOT was prepared. The mechanical properties obtained were higher than those of conventional concrete at all replacement levels.

It was found that the iron ore tailings may be utilised for complete replacement for conventional aggregates in concrete. The iron ore tailings aggregates concrete …

The article reviews the results achieved by the predecessors. In addition, outlines the method of activation of iron tailings and the influence of its strength and durability as a …

The chemical components of iron ore tailings are similar to the cement and other SCMs [11] and the physical characteristics are similar to natural sand [36]. Hence, iron ore tailings may be utilized in the preparation of building materials and is feasible. It has been demonstrated that iron ore tailings can be applied to produce concrete

In these studies, iron, lead–zinc, copper, molybdenum, gold, coal, magnesite, boron, and marble mine tailings were used in the concrete mixture instead of both fine aggregate and cement. Each of these tailings has different chemical properties (Fig. 2). The concrete properties examined in these studies are given in Table 1.

Tailings are one of the largest solid wastes in stock at present. In order to improve the comprehensive utilization rate of tailings, especially to solve the problems of fine-grained tailings treatment, the concrete composite admixture was prepared by using iron tailings powder and slag powder. In order to study the influence of iron tailings …

Iron tailings is a by-product of iron ore with the production rate of 1:2.5 to 1:3, which is usually dependent on mining condition (Ma et al., 2016). It was reported that its total amount accounted for about 39% among all tailings including various metallic and non-metallic tailings (Jiang et al., 2022).

The tailings are used instead of fine aggregate or cement substitution. • The particle size distribution, porosity, and chemical contents of the tailings affect the …

Study on the Utilization of Iron Tailings in Ultra-High-Performance Concrete: Fresh Properties and Compressive Behaviors Yunqi Zhao 1,2, Xiaowei Gu 1,2,*, Jingping Qiu 1,2, Weifeng Zhang 1,2 and ...

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 76.82%.

The feasibility of using kimberlite tailings as aggregates in concrete was assessed. Compressive strength and selected durability tests were carried out on concretes made using various replacement levels (0, 40, 60 and 100%) fine and/or coarse blended crushed andesite and kimberlite tailings as aggregates.