The replacement of cement with IOTs results in 10–32% reduction in energy consumption and 29–63% reduction in carbon dioxide emissions in green ECC compared with typical ECC. Thus, the feasibility of producing greener ECC with significantly reduced environmental impact using IOTs, and maintaining the mechanical properties of typical ECC, is ...

Iron ore tailings are a common type of hazardous solid waste in China and have caused serious environmental problems, and the high cost of producing ultra-high …

The present work evaluated the possibility of using iron ore tailing as an addition to the partial replacement of the cement in mortars. The iron ore tailings were processed by drying in oven (48h at 105oC) and milling in a planetary mill (10min at 300RPM), obtaining medium grain size of 14,13 μm.

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 ... that the replacement of natural aggregate by Iron ore tailings

iron ore tailing as a partial substitute for Portland cement. Thus, a characterization of the material was carried out, after grinding, and tests in pastes to study the performance of mixtures containing 50% IOT. II. MATERIALS AND METHODS A. Materials The materials used in this research were cement, water and iron ore tailing.

The Iron Ore Tailings (IOT's) a waste product, with particle size range from (850μm - 75μm) obtained from Iron Ore Processing was utilized as fine aggregate to produce concrete. Based on British Standard (BS) guidelines, normal concrete mix was designed. Five types of concrete samples (C0, C1, C2, C3, and C4) were produced, with the ...

IJRET: International Journal of Research in Engineering and Technology. eISSN: 2319-1163 | pISSN: 2321-7308. UTILIZATION OF IRON ORE TAILINGS AS REPLACEMENT TO FINE AGGREGATES IN CEMENT CONCRETE ...

Raghunandan et al., made an attempt to utilize IOT and slag sand as a replacement for clay or natural sand for the production of steady geopolymerbrick. Expansion of geopolymer binder-oriented bricks with fly ash and GGBS has been evaluated. ... An evaluation of iron ore tailings characteristics and iron ore tailings concrete properties ...

Strength and Microstructure of Concrete with Iron Ore Tailings as Replacement for River Sand.pdf Available via license: CC BY 4.0 Content may be subject to copyright.

iron ore tailing additives in clinker and concrete, as replacement of sand in concrete, as siliceous materials in ceramics and autoclaved aerated concrete (Karpe et al., 2008). Aruna et al. (2012) demonstrated usage of iron tailings for paving blocks manufacture. They conducted laboratory

It has been demonstrated that iron ore tailings can be applied to produce concrete materials [11,31]. It is found that the mechanical property of engineered cementitious composites (ECC ...

Abstract. 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 utilized in many ways. In this manuscript, utilization potential of IOT as a resource and its adaptation in the replacement of different industrial raw materials have been discussed.

replacement of iron ore tailings in this study. Table 3 presents 7 kinds of concrete mix proportions, and the first mix was a controlled mix without iron ore tailings. The controlled mix was made for C35 grade. In the mixture, 10 %, 20 %, 30 %, 40 %, 50 % of fine aggre-gate (regular sand) were replaced with iron ore tailings, respectively.

Utilization of mine waste rocks and tailings in concrete as aggregates will help in sustainable . and greener development. The literature shows the potential use of iron ore tailings as a replacement of . natural fine aggregates. As natural sand reserves are d. epleting day by day, there is a need for substitution for . sand in concrete.

Studies [7,11,12,13] have shown that iron tailings sand could be used in concrete as sand replacement, and in order to maximize the effect of iron tailings sand in reducing environmental problems, cost and natural resources depletion, a replacement ratio was used in this study. A polycarboxylate superplasticizer of 1% was used as admixture ...

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 (wt.%, i.e., weight percentage) to replace natural river sand. Firstly, the influence of TS on the slurry behavior was carried out. The experimental result indicates that with the continuously increasing ...

Keywords: reuse of tailings, iron ore tailings, structural mortar 1. Introduction The mining sector is of great importance. It contributes strongly to the economy of Brazil. Iron is the main mineral extracted and exported. According to the Brazilian Mining Institute (IBRAM, 2018), 430 million tons of

Abstract: Iron ore tailing (IOT) is a waste product of Iron Ore after manufacture, the wastes are environmental unfriendly as it poses serious problem of disposal, but can be used as a replacement in concrete mixture. The aim of this research is to

Iron ore tailings have the potential to be used as fine aggregate because they are relatively inert and the particle size of the tailings is significantly larger than that of cement. This paper investigated the use of iron ore tailings to replace natural sand as fine aggregate and studied the impact that various replacement levels had on the

IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 UTILIZATION OF IRON ORE TAILINGS AS REPLACEMENT TO FINE AGGREGATES IN CEMENT CONCRETE PAVEMENTS B N Skanda Kumar1, Suhas R2, Santosh Uttam Shet3, J M Srishaila4 1 Assistant Professor, Department of Civil Engineering, DSCE, Bangalore, India 2 Assistant …

3. Test to Find the Optimum Mixing Amount of Iron Ore Tailings 3.1. Workability of Samples with Different Mixing Amount of Iron Ore Tailings. Let the bulk density of C30 concrete be 2400 kg/m 3, and let the mass ratio between iron ore tailings and natural sand be α.Here, the concrete without iron ore tailings was set as reference.

(2016) "Evaluation of iron ore tailings as replacement for finer aggregate in concrete", ELSERVIER, Construction and building Materials 120, Pg no. 72 – 79. [2] B N Skanda Kumar, Subas R, and et al, (2014) "Utilization of iron ore tailing as the partial replacement for the fine aggregate in the construction

Millions of tons of iron ore tailings (IOT); a by-product of iron ore processing, are disposed of every year in landfills, quarries, rivers, oceans among others thereby posing environmental problems. 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.

This paper reports a study on the reconstruction of broken Si-O-Si bonds in iron ore tailings (IOTs) in concrete. Limestone and IOTs were used to investigate the influence of different types of coarse aggregates on the compressive strengths of concrete samples. The differences in interfacial transition zones (ITZs) between aggregate and paste were analyzed by scanning electron microscopy …

The literature shows the potential use of iron ore tailings as a replacement of . natural fine aggregates. As natural sand reserves are d. epleting day by day, there is a need for substitution for . sand in concrete. A comprehensive overview of the published literature on the use of iron ore waste and .

This research is interested in use of iron ore tailing as sand in concrete and mortar. The successful utilization of iron ore tailing (IOT) as fine aggregate would turn this waste material into valuable resources, reduction in the strain on supply of natural sand and economy in concrete production. 1.2 Objective Partial replacement of iron ore ...

Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from high-silica residues.

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. The calculated packing density of different mixtures is consistent with ...

Dry and sludge iron-rich mining tailing (IOT) were studied as cement replacement. • Hydration, rheology and compressive strength were investigated. • The iron ore tailing favored hydration of the aluminate phases. • Rheological properties were affected by the morphology and content of …

River Sand is one of the basic ingredients used in the production of concrete. Consequently, continuous consumption of sand in construction industry contributes significantly to depletion of natural resources. To achieve more sustainable construction materials, this paper reports the use of iron ore tailings (IOT) as replacement for river sand in concrete production.

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 concrete. The iron ore tailings aggregates concrete exhibited a good mechanical strength and even in the case of compressive strength, there was an improvement of

Xiaoyan Huang et al (2013) [12] used iron ore tailings powder as cement replacement for developing green ECC (Engineered Cementitious Composite) and concluded that the replacement of …

The replacement of cement by 30% fly ash (FA), 50% ground granulated blast-furnace slag (GGBFS), 10% metakaolin (MK) and replacement of sand by 15% ground iron ore tailings (GIOT) led to the ASR- expansion to below 0.10%. Compared with replacement of cement, replacement of sand led to better performance.

An attempt is made with Iron Ore Tailings as a partial replacement of fine aggregate in the concrete. The main aim of this section is to present an overview of research work carried out by various researchers in the field of Iron Ore Tailings and replacement of fine aggregates. Sujing Zhao et al (2014) [10] investigated that replacement of ...