هل ستصبح شريكنا القادم ؟
For iron ore and concrete producers, using iron ore tailings as fine aggregate to produce concrete is an effective method of recovering iron ore tailings. Iron tailings can be made into iron tailing sand, which is mixed with conventional aggregates such as artificial sand to produce concrete that meets demand, such as C50 concrete.
اقرأ أكثر
According to GB/T 31288–2014 [27] and YB/T 4561–2016 [28], there are three types of IOT: iron tailings powder, iron tailings super fine sand, iron tailings fine sand. However, in most previous researches, IOT mainly covers three categories: (i) iron tailings rock, used as coarse aggregate, of particle size >4.75 mm, is produced by ...
اقرأ أكثر
Cement and aggregate can be simultaneously replaced in concrete with iron ore tailings of various particle sizes. ... Utilization of iron ore tailings as fine aggregate in ultra-high performance concrete. Construct. Build. Mater., 50 (2014), pp. 540-548. View PDF View article View in Scopus Google Scholar
اقرأ أكثر
DOI: 10.14359/51720305 Corpus ID: 213665269; Characterization of Iron Ore Tailings as Fine Aggregate @article{Oritola2020CharacterizationOI, title={Characterization of Iron Ore Tailings as Fine Aggregate}, author={Sikiru Folahan Oritola and Abd.
اقرأ أكثر
All the specimens with iron ore tailings replacement have higher compressive strength and less deterioration percentage than control. A higher resisting capacity of 60.3 MPa was observed for MBS2 specimens in which a moderate replacement of 30% iron ore tailings was used for fine aggregate.
اقرأ أكثر
by complete replacing fine aggregate by Iron ore tailings, and GGBS as partial substitute to cement at 10%, 20%, 30% and 40%. The cubes were casted and their compressive strengths were evaluated at 7, 14 and 28 days. As the percentage increased the strength is also increased but only up to 30% ...
اقرأ أكثر
This research aims to replace silica sand with iron sand (sourced from iron ore tailings) to develop HS-ECC with better mechanical properties while balancing …
اقرأ أكثر
To investigate the application of iron tailings in cement-based materials as fine aggregate and mineral admixture, six iron tailings sands were selected from different places of origin, and the methods of acid and alkali activation were adopted to increase the activity of tailings powder. The strength of mortar was evaluated and the composition …
اقرأ أكثر
The results show that adding more iron ore tailing and bottom ash to concrete mixes increases both the compressive and tensile strength. The ideal replacement levels of these materials were found to be 60% iron ore tailing, 15% bottom ash, and 25% fine aggregate. KeywordsIron ore tailings(IOT) and Bottom ash(BA) I. INTRODUCTION
اقرأ أكثر
Iron ore tailings (IOT), as one of the main mining wastes, is produced after multiple crushing and magnetic separation on iron ore [15]. In China, stored IOT has reached 5 billion tons and is growing steadily at a rate of over 0.3 billion tons per year, whereas only 20 % of them has been reused [16] .
اقرأ أكثر
Iron ore tailings (IOT) are the by-products of iron ore beneficiation, and these tailings are disposed of in several tons annually in quarries, landfills, and tailings dams, causing environmental issues. Various researchers have attempted to study the properties of IOT and the use of them in concrete as a building material.
اقرأ أكثر
For example, iron ore tailings was used by many researches to substitute fine aggregate in concrete [19][20] [21] [22], the findings of these investigations showed that concrete formulated with ...
اقرأ أكثر
Characterization of iron ore tailings as fine aggregate. Iron ore tailings (IOTs) are common industrial solid waste products which are generated in enormous quantities during the production process of iron ore. By visual observation, this material shows some similarity with natural sand (NS); it was therefore desired to characterize the IOTs to ...
اقرأ أكثر
Iron ore tailings (IOT) are one of the mining wastes obtained from the beneficiation process of iron ore concentrates. This paper presents an overview of the …
اقرأ أكثر
Cement and aggregate can be simultaneously replaced in concrete with iron ore tailings of various particle sizes. The mechanical properties and durability of …
اقرأ أكثر
In this research used iron filling as partial replacement fine aggregate at percent 5,10, and 15% by weight of fine aggregate and maintaining the ratio of water to cement at 40% and study observe … Expand
اقرأ أكثر
In the present investigation suitability of iron ore tailings (IOT) as an alternative to river sand for fine aggregate is examined. As part of this study, extensive experimental …
اقرأ أكثر
Effect of iron ore tailings as fine aggregate on pore structure of mortars has been studied in this paper. The purpose is to investigate, as fine aggregate, comparing to natural sand, whether the ...
اقرأ أكثر
Iron ore tailing (IOT) application as fine aggregate in interlocking concrete blocks was examined in the research. Compared to traditional interlocking paver blocks, …
اقرأ أكثر
The present study looks for the feasibility of preparing UHPC with iron ore tailings (IOT for short) as fine aggregate. To enhance outstanding high performances, some influences on UHPC mortars ...
اقرأ أكثر
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.
اقرأ أكثر
The present study investigates the effects of utilizing dumped waste as a practical resource for making concrete. In this regard, waste marble powder used a filler material replacing a smaller constant portion of cement, dumped iron ore tailings (IOT) were used as a partial replacement for fine aggregate in different proportions. Since …
اقرأ أكثر
A concrete mix of M20 grade were prepared by replacing fine aggregate with iron ore tailing at replacement level 15%, 25%, and 35% and the optimum replacement percentage was obtained. Further ...
اقرأ أكثر
Using iron ore tailings (IOTs) as the main aggregate for concrete will not only save crushed stone mining but will also reduce the environmental impact of IOTs. A discrete element model of concrete with realistic IOTs shape was developed using particle flow coding 3D technique. The accuracy of the numerical model was verified with the …
اقرأ أكثر
Effect of iron ore tailings as fine aggregate on pore structure of mortars has been studied in this paper. The purpose is to investigate, as fine aggregate, comparing to natural sand, whether the iron ore tailings can improve the pore structures of mortars or not. Pore structure parameters were measured with the instrument of MIP and calculated with …
اقرأ أكثر
Concrete Made with Iron Ore T ailings as a Fine Aggregate: A Step towards Sustainable Concrete Mohamed Moafak Arbili 1, Muwaffaq Alqurashi 2, *, Ali Majdi 3, Jawad Ahmad 4
اقرأ أكثر
Keywords: iron ore tailings; concrete; aggregates; compressive strength; indirect tensile strength; slump 1. Introduction Western Australia (WA) is endowed with a large reserve of iron ore. This has attracted a lot of iron ore mining activities for many years in the state. Iron ore resource is a very significant player of the economy
اقرأ أكثر
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
اقرأ أكثر
Experimental research on replacement of fine aggregate with iron ore tailing in concrete has shown reduced workability and compressive strength. 25–50% partial replacement has shown significant improvement on compressive strength of concrete. Iron ore tailing stabilized with 5–15% of other additives such as cement and lime is found to ...
اقرأ أكثر
Abstract – In this study, M20 grade of concrete was produced by complete replacing fine aggregate by Iron ore tailings, and GGBS as partial substitute to cement at 10%, 20%, 30% and 40%. The cubes were casted and their compressive strengths were evaluated at 7, 14 and 28 days. As the percentage increased the strength is also …
اقرأ أكثر
