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iron ore tailing (IOT) as fine aggregate would turn this waste material into valuable resources, reduction in the strain on the supply of natural sand, and economy in concrete production. World production averages one billion metric tons of raw ore annually.
2019-7-31 · Water Sand Cement Fly ash Slag powder Silica fume Water reducer Steel ber Iron tailing sand Quartz sand River sand 150 155 160 165 170 175 180 185 190 195 200 Compressive strength (MPa) 7 28 90 Curing time (d) (a) Compressive strength Iron tailing sand Quartz sand River sand 20 22 24 26 28 30 32 34 36 38 40 Flexural strength (MPa) 79028 Curing ...
2021-7-13 · C2 (10% Iron ore tailing) 20 C3 (20% Iron ore tailing ) 16 C4 (40% Iron ore tailing) 10 C6 (80% Iron ore tailing) 4 3.3 Compressive Strength Compressive tests were conducted on 150 mm size concrete cubes in accordance with the specifications of Bureau of Indian Standards. The test results are given in Table 8.
Research on iron ore tailing improving Compressive Strength of Alkali-activated Slag Foamed concrete Li Junzhe1,a, Tian Yuze1,a, Sun Qiubai1,a and Pan Changsheng2,a. 1. University of science and technology Liaoning, Anshan City, Liaoning Province, China.
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 cured for 1, 2, 3, 7, 14 and 28 days.
The main mineral component of HuNan ChenZhou iron ore tailings is quartz, fluorite, calcite, pyroxene, etc. The average particle size of the tailings is 0.15mm, -200 for the purpose of 6.30 percent. Using the tailings as the aggregate, 42.5R ordinary cement as the gelled material, HTD-1 as foaming agent and other addition agent for prepared ...
2018-7-11 · 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.
2020-8-14 · Keywords: Self- compacting concrete, Iron Ore Tailings, Red Mud Introduction Self-compacting concrete (SCC) is an innovative concrete which can ... though left over iron ore tailing contains 20-30% of iron, further extraction from it will be costly. The composition of tailings is directly dependent on
2020-5-23 · Iron ore tailings. A number of representative iron ore tailing samples were acquired from different locations of the dry tailing disposal areas (cf. Fig. 2).As illustrated in Fig. 3, the tailings were loosely dumped as piles; thus, their sampling did not necessitate any particular practice and merely involved filling bags with a hand shovel.A total number of 16 tailing …
2019-7-1 · of iron ore tailing concrete and bottom ash concrete. III. METHODOLOGY A. Literature Review B. Procurement of Materials Ordinary Portland Cement, Coarse Aggregate, Poabs Msand, Iron Ore Tailing (from Lakya Dam site, Karnataka), TABLE.3Bottom Ash (from Hindustan News print Ltd., Kottayam), Super Plasticizer (Master Glenium Sky 8233).
IOT is a waste product generated from the production of iron ore and disposed to land fill without any economic value. Concrete mixtures containing different amount of IOT were designed for grade C30 with water to cement ratio of 0.60. The percentage ratios of the river sand replacements by IOT were 25%, 50%, 75% and .
Effects of iron ore tailings on the compressive strength ...
The research on whether can iron ore tailing improve the compressive strength of alkali-activated slag foaming concrete is conducted. The experiment shows that too little or too much powder from iron ore tailing will reduce the compression strength of alkali activated slag concrete, when powder from iron ore tailing achieving optimal amount, the compression...
2021-3-11 · iron ore was 2,850 million tons (approx.) with an Indian contribution of around 230 million tons. 2. The unavailability of cost-effective technology for the extraction of iron ore leads to the generation of a huge amount of waste. 3. The stripping ratio in Indian iron ore mine ranges from 1–3:1. 4. Tailing waste is the
2019-7-1 · Figure 1: Iron ore tailing 40. Concrete cubes and reinforced concrete beams were cast with different percentages of sand replacement by iron ore tailing and tested to determine the cube compressive strength and flexural strength. The mix proportions for M20 concrete were designed [4] and used for both cubes and beams. 100. II. EXPERIMENTAL WORK
2020-11-10 · Iron ore tailings (IOT) are mining waste obtained during the beneficiation process to concentrate iron ore, . The discharge capacity of tailings in China increases every year, accounting for more than 50% of the world''s tailings discharge. The storage of IOT accounts for nearly one-third of all kinds of tailings.
2019-4-21 · In the present study Iron Ore Tailings (IOT) procured from Kudremukh Lakya Dam site (KIOCL Ltd.) are used as partial replacement to fine aggregates at levels of 10, 20,30,40,50 percent and the basic material properties, strength parameters are studied.
The raw materials used in the test included the steel slag (SS), iron ore tailings (IOT), GBFS, cement clinker (CC), flue gas desulfurization gypsum (FGDG), and others. (1) SS. The SS used was basic hot steaming steel slag which com-plies with the Chinese National Standard GB/T 20451-2006. The chem-ical compositions of steel are shown in Table 1.
2021-11-25 · Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This …
The results indicate that concrete workability decreased with a rise in the content of iron ore tailing-alccofine and that the average compressive strength was 70, …
2014-9-30 · An evaluation of the Itakpe iron ore tailings (IOT) for concrete production has been carried out using the material to replace sand and cement, in proportions of 5 % up to 30 %, and curing for periods 90 days in water. Characterization of the material showed that it has pozzolanic properties, and can be used as a retarder for hot-weather concreting.
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 ...
Abstract In this paper, the characterisation of iron ore tailings (IOT) was carried out to examine its use as a supplementary cementitious material (SCM) to produce coloured composite cements. The IOT was heat treated, and ten different mixtures were prepared, substituting Portland cement for 10, 20 and 30 wt%. The IOT presented the sum of oxides of silicon, aluminium and iron …
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.
2021-3-31 · Cementitious activity of iron ore tailing and its utilization in cementitious materials, bricks and Construction and Building Materials ( IF 6.141) Pub Date : 2021-03-31, DOI: 10.1016/j nbuildmat Na Zhang, Binwen Tang, Xiaoming Liu
2020-10-19 · investigation on the Iron ore tailing based interlocking paver blocks and experimental values shown that 5 to15% usage of iron ore tailing increases the compressive strength than conventional concrete. Shetima et al. [15] carried out the study on the replacement fine aggregate by iron ore tailing.
2015-9-7 · 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 11.56% over conventional aggregates concrete.
2021-2-12 · used. For the tailings concrete being studied, iron ore tailings were used together with the cement to make the new concrete. The iron ore tailings were obtained from Mount Gibson Iron Extension Hill Operations in Perenjori of Western Australia (WA). The particle–size distribution curve of the original tailings as obtained is shown in Figure 1.
2019-4-21 · S/S and 28 days cured mine tailing specimens made with composite binders containing TM/10/0/0, TM/5/0/20, TM/10/0/40 and TM/0/10/40 significantly impaired the solubility of all contaminants investigated and proved successful in fixing metals within the matrix, in addition to achieving adequate
work examines the possibility of using Glass powder and iron ore tailing as a partial replacement of cement and fine aggregate in concrete. In the present study Glass powder and Iron Ore Tailing ( IOT ) are partially replaced by 10%, 20%, 30% and 40% tested for its compressive, flexural strength for 7, 28 and 56 days of curing and
Abstract Incorporating waste by-products in concrete is one of the critical approaches for sustainable development. Particularly, iron ore tailings (IOT) as ordinary industrial solid waste in China is discharged and deposited. This review is a recapitulation of the material characteristics of IOT and its effects on the workability, mechanical properties, and durability of concrete.
2021-6-7 · (ii) iron tailings sand, used as fine aggregate, particle size ranging from 0.16 mm to 4.75 mm, is produced by grinding and filtrating of iron mineral (iii) iron tailing powder as concrete mineral admixture, of particle size <0.16 mm. With the development of iron ore beneficiation, the size of IOT particle is getting smaller and smaller.
The iron ore tailings were characterized according to their chemical, mineralogical, environmental, and physical properties. Subsequently, the tailings were chemically stabilized using cement, lime, or steelmaking slag as binder. The tailing-cement, tailing-lime, and tailing-slag mixtures studied consisted of 1, 2, 5, and 10% binder content, each.
To improve the resource utilization of recycled aggregate concrete (RAC) and make use of the unique pozzolanic activation characteristics of iron ore tailing (IOT), the constitutive curves of tailing recycled concrete (TRC) before and after carbonization were analyzed theoretically, experimentally and microscopically. Firstly, according
To improve iron tailings utilization, the properties of precast concrete with iron tailing powder as mineral admixture were investigated by measuring the compressive strength and chloride ion ...
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