This study evaluated the stabilization of iron ore tailings (IOTs) with an alkali-activated binder (AAB) produced from sugar cane bagasse ash, hydrated eggshell lime, and sodium hydroxide solution.
1. Related Introduction. In China, the comprehensive utilization of iron tailings sand began in the 1990s. After years of experimental research, a relatively mature conclusion has been achieved in the use of iron tailings sand for the preparation of iron tailings concrete.
The specific gravity was found to be 2.807. Fine aggregate Natural river sand with maximum size of 4.75mm was used in this study. The specific gravity was found to be 2.64. Iron Ore Tailings Iron ore tailings are the materials left over after the beneficiation process of separating the valuable fraction from the worthless fraction of an iron ore.
Three kinds of concrete (ordinary concrete, concrete with iron tailings sand (ITS), and concrete with ITS modified by polypropylene fibers) were exposed to drying-wetting cycles in 5% Na2SO4 ...
Concrete made from IOTs and sugarcane bagasse ash is tested and their results are analyzed. The concrete mix is designed for M30 with a water-to-cement ratio (W/C) of 0.48. A total of 13 mixes are developed by replacing 0%, 10%, 20%, 30%, 40% and 50% of IOTs with sand, 0%, 5%, 10%, 15%, 20% and 25% with processed sugarcane bagasse ash (SBA) and ...
lower, indicating a chemical reaction occurred between the iron tailings and cement paste. Generally, the iron tailings sand with higher SiO 2 content and ner particles tend to have higher activity. In addition, the pozzolanic activity of iron tailings powder could be greatly promoted by chemical activation, especially by acid activation.
The Influence of Iron Tailings Powder on the Properties on the Performances of Cement Concrete with Machine-Made Sand. Lin Wang Gen‐fa Du +4 authors Xue-yong Liu. Materials Science, Engineering ... (the waste stone residue in the production of machine-made sand and stone processing) and iron tailings powder formed by mineral processing ...
Iron tailing powder and iron tailing sand were used to replace cement and quartz sand in UHPC. Mechanical properties, flexural toughness, durability and environmental …
Iron ore tailings (IOTs) is a waste product generated from the production process of iron ore. In this study, IOTs is used as partial replacement for natural sand in the production of normal …
Sand aggregate isone of the resource-consuming, fundamental, indispensable, and irreplaceablematerials for the construction of infrastructure projects such as buildings,roads, and bridges. Sand and gravel aggregate However,it is also a non-renewable resource, which has been exploited for thousands ofyears, causing gr…
Bauxite-rich tailings can be used in alum and shotcrete production. Copper-rich tailings can be turned into lightweight ceramics by sintering iron tailings mixed with fly ash and sewage sludge in paint making. Tailings can be used as additives for soil in road construction in the construction industry.
This study presents the shrinkage characterization and shrinkage-reducing efficiency of three different methods on iron tailings, sand concrete and river sand concrete. The internal humidity...
performance of iron, copper, and gold tailings in place of sand despite the varied proportion of these tailings. Fig. 1 and Fig. 2 show the maximum percentage replacements of sand with iron tailings and copper tailings as recommended by various authors respectively. Based on the maximum percentage replacement, it was suggested
Bond performance between deformed bars and concrete containing iron tailing sand exposed to high temperature. Structures, Volume 56, 2023, Article 104940 ... Mechanical properties and pore structure of recycled aggregate concrete made with iron ore tailings and polypropylene fibers. Journal of Building Engineering, Volume 33, 2021, Article 101572.
In addition, Feng et al. [84] observed that the drying shrinkage of concrete made of iron tailings sand and iron ore rock for grade C30 and C60 concrete were lower than NS concrete. A similar observation was carried out by Jia [85] for grade C50 concrete. As shown in Fig. 19, ...
The mechanochemically activated siliceous iron tailings replaced 10–40% of the cement in the concrete, and tests of the concrete's resistance to permeability, frost, and carbonation were ...
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 …
Semantic Scholar extracted view of "Utilization of tailings in concrete products: A review" by D. Adiguzel et al. ... Dolomite rock powder (the waste stone residue in the production of machine-made sand and stone processing) and iron tailings powder formed by mineral processing industry are solid wastes, which …
The increasing annual emissions of iron ore tailings have proved a great threat to the natural environment, and the shortage of natural river sand, as well as the pursuit of sustainable development materials, provides motivation …
Iron ore tailings used as replacem ent of sand in concrete (Cai et al. 2009), as siliceous materials in ceramics (Liu et al . 2009, Das et al . 2000) and autoclaved aerated concrete (Li et al .
How to make concrete aggregate from iron ore tailings? If the iron ore tailings are used as fine aggregate, a certain particle size is required. Coarse sand makes the concrete relatively dry, reduces viscosity, and has poor …
Generally, the sand made of tailings is better than the sea sand, because the latter one often contains salt and chloride ions, which is easy to make steel corrosion. ... And some iron ore tailings which contain much silicon and iron can also be used as iron and silicon corrective materials. 7. Raw materials to produce all kinds of bricks and ...
To address the problem of permeation of tailings pond initial dams rockfill dams, fiber-reinforced cement tailings sand-based grouting (FRCTG) material, which can be used for rockfill dam reinforcement, was prepared by selecting ordinary portland cement (OPC), iron tailings sand (ITS), basalt fiber (BF), fly ash (FA) and water as the raw materials.
lower, indicating a chemical reaction occurred between the iron tailings and cement paste. Generally, the iron tailings sand with higher SiO 2 content and ner particles tend to have higher activity. In addition, the pozzolanic activity of iron tailings powder could be greatly promoted by chemical activation, especially by acid activation.
Hou Y F [28] used iron tailing sand and river sand to produce concrete and found that as the fineness modulus of iron tailing sand increases, the strength of concrete with iron tailing sand is slightly higher than that of concrete with river sand. Wang W W's research [29] showed that at the same temperature, the cubic compressive strength of ...
ITS is the main component of industrial solid waste, of which there are about 2 billion metric tons in China. A large number of ITS not only occupy land resources and pollute the environment but also pose major security risks. This study, based on a road resurfacing project in Shanxi Province, China, focused on the "iron tailings sand (ITS) plus reclaimed inorganic …
China's sand and stone production accounts for approximately 35% of the world's sand and stone production, and it could reach 2.5 × 10 10 t by 2030 [2]. ... Effect of Replacing Fine Aggregate ...
The abundance of mining activities continuously increases mine wastes/tailings that require storage/disposal. It is well understood that the accumulation of tailings around mines, and consequently, their spreading in the environment could cause serious ecological hazards. Reuse and recycling of mine tailing materials, in construction and earthwork applications (such …
In order to measure the effect of iron tailings sand replacing natural sand on the fire resistance of concrete beams, five full-scale iron tailings sand concrete (ITSC) beams and two natural sand ...
DOI: 10.3740/mrsk.2024.34.6.291 Corpus ID: 271144677; Effect of Iron Ore Tailings Replacing Porous Basalt on Properties of Cement Stabilized Macadam @article{Ren2024EffectOI, title={Effect of Iron Ore Tailings Replacing Porous Basalt on Properties of Cement Stabilized Macadam}, author={Qifang Ren and Fan Bu and Qinglin Huang and Haijun Yin and Yuelei …
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