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 …
The article conducts a study on the iron tailings sand concrete's fracture behaviour based on the double-K criterion. Five sets of standard three-point bending beam specimens of concrete with 0% ...
Materials used in proportioning of concrete have significant impact on the properties of concrete produced. Iron ore tailings (IOTs) is a waste product generated from the production process of iron ore. ... A concrete mix of grade M40 with water-cement ratio 0.4 is prepared in this study. Concrete mixes with 0%, 5%, 10%, 15%, 20% IOT as cement ...
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 …
Cement is a key ingredient of concrete, typically making up 10 to 15 percent of the concrete mix by volume. Portland cement and portland-limestone cement are the most common types of cement used in concrete. ... Portland cement clinker is made by first heating limestone, shale, iron ore, and clay in a kiln to 2,700 to 3,000 degrees Fahrenheit ...
2.1.3 Iron ore tailing Iron ore tailing having bulk density 1594 kg/m3 and fineness modulus 2.53. The specific gravity was found to be 2.85.The particle size distribution is plotted as shown in fig 2. The gradation of tailing used, is partly within limits specified in ASTM C 31.
Characterisation of Iron Ore Tailings as Fine Aggregates for Mortar and Concrete results obtained on samples collected from six locations are presented in the Table 1. The natural river sand used to produce the control mortar and the concrete mix …
The paper discusses the experimental studies on strength characteristics and water absorption of iron ore tailings based concrete paver blocks by considering actual area and plan area and results ...
Iron ore tailings used should be analyzed to have enough SiO 2 content for ensuring the attainment of strength to the GPC produced. Though the addition of Iron ore tailings does not provide strength equal to the control mix, the attained strength surpasses the design mix making it usable in production of precast blocks.
concrete mix, 40% of coarse aggregates were replaced with iron ore tailings and concrete blocks were made for 28 day s curing. It resulted in th e compressive strength of 21.93MPa to that of
2014. The main objective of this study was to evaluate the compressive strength of concrete by utilizing three types of used foundry sand; with bentonite clay, with sodium silicate & with phenolic resin as partial replacement of fine aggregates.
The purpose of this research is to determine how well sand can stand in as a partial substitute for iron ore tailings without negatively impacting the microstructure, strength, …
Solid waste management is a critical issue worldwide. Effectively utilizing these solid waste resources presents a viable solution. This study focuses on Iron ore tailings (IOTs), a solid waste generated during iron ore processing, which can be used as supplementary cementitious materials (SCMs) but have low reactivity, hindering their large-scale application …
Findings showed that the performance of the concrete with 35% replacement of iron ore tailings is basically equivalent to that of natural sand concrete. Hence, it can be utilized in engineering …
PDF | On Jan 1, 2018, Krikar M-Gharrib Noori and others published Mechanical Properties of Concrete Using Iron Waste as a Partial Replacement of Sand | Find, read and cite all the research you ...
AbstractIn Brazil, large quantities of iron ore tailings (IOT) are produced as a result of iron mining, which may affect the environment negatively. ... Mechanical strength of an hot-mix asphalt using recycled concrete aggregate: mass and volume proportioning, Road Materials and Pavement Design, 10.1080/14680629.2024.2371338, (1-23), (2024 ...
Conventional fine aggregate (river sand) was replaced with 30% volume of iron ore tailings that had passed through the 600-micron sieve to achieve this. The sieved IOT used in the concrete mix can be seen in Fig. 2, while Fig. 3 shows the gradation curve for the material.
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 ...
Properties of Super Plasticizer Iron Ore Tailings (IOT): Iron Ore Tailings (IOT) used in this paper is the waste slag procured from tailings dam of Iron IJESC, November 2019 % of passing Fine Aggregate:The locally available natural sand of grading zone II as per IS: 383-1970 was used as fine aggregate in the concrete mix.
It is entirely feasible to use garbage and byproducts as concrete aggregates. Iron ore tailings were another concrete application. The use of iron ore tailings in the manufacture of ceramic tiles was investigated, and it was discovered that tiles containing up to 40% iron ore tailings had higher hardness and strength. As the world becomes more
Optimization Studies of Iron Ore Tailings Powder and Natural ... The conventional concrete mix proportions were determined in accordance with IS 10262:2009. Table 3 displays
The concrete with 10% glass powder & 30% iron ore tailings showed a higher strength compared to the conventional mix for 28 days. Concrete mix containing 10% GP and 30% IOT showed higher flexural ...
He studied the suitability and reliability of Iron ore tailings in manufacture of Paving Blocks. He prepared five reference mixes using cement, jelly dust and baby jelly with different mix ratios and by using sand and Iron ore tailings as fine aggregates.
Normal Concrete Mix 0% with 0% iron ore mix 26.67 34.67 2 Mix 1 at 10% iron ore mix were almost the same size. First mold was constructed with a 24.32 38.20 3 Mix 2 at 20 % iron ore mix 26.67 36.44 4 Mix 3 at 30 iron ore mix 18.22 22.65 Figure 1: Compressive strength in 7 days Figure 2: Compressive strength in 28 days
The IOT powder significantly increases the hydration of the binder at a low w/b ratio. Particularly for paste containing fine IOT powder, the pore structure of paste containing IOT powder is finer than cement paste. Moreover, the addition of iron ore tailings to the concrete mix, the water consumption and slump values were reduced.
Iron ore tailings were also used in other concrete applications. For example, Das et al. [13] studied the use of IOT to develop ceramic tiles and their study showed, that tiles produced at a maximum of 40% of IOT were superior in terms of scratch hardness and strength, compared to European standard specifications. In a related research, Yao et al. [14] produced a novel …
Sustainable handling of iron ore tailings is of prime concern to all stakehold-ers who are into iron ore mining. This study seeks to add value to the tailings by utilis-ing them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with …
IJESC, 2019. Iron Ore Tailings (IOT) are the waste slag resulted from iron ore mines. Large amount of Iron Ore Tailings (IOT) have been generating every year posing serious environmental problems, large production of cement everyday resulting the emission of CO 2 and increase in the consumption of river sand for construction activities making the river beds over-exploited.
Fly ash and slag from iron ore are possible alternatives to cement in a concrete mix. Fly ash, a byproduct of coal-burning power plants, can be incorporated into concrete mixes to make up as much as 15 to 30% of the cement, without harming the strength or durability of the resulting mix. Iron-ore slag, a byproduct of the iron-ore smelting ...
This research discusses the behavior of ultra-high-performance concrete (UHPC) specimens made with dumped waste iron ore tailing (IOT) as a fine aggregate in the mix by …
The greater substitution ratio of iron ore tailings increased the number of dangerous voids in the concrete mix, and the CS of the concrete with a 45% substitution of natural …
Gather at least six iron ore. You can either refine this into ingots or leave them are raw ore. Combine the three iron ingots (or six iron ore) and one coal ore in the mortar and pestle. This will create one steel bloom. Smelt the steel bloom at the concrete furnace to create one steel ingot. After completing these steps, you will have one ...
Concrete containing iron ore tailings (IOT) enhances compressive and splitting strengths. IOT concrete improves durability properties and resists carbonation. IOT as sand …
The disposal of industrial by-product tailings has become an important issue in solving environmental pollution. In this study, 15%, 30%, 50%, and 70% iron tailings were used to replace the natural sand in concrete, and 1.5% steel fiber and 0–0.75% PVA fibers were added to the iron tailings concrete. The effects of the iron tailings replacement rate and the fiber content …
A comparative study on the Optimum percentage replacement with iron ore tailings Using this material to replace and cement in a concrete mix, in various percentages from 5% up to 30%, curing for a period of up to 90 days in the process, the material was found to have similar characteristics with that of pozzolana, one of which was that the strength which increased up …
concrete containing 20% iron ore tailing (IOT), Valu e comparable to 28 days compressive stren gth of 45.02 was obtained using only sand as fine aggregate.
T : Proportion of concrete mix with iron ore tailings. Proportion of iron ore tailings (%) Iron ore tailings (kg) Naturalsand(kg)Flyash(kg)Cement(kg)Crushedstone(kg)Water(kg)Water-reducing agent (kg) . . . . Slump 0 50 100 150 200 Slump (mm) 0 25 35 45 Proportion (%) Residual value of 1 h slump (a) Slump of the rst group 0 50 100 150
The objective of this study is to evaluate the modified performance of concrete with mixing of iron ore tailings in order to solve the shortage of natural sand and make full use …