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 …Web

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 strength of 5.05 MPa for 28 days. Splitting tensile strength value is also increasing i.e., for 10% glass powder and 30% IOT, …Web

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 ...Web

Experimental investigations were conducted to study the compressive strength, physical, mechanical and fresh property of concrete containing iron-ore waste. During the experiment, concrete cubes were prepared with 10- composition of iron ore waste to evaluate their compressive strength.Web

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. 2.1.4. Chemical admixtureWeb

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 ... A concrete mix design of grade 40 MPa with a water–cement ratio of 0.5 and a mix design ratio of 1:2:3 (cement:fine aggregates:coarse aggregates) was prepared in the ...Web

High density concrete is used mainly in radiation shielding in hospitals, store nu 3.5 to 4.5 in naturally available minerals fiber volume fraction used in concrete in the range of 0.5 to 1.5 %. Beyond which may pose the existing mix which had many issues in achieving desired output. These parameters are which isWeb

Cement is the main basic ingredient of ready-mix concrete. Cemex is among the leading cement companies for high-quality bagged and branded cement products. Cement is a fine powder, obtained from the calcination at 1,450°C of a mix of limestone, clay, and iron ore. The product of the calcination process is clinker—the main ingredient of ...Web

Carbon capture and utilization for concrete production (CCU concrete) is estimated to sequester 0.1 to 1.4 gigatons of carbon dioxide (CO2) by 2050. However, existing estimates do not account for ...Web

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 ...Web

GGBS (Ground Granulated Blast-furnace Slag) is a by-product of iron manufacturing which is used as a cementitious material used in concrete. GGBS is obtained by the heating of iron ore, limestone and …Web

Ismail and Al-Hashmi conducted a sequence of experimental tests on the mechanical behavior of concrete made from abandoned iron ore tailings in Iraq, and the findings showed that it performed better than regular concrete and displayed greater …Web

The mix with only sand as fine performed tests on permeability, frost resistance, and aggregate served as the control mix, while sand was carbonation resistance for the concrete specimens with replaced in the other mixes with 5, 10, 15, and 20% of an optimal amount of iron ore tailings, and the iron ore tailings (IOT).Web

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. Concrete mixtures containing 25%, 50%, 75% and IOT as river sand replacement were prepared with 0.5 water-to-cement ratio (W/C). Compressive and splitting tensile strengths, modulus of …Web

The ground granulated blast furnace slag (GGBFS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength and durability. This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree Celsius. The process is carried out in a blast furnace.Web

In Brazil, large quantities of iron ore tailings (IOT) are produced as a result of iron mining, which may affect the environment negatively. This work evaluated the use of IOT in hot mix asphalt type C (HMA-C). For this purpose, IOT was incorporated as a filler (at 1% in relation to the total mass of HMA-C).Web

In this paper self-compacting concrete is prepared by partially replacing cementitious material by red mud (RM) and in the same mix partially replacing sand by iron ore tailings. Cementitious material in the mixture …Web

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 150Web

Lei Zhang Add to Mendeley https://doi/10.1016/j.jobe.2023.106585 Get rights and content Highlights • Cement and aggregate can be simultaneously replaced in …Web

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 ofWeb

The results of dry density of hematite iron ore concrete mix. are recorded in Table 4. 2.2.3. Coupon and proctor densities. Dry densities obtained for Coupon samples; usually the sam-Web

The optimum compression strength is achieved for the mix containing 10% iron ore tailings. After the beneficiation of iron ore, the waste is generated, which arise many environmental issues for both living and nonliving components. ... The findings indicate that concrete with 35% iron ore tailings replacement performs similarly to …Web

Iron: compressive strength of concrete: The mix design ratio of 1:2:3 (cement:fine aggregates:coarse aggregates) 33.12 (ref. concrete) 36.95 (tailings concrete) ... Synthetic gravel for concrete obtained from sandy iron ore tailing and recycled polyethyltherephtalate. Constr. Build. Mater., 151 (2017) ...Web

Abstract. 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 …Web

In this study, the potential of converting iron ore tailings (IOTs) into sustainable building materials was explored. IOTs were combined with fly ash (FA) and ground granulated blast-furnace slag (GGBFS) to prepare IOTs-based supplementary cementitious materials (SCMs). A concrete mix using IOTs-aggregate was also …Web

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 ...Web

2.1 Preparation of Materials. The iron ore tailings used in the study were sourced from tailing dam (Fig. 2b) of beneficiation plant at Barbil iron ore mine of Odisha state, India. Processed clay was procured from a local established fired clay brick manufacturing company, particularly to take advantage of the traditional knowledge of …Web