Mechanical Properties of Iron Ore Tailings Filled-Polypropylene Composites

Adedayo, S. M.; Onitiri, M.A.

doi:10.4236/jmmce.2012.117051

Cited by 10 publications

(6 citation statements)

References 13 publications

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“…Therefore, this particular concrete will have more fines as compared with the control mix. The higher content of fines in the iron ore tailings aggregates concrete will increase the demand for water in the mix and this will reduce the bond strength existing in the aggregate-cement paste, leading to a reduction in tensile strength (Adedayo & Onitiri, 2012;Ugama et al, 2014). However, the tensile strength exhibited by the iron ore tailings aggregates concrete in this work increased favourably with ageing and there is 4.8% improvement as compared with similar work where only 20% of natural sand fine aggregates were replaced by iron ore tailings as reported earlier by Ugama et al (2014).…”

Section: Resultsmentioning

confidence: 97%

Utilisation of iron ore tailings as aggregates in concrete

et al. 2015

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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 properties of the concrete such as workability, durability, density, compressive strength and indirect tensile strength were tested. A controlled mix of concrete was also prepared in similar way using conventional materials and the results were compared with the tailings concrete. 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. The indirect tensile strength did not improve against the control mix due high content of fines in the tailings aggregates but showed 4.8% improvement compared with the previous study where the conventional fine aggregates was partially replaced by 20% with iron ore tailings.

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Section: Resultsmentioning

confidence: 97%

Utilisation of iron ore tailings as aggregates in concrete

et al. 2015

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“…The procedure for the development of iron ore tailings reinforced -epoxy and -polypropylene composites had been discussed elsewhere (Adedayo and Onitiri, 2012a) and (Adedayo and Onitiri, 2012b). The iron ore tailings loading is presented in Table 2.…”

Section: Development Of Iron Ore Tailings Filled -Epoxy and -Polypropmentioning

confidence: 99%

Effect of Iron Ore Tailings Particle Sizes on the Thermal Properties of Epoxy and Polypropylene Matrix Composites

et al. 2020

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Thermal properties of materials such as plastic matrix composite is one of the important parameters for determining their behaviour and relevant applications. This present work focuses on determining the thermal behaviour of epoxy and polypropylene (PP) matrix composite reinforced with iron ore tailings (IOT) particulates of sizes 150 µm, 212 µm and 300 µm at various loadings of 5%, 10%, 15%, 20%, 25%, and 30%. The thermal behaviour of the developed composites was investigated experimentally using a KD2 pro thermal analyser. The results obtained from the experiment showed that increasing filler loading in epoxy leads to increased specific heat capacity and thermal resistivity. The maximum values recorded for the thermal resistivity and specific heat capacity were 0. 592°C.m/W and 2.352 J/kgK respectively. Thermal conductivity and thermal diffusivity of values 0.168W/mK and 0.089 mm²/s respectively were the lowest obtained for the epoxy matrix composite. It was also observed that addition of IOT in PP had significant effect on the thermal properties of the PP composite. Thermal conductivity and thermal diffusivity were found to increase with increased particle loading compared to the pure PP sample; the highest value being 2.235 W/mK and 5.51 mm²/s for thermal conductivity and thermal diffusivity respectively while low values of 0.05 Cm/W and 0.371 J/kgK was recorded for thermal resistivity and specific heat capacity. The presence of iron ore tailings reduces the thermal conductivity and diffusivity in epoxy but increases the conductivity and diffusivity in polypropylene. Keywords— Composite, Epoxy, IOT, Polypropylene, Composite, Thermal Conductivity

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“…One way of reducing the production cost but still maintaining the properties of the composite is by using a waste metallic material such as iron filings from the waste stream [8]. Iron fillings had been chosen due to their availability, low cost and high specific strength [9,10]. The iron fillings and polystyrene resins used in this study were obtained directly from solid waste streams.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Electrical Characteristics of Recycled Iron Reinforced Polystyrene Composites

Abdulkareem

Ighalo

Adeniyi

2021

IJEE

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The prospective reuse of iron fillings from the milling machine and polystyrene in the solid waste streams in the production of plastic composites were considered in this study. The preparation, electrical properties, density, void fraction and particle distributions of the solvated polystyrene filled composites were all investigated as a function of recycled iron fillings concentration. The composites were developed by hand layup technique and cured by casting under ambient conditions (25 ± 2 o C) for 7 days. The compared micrographs confirmed welldispersed recycled iron fillings in polystyrene matrix and decreasing void fraction as iron filling increases in the composites. The highest electrical conductivity and density values of the composites were obtained at the highest iron filling composition of 40 wt% as 5.91 × 10 -07 S/cm and 1.31 g/cm 3 , respectively. The developed iron polystyrene composite has good electrical properties, making it suitable to be an alternative material for metals.

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Mechanical Properties of Iron Ore Tailings Filled-Polypropylene Composites

Cited by 10 publications

References 13 publications

Utilisation of iron ore tailings as aggregates in concrete

Utilisation of iron ore tailings as aggregates in concrete

Effect of Iron Ore Tailings Particle Sizes on the Thermal Properties of Epoxy and Polypropylene Matrix Composites

Evaluation of the Electrical Characteristics of Recycled Iron Reinforced Polystyrene Composites

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