Mine waste as a sustainable resource for facing bricks

Simão, Francisco Veiga; Chambart, Hilde; Vandemeulebroeke, Laure; Nielsen, Peter; Adrianto, Lugas Raka; Pfister, Stephan; Cappuyns, Valérie

doi:10.1016/j.jclepro.2022.133118

Cited by 24 publications

(6 citation statements)

References 38 publications

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“…The changed composition of raw iron ore at different periods and frequent alterations of sand outlet positions can cause the elements to exhibit uneven spatial distributions. IOTs have been used as raw materials in construction building materials, , such as cement, concrete, nonburning bricks and ceramics. Figuring out the spatial distribution of major elements in tailings ponds is beneficial for more efficient and reasonable management and utilization of tailings.…”

Section: Resultsmentioning

confidence: 99%

Mineralogy and Geochemistry of Iron Tailings from Yeshan Iron Deposit, Southwest Jiangsu, China: Implications for Potential Utilization

Yang,

Xie,

et al. 2024

ACS Omega

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In this work, twenty-one core samples of tailings wastes were collected from Yeshan iron tailings pond in Jiangsu Province, China. The mineralogical−chemical properties of Yeshan iron ore tailings (IOTs) were investigated to explore potential utilization. Mineralogical investigations and mineral liberation analysis indicated that the iron tailings have complex texture and incomplete mineral liberation, suggesting further grinding can improve higher recovery. Yeshan IOTs accumulated much higher MgO originating from dolomite, therefore, it could be infeasible to utilize a large quantity of Yeshan IOTs as alternative raw meals for cement clinker or replace aggregates in concrete. 2D vertical distribution profiles created with the ordinary kriging method presented heterogeneous distributions of major elements, and the variation trends were inconsistent. The results obtained in this work provide insight for exploiting and reducing Yeshan IOTs.

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Section: Resultsmentioning

confidence: 99%

Mineralogy and Geochemistry of Iron Tailings from Yeshan Iron Deposit, Southwest Jiangsu, China: Implications for Potential Utilization

Yang,

Xie,

et al. 2024

ACS Omega

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“…Bricks made from LDPE plastic should be used in the construction industry to solve the shortage of conventional materials. Plastics have many great properties, including strength [53] and durability [54]. These wastes can be transformed into sustainable materials to reduce pollution.…”

Section: Formaldehyde Of Urea Milk or Water Bottlesmentioning

confidence: 99%

An investigation of the use of plastic waste in the manufacture of plastic bricks

Rauniyar,

Nakrani,

Narpala

et al. 2024

Preprint

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There is an increase in waste production among the Indian population. Some of these wastes pose a threat to the environment. There is also a significant amount of plastic waste in the country. Even though it is not biodegradable, it poisons trees and aquatic organisms. Thus, waste plastics were repurposed for use in the construction industry. Cement, fly ash, M sand, and plastic waste fibres are used to make plastic bricks. Polypropylene (PP) has a high deformation capacity and is a cost-effective material. Plastic waste is used in this study in the form of polypropylene fibres. To produce the bricks, different mix ratios were used in which PP waste was used in proportions of 5%, 10%, and 15% (represented as Mix1, Mix2, and Mix3), based on the total mixing of the polycarbonate substance volume of bricks. The purpose of this study is to investigate the feasibility of utilizing plastic wastes to produce a cost-effective and lightweight plastic brick for use in construction. Compressive strength, water absorption, soundness, efflorescence, and hardness tests were carried out on the bricks. The compressive strength of mix 2 at a load of 426 kilograms is the highest of the three plastic bricks tested. A comparison of this proportion with other mix proportions and conventional brick effectiveness.

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“…The resultant low-fired clay products like bricks and roof tiles had porous bodies but were durable enough for construction purposes. 7 With modernization, the clay firing is done in tunnel kilns to achieve temperatures of 1050-1150°C and develop fully vitrified dense ceramics like tableware, sanitaryware, tiles, etc. 8 China has a long history of utilizing locally available clays for making ceramic wares and architectural constructs.…”

Section: Introductionmentioning

confidence: 99%

Characterization and properties of Chinese red clay for use as ceramic and construction materials

Gu,

Ling

2024

Science Progress

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This study involves the characterization and analysis of a Chinese red clay obtained from Hunan province to determine its suitability for manufacturing ceramic products. X-ray fluorescence analysis showed the clay has high silica (63.25 weight percent) and alumina (21.38 weight percent) content along with iron oxide, alkalis, and calcium acting as fluxes. X-ray diffraction (XRD) confirmed the presence of quartz, kaolinite, illite, and hematite as the major mineralogical phases. Scanning electron microscopy revealed loosely stacked, plate-shaped kaolinite particles exhibiting pseudohexagonal morphology. Particle size distribution shows a d50 of 12.7 μm and specific surface area is 21.3 m2/g. Differential thermal analysis-thermogravimetric analysis showed mass losses between 450–600°C and 950–1050°C corresponding to dehydroxylation and formation of a liquid phase, respectively. Dilatometry traced the onset of viscous flow sintering around 1000°C. Test bars produced from the clay were fired at 800°C, 900°C, 950°C, 1000°C, and 1050°C. The firing shrinkage increased from 2.5% at 800°C to 12.8% at 1050°C. Strength improved from 11.2 megapascals at 800°C to 42.3 megapascals at 1050°C due to densification and mullite formation. Hematite content caused the color to change from orange-red at 950°C to dark red at 1050°C. XRD analysis of fired specimens confirmed the presence of hematite and newly formed mullite and cristobalite phases. The results indicate the suitability of the clay for manufacturing bricks, roof tiles, and wall tiles using appropriate firing temperatures and cycles.

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Mine waste as a sustainable resource for facing bricks

Cited by 24 publications

References 38 publications

Mineralogy and Geochemistry of Iron Tailings from Yeshan Iron Deposit, Southwest Jiangsu, China: Implications for Potential Utilization

Mineralogy and Geochemistry of Iron Tailings from Yeshan Iron Deposit, Southwest Jiangsu, China: Implications for Potential Utilization

An investigation of the use of plastic waste in the manufacture of plastic bricks

Characterization and properties of Chinese red clay for use as ceramic and construction materials

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