Effects of quartz-based mine tailings on characteristics and leaching behavior of ultra-high performance concrete

Pyo, Sukhoon; Tafesse, Million; Kim, Bong-Ju; Kim, Hyeong-Ki

doi:10.1016/j.conbuildmat.2018.01.087

Cited by 76 publications

(25 citation statements)

References 22 publications

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“…Soliman and Tagnit-Hamou [10] observed an improvement in slump flow by incorporating glass powder, with slightly larger average particle diameter, as partial or total substitution of quartz sand. Similar results were obtained by Pyo et al [25] when substituting the finest silica sand with waste generated in a tungsten mine. For substitutions of 50% and 100% there is an improvement in the flow of fresh concrete greater than 30%.…”

Section: Development Of the Experimental Programsupporting

confidence: 88%

Use of Mining Waste to Produce Ultra-High-Performance Fibre-Reinforced Concrete

et al. 2020

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This research work analyses the influence of the use of by-products from a fluorite mine to replace the fine fraction of natural aggregates, on the properties of Ultra-High-Performance Fibre-Reinforced Concrete (UHPFRC). Replacing natural aggregates for different kinds of wastes is becoming common in concrete manufacturing and there are a number of studies into the use of waste from the construction sector in UHPFRC. However, there is very little work concerning the use of waste from the mining industry. Furthermore, most of the existing studies focus on granite wastes. So, using mining sand waste is an innovative alternative to replace natural aggregates in the manufacture of UHPFRC. The substitutions in this study are of 50%, 70% and 100% by volume of 0–0.5 mm natural silica sand. The results obtained show that the variations in the properties of consistency, compressive strength, modulus of elasticity and tensile strength, among others, are acceptable for substitutions of up to 70%. Therefore, fluorite mining sand waste is proved to be a viable alternative in the manufacturing of UHPFRC.

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Section: Development Of the Experimental Programsupporting

confidence: 88%

Use of Mining Waste to Produce Ultra-High-Performance Fibre-Reinforced Concrete

et al. 2020

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“…The most frequently employed SCMs in the cement industry are discussed below: fly ash (FA) and/or ultrafine fly ash (UFFA) [35], silica fume (SF) [36,37] and natural pozzolanic materials like rice husk ash (RHA) [38][39][40], sugarcane bagasse ash (SBA) [41][42][43], sewage sludge ash (SSA) [44,45], palm oil fuel ash (POFA) [46][47][48][49], mine tailings [50][51][52][53], marble dust [54][55][56][57][58], construction and demolition debris (CDD) [59][60][61].…”

Section: Supplementary Cementitious Materials (Scms)mentioning

confidence: 99%

End-of-Life Materials Used as Supplementary Cementitious Materials in the Concrete Industry

et al. 2020

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A sustainable solution for the global construction industry can be partial substitution of Ordinary Portland Cement (OPC) by use of supplementary cementitious materials (SCMs) sourced from industrial end-of-life (EOL) products that contain calcareous, siliceous and aluminous materials. Candidate EOL materials include fly ash (FA), silica fume (SF), natural pozzolanic materials like sugarcane bagasse ash (SBA), palm oil fuel ash (POFA), rice husk ash (RHA), mine tailings, marble dust, construction and demolition debris (CDD). Studies have revealed these materials to be cementitious and/or pozzolanic in nature. Their use as SCMs would decrease the amount of cement used in the production of concrete, decreasing carbon emissions associated with cement production. In addition to cement substitution, EOL products as SCMs have also served as coarse and also fine aggregates in the production of eco-friendly concretes.

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“…Generally, tailings used as partial aggregate or cement replacement has an adverse effect on the workability of fresh concrete and mortar due to the increase in the total specific area [26,38,62]. However, by eliminating the finer sizes of tailings as a cement replacement, the adverse effect on workability can be reduced [33]. The setting time of cement paste and mortar extended by using tailings substitution as aggregate, or SCMs, for different reasons [23,32].…”

Section: Discussionmentioning

confidence: 99%

Utilization of tailings in cement and concrete: A review

Gou

Zhou

Then

2019

Science and Engineering of Composite Materials

147

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One of the advantages of cement and the cement concrete industry in sustainability is the ability to utilize large amounts of industrial solid wastes such as fly ash and ground granulated blast furnace slag. Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries. This paper reviews the potential utilization of tailings as a replacement for fine aggregates, as supplementary cementitious materials (SCMs) in mortar or concrete, and in the production of cement clinker. It was shown in previous research that while tailings had been used as a replacement for both fine aggregate and cement, the workability of mortar or concrete reduced. Also, at a constant water to cement ratio, the compressive strength of concrete increased with the tailings as fine aggregate. However, the compressive strength of concrete decreased as the replacement content of the tailings as SCMs increased, even whentailings were ground into smaller particles. Not much research has been dedicated to the durability of concrete with tailings, but it is beneficial for heavy metals in tailings to stabilize/solidify in concrete. The clinker can be produced by using the tailings, even if the tailings have a low SiO2 content. As a result, the utilization of tailings in cement and concrete will be good for the environment both in the solid waste processing and virgin materials using in the construction industry.

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Effects of quartz-based mine tailings on characteristics and leaching behavior of ultra-high performance concrete

Cited by 76 publications

References 22 publications

Use of Mining Waste to Produce Ultra-High-Performance Fibre-Reinforced Concrete

Use of Mining Waste to Produce Ultra-High-Performance Fibre-Reinforced Concrete

End-of-Life Materials Used as Supplementary Cementitious Materials in the Concrete Industry

Utilization of tailings in cement and concrete: A review

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