A comparative study on the practical use of low sulfide base-metal tailings as aggregates for rendering and masonry mortars

Argane, R.; Benzaazoua, Mostafa; Hakkou, Rachid; Bouamrane, A.

doi:10.1016/j.jclepro.2015.06.004

Cited by 55 publications

(26 citation statements)

References 36 publications

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“…Workability, which is defined as the ease of transportation, placement, compaction and finishing of the mixture, is an important property of fresh mortar or concrete mixtures [39]. It was found that the flow of mortar decreased with increasing tailing substitution levels because tailings had a finer particles size distribution which raised the total specific surface area of fine aggregates [26,38,40]. A similar consequence applied to concrete.…”

Section: Effect On Fresh Propertiesmentioning

confidence: 91%

“…Water absorption is a physical property of hardened mortar or concrete and is related to the porosity of mortar and concrete. Most published research has revealed that mortar or concrete containing tailings as fine aggregate had a higher water absorption percentage due to capillarity [26] or higher fine content and specific surface area values of tailings [38]. Shettima et al [27] described that concrete with tailings absorbed more water than control specimen; but water absorption decreased with increase in the age as shown in Figure 6, for the tailings occupied the macro and micro pores in the mix.…”

Section: Effect On Hardened Propertiesmentioning

confidence: 97%

“…The physical properties of tailings have a significant impact on the workability, density, dimensional stability, strength, and durability of concrete. Sometimes tailings, especially metallic tailings, contain a thimbleful of deleterious heavy metal, which may cause environmental concerns or modify the hydration processes and durability of mortar or concrete mixtures [37,38].…”

Section: Utilization Of Tailings As Aggregatementioning

confidence: 99%

“…Similar to the fresh mortar or concrete mixtures, researchers noticed an increase in the densities of hardened mixtures when tailings, such as iron ore tailings [36], leadzinc tailings [38], and copper tailings [29], were used as an aggregate replacement. Also, as a result of a higher specific gravity of tailings, mortar prepared with fractional replacement content of aggregate by tailings was proved to be effective in radiation shielding [42].…”

Section: Effect On Hardened Propertiesmentioning

confidence: 99%

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Utilization of tailings in cement and concrete: A review

Gou

Zhou

Then

2019

Science and Engineering of Composite Materials

132

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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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Section: Effect On Fresh Propertiesmentioning

confidence: 91%

Section: Effect On Hardened Propertiesmentioning

confidence: 97%

Section: Utilization Of Tailings As Aggregatementioning

confidence: 99%

Section: Effect On Hardened Propertiesmentioning

confidence: 99%

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Utilization of tailings in cement and concrete: A review

Gou

Zhou

Then

2019

Science and Engineering of Composite Materials

132

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“…The Pb-Zn fraction, when using the appropriate substitution level, may serve as an active set retardant improving mortars setting time. The leaching of metals was also successfully stabilized in mortars [7].…”

Section: Introductionmentioning

confidence: 99%

The influence of tailings and cement type on durability properties of self-compacting concrete

Janković¹,

Šušić²,

Stojanović³

et al. 2017

Teh. vjesn.

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Preliminary communicationIn order to examine the differences in chemical composition and the possibility of using mine tailings in mortar and concrete production, samples were taken from the landfill and directly from the production. Tailings test results showed no pozzolanic activity and that its application in concrete can be only a partial replacement of aggregate. This paper presents the possibility of using tailings in self-compacting concrete made with Portland cement and sulphate resistant cement. Concrete specimens in which the aggregate fraction 0/4 mm was replaced with 10 and 20 % of tailings were examined. The resistance to freezing and thawing with and without de-icing salts is used as an indicator of concrete durability. Keywords: CEM I; CEM III; durability; self-compacting concrete; tailings Utjecaj jalovine i vrste cementa na trajnost samougrađujućeg betonaPrethodno priopćenje Da bi se ispitala razlika u kemijskom sastavu i mogućnost primjene jalovine iz rudnika u proizvodnji žbuke i betona uzeti su uzorci s deponija i direktno iz proizvodnje. Nijedan uzorak nije pokazao pucolansku aktivnost. Iz tog razloga, ovaj materijal je moguće koristiti samo kao dkelimičnu zamenu za agregat. U ovom radu je prikazana mogućnost uporabe jalovina u samougrađujućem betonu pripremljenim s portland cementom i sulfatno otpornim cementom. Ispitivani su betonski uzorci u kojima je frakcija agregata 0/4 mm zamijenjena s 10 i 20 % jalovine. Kao pokazatelj trajnosti betona uzete su otpornosti prema zamrzavanju i odmrzavanju sa i bez soli za odmrzavanje.

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Mine tailings-based geopolymers: Physical and mechanical properties

Akeed

2022

Preprint

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A comparative study on the practical use of low sulfide base-metal tailings as aggregates for rendering and masonry mortars

Cited by 55 publications

References 36 publications

Utilization of tailings in cement and concrete: A review

Utilization of tailings in cement and concrete: A review

The influence of tailings and cement type on durability properties of self-compacting concrete

Mine tailings-based geopolymers: Physical and mechanical properties

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