Use of copper mine tailing in concrete: strength characteristics and durability performance

Esmaeili, Jamshid; Aslani, Hossein

doi:10.1007/s10163-019-00831-7

Cited by 49 publications

(19 citation statements)

References 34 publications

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“…In one of such projects, the engineering faculty of the Pontifical Catholic University of Chile in conjunction with the company Minera San Pedro, have analyzed the technical feasibility of creating structural concrete through the use of mining tailings in cement replacement. After the optimization of some operational conditions such as the temperature and the time of demolition, a replacement rate of up to 40% has been reached, which is a notable fraction, compared to various studies in which replacement ratios between 5-30% are reported (Onuaguluchi and Eren 2012, Esmaeili and Aslani 2019. However, in other studies, it has been observed that copper tailings may be utilized for the partial replacement of natural fine aggregates up to a 60% (Thomas et al 2013).…”

Section: Reuse (R2)mentioning

confidence: 87%

Toward the Implementation of Circular Economy Strategies: An Overview of the Current Situation in Mineral Processing

Cisternas

Ordóñez

Jeldres

et al. 2021

Mineral Processing and Extractive Metallurgy Review

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Mining resources have played a leading role in the development of humanity, and the demand for these raw materials is expected to increase in the foreseeable future. In addition, new technologies also require the extraction of new critical materials. These trends pose various challenges as there is a limited supply of natural resources, and standard mining and mineral processing practices are associated with significant environmental impacts, such as waste generation, energy and water consumption, and CO 2 emissions. The circular economy (CE) has recently gained attention as a model to address such a complex scenario. This work analyzes the current efforts towards the application of CE in mineral processing. Although advances have been made, this review shows that the most significant material flows and environmental impacts occur near the production sites, which currently limits the closure of loops. Besides, mining industries are conservative regarding the adoption of new technologies or processing strategies, which is another hindrance to the implementation of the CE. Thus, and with few exceptions, while some sectors are already facing advanced stages of CE (namely, CE 3.0), the mineral processing field struggles to advance from the basic CE requirements (i.e, CE 1.0 to CE 2.0).

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Section: Reuse (R2)mentioning

confidence: 87%

Toward the Implementation of Circular Economy Strategies: An Overview of the Current Situation in Mineral Processing

Cisternas

Ordóñez

Jeldres

et al. 2021

Mineral Processing and Extractive Metallurgy Review

View full text Add to dashboard Cite

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“…Although the strength would increase in the late stage, the overall strength of the binding system eventually decreased. If copper tailings are applied to large volume concrete, this defect could be made up by stepping up grinding and extending calcination, so as to enhance the activity of the materials [22]. Further research is needed to fully overcome this defect.…”

Section: Micro-morphological Differencesmentioning

confidence: 99%

Hydration Features of Composite Binding Material with High-Dose Copper Tailings

Wang¹,

Hanxi²,

Yang³

et al. 2021

ACSM

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Based on Krstulovic-Dabic model, this paper modifies the center particle hydration model according to the features of copper tailings, and then simulates the hydration process of cement-based composite binding system mixed with copper tailings. The hydration exothermic features were analyzed under different dosages, and different temperatures. Then, the simulated parameter values of the hydration process were compared with those measured in experiments. The results show that: the mixing of copper tailings powder can reduce the hydration heat release and slow down hydration rate of the composite binding material, and improve the thermal performance of the concrete; the prepared copper tailings powder is active enough to replace fly ash and ground-granulated blast furnace slag (GGBS) as cement admixtures; When the dosage surpasses 40%, the copper tailings can be applied to mass concrete projects.

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“…Esmaeli and Aslani [6] analysed the use of copper mine tailing in concrete and revealed the success of the partial replacement material for the cement. Gou et al [7] reviewed the potential utilization of tailings as a replacement for fine aggregates, such as supplementary cementitious materials (SCMs) in mortar or concrete and in the production of cement clinker.…”

Section: Introductionmentioning

confidence: 99%

Optimum Mix Design for 3D Concrete Printing Using Mining Tailings: A Case Study in Spain

et al. 2021

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A mix design, using a mixture of sand and mine tailings as aggregates, was selected to produce a cement-based 3D printing material suitable for building purposes. Different dosage rates of mine tailings, water, superplasticizers, and accelerators were added to the mixture with the end of looking for the optimum strength, workability and buildability. The term buildability includes aspects such as pumpability and printability. Different tests were carried out in order to compare homogeneous material strength with printed material strength, to evaluate the bonding strength between filaments, and to establish the relationship between fresh behaviour and buildability for printing applications. Finally, a mixture with 20% of recycled materials demonstrated its ability to be used as concrete printing material in the construction industry in the frame of circular economy concept.

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Use of copper mine tailing in concrete: strength characteristics and durability performance

Cited by 49 publications

References 34 publications

Toward the Implementation of Circular Economy Strategies: An Overview of the Current Situation in Mineral Processing

Toward the Implementation of Circular Economy Strategies: An Overview of the Current Situation in Mineral Processing

Hydration Features of Composite Binding Material with High-Dose Copper Tailings

Optimum Mix Design for 3D Concrete Printing Using Mining Tailings: A Case Study in Spain

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