Cemented paste backfill of sulphide-rich tailings: Importance of binder type and dosage

Erçıkdı, Bayram; Kesimal, Ayhan; Cihangir, Ferdi; Deveci, Hacı; Alp, İbrahi̇m

doi:10.1016/j.cemconcomp.2009.01.008

Cited by 222 publications

(67 citation statements)

References 21 publications

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“…Examples include the works of Fall et al [5], Fall et al [6], Benzaazoua et al [7], Yang et al [8], Roy at al. [9], Ercikdi et al [10], Fall and Pokharel [11], Helinski et al [12], Ercikdi et al [13], Ugama et al [14] and Liu et al [15]. However, none had comprehensively addressed the issue of using mine tailings as construction material for temporary roads in cold climates.…”

Section: Introductionmentioning

confidence: 99%

The computer program Tailings-DEM™ modeling the strength properties of Musselwhite tailings matrices

Mahmood¹,

Elektorowicz

2018

J. Phys.: Conf. Ser.

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Abstract. Mine tailings are the waste materials from mining operations. They are traditionally stored in tailings ponds that have been the subject of several environmental catastrophes that resulted in the contamination of the environment and underground water resources. This paper presents the development of a numerical tool, called Tailings-DEM, for simulating the unconfined compressive strength of Musselwhite tailings, which are sandy materials. This tool is developed based on the Discrete Element Method and the programming language C++. It is shown here that Tailings-DEM™ can be utilized to model Musselwhite tailings matrices and sands with a particle size distribution close to Musselwhite tailings. Additionally, it can be used to model demolition waste, coal mine refuse and Chat.

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Section: Introductionmentioning

confidence: 99%

The computer program Tailings-DEM™ modeling the strength properties of Musselwhite tailings matrices

Mahmood¹,

Elektorowicz

2018

J. Phys.: Conf. Ser.

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“…However, some potentially long-term durability problems of CPB may be encountered when mill tailings with high sulphide (especially pyrite) content are used. Oxidation products (i.e., acid and sulphate) of sulphide minerals present in the tailings could lead to chemical reactions with hydration products and binder phases, such as calcium hydroxide (CH) and calcium aluminate (C 3 A) and, concomitantly, to the formation of expansive phases such as ettringite and gypsum [11][12][13][14][15]. These could then culminate in the reduced backfill strength and potential collapse of the backfill.…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcined Hard Kaolin Dosage on the Strength Development of CPB of Fine Tailings with Sulphide

Zheng

Guo

Zhao

2017

Advances in Materials Science and Engineering

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This study presents the effect of calcined hard kaolin (CHK) as replacement (15-50 wt.%) to Portland cement (PC) on the strength development of cemented paste backfill (CPB) of fine tailings containing sulphide. PC is used as binder at 20 wt.% dosage. The results show that CPB sample containing 30 wt.% CHK replacements produces the desired strength and durability (i.e., 26.1% increase in strength over the curing period between 28 d and 360 d). CPB without CHK does not produce the desired strength and durability (i.e., 32.8% losses in strength over the curing period between 90 d and 360 d). The quantity of expansive gypsum of CPB containing 30 wt.% CHK is obviously less than that of CPB without CHK. The porosity of the fine pore for pore diameter < 0.3 m is obviously higher in CPB containing 30 wt.% CHK than in CPB without CHK, regardless of curing time. It can be concluded that CHK can be suitably exploited for CPB of fine tailings with sulphide to improve the strength and stability in short and long terms.

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“…Researchers like Demers and Haile [4], Zou and Sahito [5] Celik et al [6] Swami et al [7] and Roy et al [8] attempted to investigate the possibility of using mine tailings as filler or construction materials with the addition of binders that include Portland cement. Other researchers like Fall et al [9], Fall et al [10], Benzaazoua et al [11], Ercikdi et al [12], Fall and Pokharel [13], Ercikdi et al [14] and Helinski et al [15] investigated the use of mine tailings in the most traditional manner by using them as cemented paste backfill. Portland cement, however, is relatively expensive, hence the need to use additives other than cement to reduce cost without compromising effectiveness.…”

Section: Introductionmentioning

confidence: 99%

A Conceptual Cost Benefit Analysis of Tailings Matrices Use in Construction Applications

Mahmood¹,

Elektorowicz

2016

MATEC Web of Conferences

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Abstract. As part of a comprehensive research program, new tailings matrices are formulated of combinations of tailings and binder materials. The research program encompasses experimental and numerical analysis of the tailings matrices to investigate the feasibility of using them as construction materials in cold climates. This paper discusses a conceptual cost benefit analysis for the use of these new materials. It is shown here that the financial benefits of using the proposed new tailings matrices in terms of environmental sustainability are much higher when compared to normal sand matrices.

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Cemented paste backfill of sulphide-rich tailings: Importance of binder type and dosage

Cited by 222 publications

References 21 publications

The computer program Tailings-DEM™ modeling the strength properties of Musselwhite tailings matrices

The computer program Tailings-DEM™ modeling the strength properties of Musselwhite tailings matrices

Effect of Calcined Hard Kaolin Dosage on the Strength Development of CPB of Fine Tailings with Sulphide

A Conceptual Cost Benefit Analysis of Tailings Matrices Use in Construction Applications

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