Utilization of granulated marble wastes and waste bricks as mineral admixture in cemented paste backfill of sulphide-rich tailings

Erçıkdı, Bayram; Külekçi, Gökhan; Yılmaz, Tekin

doi:10.1016/j.conbuildmat.2015.06.042

Cited by 171 publications

(54 citation statements)

References 42 publications

(48 reference statements)

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“…Moreover, some studies have assessed the performance of CPBs that contains sulphide-rich tailings (e.g. Cihangir et al, 2012Cihangir et al, , 2015Ercikdi et al, 2013Ercikdi et al, , 2015Tariq andNehdi, 2007, Hassani et al, 2001).…”

Section: Introductionmentioning

confidence: 98%

Temperature dependence of the reactivity of cemented paste backfill

Aldhafeeri

Fall

Pokharel

et al. 2016

Applied Geochemistry

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Section: Introductionmentioning

confidence: 98%

Temperature dependence of the reactivity of cemented paste backfill

Aldhafeeri

Fall

Pokharel

et al. 2016

Applied Geochemistry

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“…These reaction products generate high internal pressure, thereby damaging the strength of the CPB specimens [17,19,[26][27][28][29][30]. The total porosity of the five representative mortar specimens is described in Figure 3.…”

Section: Effects Of Curing Age On Strength Development and Total Poromentioning

confidence: 99%

Pore Structure Evolution and Its Effect on Strength Development of Sulfate-Containing Cemented Paste Backfill

2017

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Abstract:In this study, the effects of the initial sulfate content on the properties of cemented paste backfill (CPB) made from coarse tailings has been investigated via mercury intrusion porosimetry. The combined effects of the sulfate content and curing time on the total porosity, pore size distribution, and unconfined compressive strength of the produced material were discussed. It was found that the specimens with an initial sulfate content of 5000 and 35,000 ppm exhibited higher unconfined compressive strength, while the resulting fine porous structures characterized by pore radii of 10-400 and 1-10 µm significantly improved the mechanical properties of the CPB. In addition, an increase in the curing time decreased the overall pore volume in the radius range of 1-400 µm but increased the pore volume at pore radii less than 1 µm.

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“…Currently, cemented past backfill (CPB), which is made of mill tailings generated by the mineral processing plant, a binding agent such as ordinary Portland cement (OPC), water and other additives, is the most frequently used filling material due to its economic, environmental and technical benefits [10][11][12][13][14][15]. The CPB usually acts as artificial pillar and plays a key role in supporting surrounding rocks.…”

Section: Introductionmentioning

confidence: 99%

Strength Characteristics and Failure Mechanism of Cemented Super-Fine Unclassified Tailings Backfill

et al. 2017

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This experimental study investigates the strength characteristics of cemented super-fine unclassified tailings backfill (CSUTB) and its failure mechanism. Physical and chemical properties of tailings from the Zhongguan Iron Mine (ZGIM) were tested. A series of uniaxial compressive strength (UCS) tests was conducted to determine the relationships between UCS of CSUTB and three factors of cement-tailings ratio (CTR), solid content and curing time. Gray relational analysis (GRA) method was then used to study the sensitivity of UCS to these three factors. Results indicate that ZGIM unclassified tailings is a kind of alkaline super-fine tailings with high activity and quality. UCS of CSUTB increases exponentially with the increase of CTR and solid content, and increases linearly with curing time. The curing time is the most important factor for the UCS of CSUTB, followed by CTR and solid content. The stress-strain curves obtained from UCS tests show the failure process of CSUTB, including four stages of initial deformation, linear elastic, yield deformation and complete failure. It is the result of damage evolution.

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Utilization of granulated marble wastes and waste bricks as mineral admixture in cemented paste backfill of sulphide-rich tailings

Cited by 171 publications

References 42 publications

Temperature dependence of the reactivity of cemented paste backfill

Temperature dependence of the reactivity of cemented paste backfill

Pore Structure Evolution and Its Effect on Strength Development of Sulfate-Containing Cemented Paste Backfill

Strength Characteristics and Failure Mechanism of Cemented Super-Fine Unclassified Tailings Backfill

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