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Article
Materials Science, Multidisciplinary
Ziyue Zhao et al.
Summary: For mines with poor ore bodies and surrounding rocks, the most suitable mining method is the downward layered filling mining technique, which can eliminate problems related to poor ore deposit conditions. However, the safety of the artificial roof is crucial in this technique.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Review
Engineering, Geological
N. M. Chiloane et al.
Summary: This paper reviews the factors influencing the uniaxial compressive strength (UCS) of cemented tailings backfill (CTB) and highlights areas for further research, such as the addition of fibers, the effects of stope size on UCS, and alternative binders for future use.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Yong Yang et al.
Summary: This paper develops a THRC coupling model to predict the fluidity of fresh CTB slurry, and validates the model through rheological testing experiments. The research outcomes contribute to the regulation of time and temperature factors in the preparation and transportation of fresh CTB slurry.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Composites
Xuebing Zhang et al.
Summary: This study investigates the effects of an eco-friendly ultrasonic-assisted resin infiltration process on the carbon nanotube (CNT) film and its based composites. It is found that ultrasonication can reduce CNT bundle diameter and increase film stretchability, resulting in improved performance of CNT film-based composites. However, excessive sonication can damage the crystal structures of CNTs and degrade the mechanical properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Construction & Building Technology
Shiwen Qin et al.
Summary: This study explores the effect of using 3D printed polymeric lattice to reinforce cementitious tailings backfill on roof stability. The results show that U-shaped 3DPPL reinforcement significantly improves the flexural strength of CTB when the material types are OR and NY, while material type TR weakens it. Among different shapes and material types, rhombus and OR are found to be the best choices. U-shaped 3DPPL reinforced backfills exhibit better flexural deflection values compared to N-3DPPL reinforced ones.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jiajian Li et al.
Summary: This study investigates the uniaxial compressive strength, mechanical properties, and microstructural characteristics of fiber-reinforced cemented tailings backfill (FRCTB) through laboratory tests. The results show that adding fibers improves the compressive strength and mechanical properties of CTB. Fiber addition effectively inhibits crack propagation and increases the peak strain of FRCTB.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Engineering, Chemical
Cheng Yun-hong et al.
Summary: Cement-based composite cementitious materials (CCMs) were prepared using mechanically ground iron tailings powder (ITP) to partially replace cement. The addition of ITP delayed the hydration process and reduced the hydration heat release rate. The n-EW and CH content of the CCM paste were lower compared to the cement paste, while the ITP reaction degree increased over time.
Article
Environmental Sciences
Gaili Xue et al.
Summary: The study utilized gold tailings and polypropylene fibers to create fiber reinforced backfill (FRB), with results showing significantly increased splitting tensile and bending strengths of the FRB. It was found that the use of FRB material is reliable for preparing artificial CTB roofs in mines, which may enhance the stability of backfilling structures in underground metalliferous mines.
INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Jiajian Li et al.
Summary: This study investigated the macro and micromechanical properties of backfilling materials made using solid wastes. The findings identified factors that affect the mechanical properties of these materials. The research results provide valuable scientific reference for the preparation of backfilling materials.
Article
Construction & Building Technology
Jiangyu Wu et al.
Summary: This paper investigates the mechanical properties and microstructure of cemented rockfill reinforced by carbon nanotubes (CNTs) and fractal aggregates. The study reveals the strengthening and deterioration mechanisms of CNT dosage on cemented rockfill, as well as the influence of aggregate size distribution.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Aiai Wang et al.
Summary: This study investigates the dynamic properties of fiber reinforced cemented tailings backfills (FRCTB) with different height to diameter ratios, and confirms through SEM and CT observations that the fibers enhance the cementation of the backfills. The results indicate that the number of fractures and failure damage decrease with increasing height to diameter ratio, while the dynamic strengths decrease with increasing strain rate.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Muhammet Sari et al.
Summary: This study investigates the quality of cemented paste fill (CPB) containing low pH and high pH pyritic tailings. The results show that CPB made with ground blast furnace slag (GBFS) has better strength compared to fly ash (FA) based CPB, regardless of the tailings' pH. The pH of pyritic tailings affects the performance of the fill material. Overall, this study provides important information and technical evidence for the engineering design of a low-cost, zero-waste, and viable mine fill system.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Shenghua Yin et al.
Summary: This study investigates the mechanical properties, failure pattern, and damage evolution of cemented sulfur tailings backfill (CSTB) through uniaxial compression tests. The effects of sulfur content and polypropylene fiber on CSTB are analyzed, and a fiber factor gamma is introduced to measure the impact of polypropylene fiber. The results show that adding polypropylene fiber effectively improves the anti-crack and anti-failure ability of CSTB.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Chemical
Haiqiang Jiang et al.
Summary: The concentration of activator/silica modulus and curing temperature are important factors affecting the engineering performance of alkali-activated slag-based cemented paste backfill (AAS-CPB). The strength of AAS-CPB is more sensitive to changes in curing temperature and consistently higher than that of CPB made of OPC. The strength evolution of AAS-CPB is strongly influenced by the combined effect of curing temperature and activator concentration/silica modulus.
Article
Materials Science, Multidisciplinary
Tugrul Kasap et al.
Summary: The use of dam tailings as a critical raw material and economic reserve has become widespread recently due to technological advancements. This study investigates the mechanical and geotechnical aspects of employing dam tailings in cemented paste backfill (CPB). The results demonstrate that the strength of CPB increases over time, except for the 56-day cured CPB containing high sulfur minerals. The basicity of CPB and the occupation of voids by hydration products contribute to the observed strength surges.
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Bruna Silva Almada et al.
Summary: Brazil is the second-largest iron ore producer in the world, generating a significant amount of iron ore tailings. Despite the heterogeneity of the tailings, they can be used as a filler addition in structural mortars, improving mechanical and durability properties. Tailings from different mines have varying physical properties and chemical/mineralogical compositions, with higher ore processing resulting in lower heterogeneity. The microstructure of the cement matrix becomes denser with the addition of tailings with higher surface area and silica content.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Environmental Studies
A. S. Vilaca et al.
Summary: By describing the parameters of interest in the iron mining activity, this study identifies the potential value and possible applications of iron ore tailings. Systematizing the decision-making process enables the valorization of iron ore processing waste, promoting circular economy and industrial symbiosis.
Article
Environmental Sciences
Qiusong Chen et al.
Summary: This study investigated the carbon-uptake characteristics and mechanical property of CPB in underground mined-out stopes. The results showed that the carbonation rate increased significantly with carbonation curing, and each ton of CPB could absorb about 78.4 kg CO2. CC affected the strength development and improved the pore structure of CPB.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Construction & Building Technology
Huan Zhang et al.
Summary: Originally developed for polymer materials, 3D printing is an encouraging technique to create versatile geometric shapes and high-precision construction elements. In this study, 3D-printed polymer structures were employed to significantly improve the ductility properties of cementitious materials like cemented tailings backfill (CTB). Various experiments were conducted to explore the dynamic splitting and crack propagation behavior of 3D-printed polymer reinforced CTBs. Results showed a strong strain rate dependence in the dynamic splitting characteristics, and the cross-shaped reinforced CTB exhibited the highest increase in tensile strength.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Aiai Wang et al.
Summary: This study explores the quality of cemented tailings backfill reinforced with diverse nano cellulose materials and finds that the addition of cellulose crystal has the best strengthening effect on the compressive strength, effectively inhibiting crack propagation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Gaili Xue et al.
Summary: This research develops an efficient acoustic emission technique to study the strength, acoustic and fractal characteristics of fiber reinforced CTB materials. The study finds that polypropylene provides the best fiber reinforcement influence.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Engineering, Mechanical
Yunqing Gu et al.
Summary: This paper reviews the research status and improvement mechanism of the tribological properties of materials based on carbon nanotubes (CNTs) as additives, analyzing the unique spatial structure and properties of CNTs and discussing the feasibility of using them as additive materials to improve tribological properties. It presents the effects of CNTs as additives on friction coefficient and wear performance from different perspectives (size effect, structure effect, concentration effect, dispersion effect, individual effect, synergistic effect) in lubricants and coatings, and prospects future research on the application of CNTs in tribology.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Environmental Sciences
Tugrul Kasap et al.
Summary: The management of tailings created during ore processing is a challenging task for mining companies and the environment. This study focuses on the usability of dam tailings in cemented mine/paste backfill (CMB/CPB), considering the physico-chemical and micro-structural aspects. The results show that the strength of backfill can be improved by increasing basicity/age, but backfills made with sulfide-rich tailings may experience a decrease in strength. Additionally, the pH values detected by chemical tests can increase or decrease over time due to acid formations and erosions, which play a key role in the deterioration of CPB physically, chemically, and microstructurally.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Aiping Cheng et al.
Summary: The deformation characteristics of cemented tailings backfill (CTB) and its implications for mine stope stability and surface subsidence were studied. A complete constitutive model was proposed based on experimental stress-strain curves to describe the nonlinear deformation characteristics of CTB. Simulation and physical model experiments were conducted to assess the safety of the backfill method. Results showed that the backfill method effectively ensured the safety of the concentrator.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Construction & Building Technology
Jian Yang et al.
Summary: The fracture evolution characteristics of fiber-reinforced backfill were explored through the analysis of amplitude correlation dimension, RA correlation dimension, and time of acoustic emission. The study found that the fiber-reinforced backfill exhibits good fractal characteristics, with the amplitude time series showing better fractal properties compared to the RA time series.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Jian Yang et al.
Summary: The crack classification of fiber-reinforced backfills was investigated using compression tests and acoustic emission analysis. A crack classification model based on the Gaussian mixed moving average filtering method was proposed and compared with the Japanese Construction Materials Standard (JCMS-III B5706) parametric analysis method. The results showed that the model is feasible and provides a new method for crack classification in mines.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Razyq Nasharuddin et al.
Summary: This study presents a systematic examination of the evolution of the uniaxial compressive strength of cemented paste backfill using various hypersaline water and synthetic brines. It is found that the systematic utilization of mixing water can contribute to improved underground mine scheduling.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Tugrul Kasap et al.
Summary: This study aims to increase the short-/long-term filling performance and reduce cement-related costs by using sand as tailings substitute and GBS or FA as OPC substitution in cementitious paste/mine backfill. The results showed that 30% sand-based CMB offered the best strengths, and strength gain was observed in sand/GBS-based backfills up to 180 days. This study provides a comprehensive report on a cost-effective and viable CMB system that will both make operations profitable/sustainable and prevent environmental damages.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yong Wang et al.
Summary: Cemented tailings backfill technology is commonly used in filling mined-out areas. Understanding the evolution of physical and mechanical properties of tailings backfill is crucial for designing a safe and efficient system. In-situ performance monitoring experiments and similarity simulation monitoring experiments were conducted to analyze the evolution mechanisms of properties such as bleeding rate, sedimentation rate, temperature, pore water pressure, total stresses, and effective stress during the curing of tailings backfill.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Chemical
Sada Haruna et al.
Summary: This paper investigates the effects of polycarboxylate superplasticizers (PCSP) on the reactivity of cemented paste backfill (CPB) containing pyrite. The results show that the addition of PCSP leads to a reduction in reactivity and improves the pore structure of CPB. High curing temperature and partial replacement of cement with fly ash and blast furnace slag also affect the reactivity of CPB.
MINERALS ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Fawen Zhang et al.
Summary: Slag-based cementitious material can effectively improve the compressive strength of cemented paste backfill and immobilize heavy metals in tailings at a certain dosage.
Article
Construction & Building Technology
Shun-man Chen et al.
Summary: This study investigated the impact of different curing stresses on the cementitious tailings backfill materials and found that increasing curing stress can improve their strength gains to some extent. Results show that suction is increased while porosity is decreased as curing stress and age are increased. The findings suggest that curing stress is crucial in the design of backfill mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yasen Li et al.
Summary: The incorporation of oxidized multi-wall carbon nanotubes (OCNT) into waterborne polyurethane (WPU) matrix through in-situ polymerization enhances the mechanical properties and thermal stability of the composite material. The OCNT not only improves the surface activity and dispersibility, but also broadens the application range due to its superior properties.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Engineering, Environmental
Shuronjit Kumar Sarker et al.
Summary: This paper discusses the consumption and recovery of strategically important critical minerals (SICMs). Currently, abandoned mine tailings and other unconventional sources are becoming important sources for recovering SICMs. However, there are technical, economic, and environmental challenges in the process of recovering SICMs from tailings.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Natalia Araya et al.
Summary: The article evaluates the water-energy nexus in copper mining companies and finds trade-offs between water and energy by analyzing the balance of mine tailing facilities and water supply to the mine site using a water reduction model. The results show that improving water reuse through dewatering technologies can enhance the water-energy nexus, reduce energy consumption, and decrease treatment and transport costs.
Article
Construction & Building Technology
Shiwen Qin et al.
Summary: This study investigated the reinforcement of cementitious backfill composite (CBC) with different types and shapes of 3D printed polymeric lattice (3D PPL) to improve its ductility. OR and NY 3D PPL reinforcement showed higher flexural strength and larger deflection in CBC specimens. 3D PPL reinforced CBC exhibited good ductility and toughness, while non-reinforced specimens showed obvious brittleness.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Iarley Loan Sampaio Libos et al.
Summary: This study investigates the influence of curing temperature and time on the shear behavior of FR-CPB. Results show that higher curing temperature enhances strain-hardening and softening behavior at early ages, while pre-peak strain hardening behavior becomes unnoticeable at advanced ages. Additionally, shear stiffness, cohesion, dilation angle, and brittleness index of FRCPB increase with increasing curing temperature.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Shuai Cao et al.
Summary: This study investigated the relationship between compressive strength and internal crack formation in cement-fiber-tailings matrix composites. The results showed that the addition of fibers significantly increased the strength and toughness of the composites, reducing the interconnection between pores and increasing particle packing density. Different types of fibers led to increased crack widths and volumes, resulting in samples exhibiting various failure patterns.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Nan Zhou et al.
Summary: The experimental investigation in this paper shows that incorporating glass fibers can improve the mechanical properties of cemented backfill, with the combination of 6 mm length and 1.0% ratio identified as the best. Compared to backfill without glass fibers, the compressive, tensile, and shear strength values of the backfill with glass fibers added are significantly increased.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Gaili Xue et al.
Summary: This study investigated the dynamic properties of cemented tailings backfill (CTB) containing polypropylene fibers under dynamic loading, and found that fiber reinforcement can enhance the dynamic strength and inhibit crack development during failure. The findings provide important insights for the overall design of backfilling and cost reduction.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
Natalia Araya et al.
Summary: Re-processing mine tailings to obtain critical raw materials can reduce new mining activities, but it requires large industrial installations and specialized technologies. When making investment decisions in new mining projects, it is crucial to consider uncertainties and risks, and develop processes and technologies that can lower capital expenditure.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Chemical
Ibrahim Cavusoglu et al.
Summary: This study investigated the effect of sodium silicate on early mechanical and microstructure properties of cemented coal fly ash backfill. Results showed that sodium silicate can improve the short-term strength of CCB and reduce the setting time, contributing to efficiency in coal mining operations.
Article
Geochemistry & Geophysics
Zhiqiang Huang et al.
Summary: The study found that the ideal ratio of fly ash and desulfurized gypsum as backfill materials, as well as the corresponding compressive strength values. It was observed that increasing the proportion of desulfurized gypsum led to a decrease in the compressive strength of the backfilling materials, with the main failure modes being tensile and shearing cracks.
Article
Construction & Building Technology
Jiajian Li et al.
Summary: The utilization of industrial solid wastes for mine filling addresses environmental risks and reduces operational costs, while enhancing ground support in underground mining. The mechanical and microstructural characteristics of cementitious backfill with fly ash, desulfurization gypsum, and steel slag were studied in this research, revealing the optimal waste ratio for improved strength performance. The study provides theoretical support for using solid waste for backfilling and suggests significant savings in cement-related costs without compromising safety.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Junxing Liu et al.
Summary: The study found that at the optimal CNT/TNT ratio, the hybrid carbon nanotube and titanium dioxide nanotube can significantly improve the mechanical properties and hydration rate of cement paste. Using multi-scale hybrid CNT/TNT can be a new nano reinforcing method for various cementitious materials.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Gaili Xue et al.
Summary: This study investigated the crack resistance and post-peak toughness of fiber reinforced cemented tailings backfill composites, revealing the significant impact of fiber type, content, solid content, and cement to-tailings ratio on the bending strength. The study also established a numerical model to analyze crack propagation mechanism and evolution law, providing valuable insights for structural and operational design considerations in underground metal mines.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Zhiqiang Huang et al.
Summary: This study found that the addition of fibers can significantly improve the flexural performance of cemented tailings backfill, and the variation of fiber content can affect the material's mechanical properties and residual strength. The combined fibers play an important role in impeding crack propagation, making a positive contribution to enhancing the bending performance of FRCTB.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Shenghua Yin et al.
Summary: The study discusses the use of tailings as backfilling material in the presence of mixed bacteria, analyzing the relationship between mixed bacteria and compressive strength, size variation, and water-holding capacity. Results show that an increased proportion of mixed bacteria leads to enhanced compressive strength, reduced size variation, and lower water-holding capacity in cemented tailings backfill specimens. The technique of using mixed bacteria to reduce binder consumption shows economic benefits, with the possible reaction mechanism involving the promotion of precipitation to reduce cracks in specimens.
JOURNAL OF HAZARDOUS MATERIALS
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Review
Construction & Building Technology
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L. Senff et al.
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Dan Zhang et al.
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(2019)
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Gongda Lu et al.
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(2019)
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Paivi H. -M. Kinnunen et al.
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(2019)
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Rui M. Novais et al.
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P. Tzampoglou et al.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
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Xia Cui et al.
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(2017)
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Erol Yilmaz et al.
GOSPODARKA SUROWCAMI MINERALNYMI-MINERAL RESOURCES MANAGEMENT
(2012)
