Electrolytic manganese residue-carbide slag-phosphorus slag ternary clinker-free backfill material: Synergistic mechanism and performance evolution

Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 106839 - 106839

Опубликована: Янв. 1, 2025

Язык: Английский

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Effects of different activators on workability, mechanical properties and microstructure of alkali-activated slag-copper slag

Construction and Building Materials, Год журнала: 2025, Номер 463, С. 140151 - 140151

Опубликована: Янв. 25, 2025

Язык: Английский

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Exploration of the use of superfine tailings and ternary solid waste-based binder to prepare environmentally friendly backfilling materials: hydration mechanisms and machine learning modeling

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(2), С. 115662 - 115662

Опубликована: Янв. 30, 2025

Язык: Английский

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Fire resistance performance of clinker-free cementitious materials produced from phosphorus slag, calcium carbide slag, desulfurization gypsum, and metakaolin

Construction and Building Materials, Год журнала: 2025, Номер 467, С. 140400 - 140400

Опубликована: Фев. 13, 2025

Язык: Английский

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Sulphate influence on strength development of cemented paste backfill with superplasticizer under field-like curing conditions

Construction and Building Materials, Год журнала: 2024, Номер 451, С. 138788 - 138788

Опубликована: Окт. 20, 2024

Язык: Английский

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Study on Mechanical Strength, Volume Stability, and Hydration Mechanism of Cemented Tailings Backfill with Plastic Expansive Agent

Mining Metallurgy & Exploration, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

Язык: Английский

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Study on properties and hydration mechanism of green alkali-activation lithium slag composite cementitious materials

Construction and Building Materials, Год журнала: 2025, Номер 473, С. 140966 - 140966

Опубликована: Март 31, 2025

Язык: Английский

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Effects of fly ash vitrified slag (FVS) dosage and alkali content on the reaction of alkali-activated material (AAM)

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 112507 - 112507

Опубликована: Апрель 1, 2025

Язык: Английский

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Optimization of Proportions of Alkali-Activated Slag–Fly Ash-Based Cemented Tailings Backfill and Its Strength Characteristics and Microstructure under Combined Action of Dry–Wet and Freeze–Thaw Cycles

Materials, Год журнала: 2024, Номер 17(20), С. 4945 - 4945

Опубликована: Окт. 10, 2024

To enhance the application of alkali-activated materials in mine filling, cemented tailings backfill was prepared using slag, fly ash, sodium silicate, and NaOH as primary constituents. The effects raw material type dosage on were examined through a single-factor experiment. Additionally, response surface methodology (RSM) utilized to optimize mixing ratios backfill, with focus fluidity compressive strength key objectives. evolution quality under combined dry–wet freeze–thaw (DW-FT) cycles analyzed. hydration products, microstructure, pore characteristics specimens analyzed X-ray diffraction (XRD), scanning electron microscopy energy dispersive spectroscopy (SEM-EDS), nitrogen adsorption tests (NATs) across varying cycles. results demonstrate that optimal composition includes 47.8% 6.10% alkali equivalent, 1.44 silicate modulus. macroscopic behavior DW-FT coupling followed this progression: initiation → expansion crack formation propagation structural damage. After minor initial increase, steadily decreased. Microscopic analysis revealed decline internal cementation products deterioration structure causes reduction. Thus, can cause significant erosion backfill. technical solutions presented paper offer reference for solid waste utilization provide valuable insights into durability coupling.

Язык: Английский

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Study on the properties of alkali-activated ferrochrome slag paste filling materials prepared from multiple industrial solid wastes

Energy Sources Part A Recovery Utilization and Environmental Effects, Год журнала: 2024, Номер 46(1), С. 14355 - 14367

Опубликована: Окт. 20, 2024

The enormous utilization potential of industrial solid waste in cemented paste backfill (CPB) materials has attracted considerable interest. To solve the treatment challenges ferrochrome slag (FS), a green (FS-CPB) composed FS, desulfurization gypsum (DG) and granulated blast furnace (GBFS) was proposed study. setting time, slump, uniaxial compressive strength (UCS), microstructure leaching behavior FS-CPB were systematically investigated. results indicated that FS DG showed retarding properties, while time first decreased then increased with increase polycarboxylate superplasticizers (PCE) sodium silicate dosage. slump positively correlated However, addition PCE can improve fluidity properties. optimum UCS values (3 d: 0.92 MPa; 7 2.43 14 3.19 28 4.58 MPa) obtained 6% silicate. Moreover, primary hydration products ettringite, C-S-H gels N-A-S-H gels. concentrations total Cr Cr(VI) satisfied Class Ι water quality standard limits (≤1.5 mg∙L−1) GB 8978–1996 III (≤0.05 14,848-2017, respectively. research this paper provide new options for cement substitutes mining companies guide large-scale application FS.

Язык: Английский

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