Effect of 3D printed skeleton shapes on strength behavior, stress evolution and microstructural response of cement-based tailings backfills

Construction and Building Materials, Год журнала: 2024, Номер 432, С. 136699 - 136699

Опубликована: Май 21, 2024

Язык: Английский

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Analyzing microscopic structure and macroscopic strength behavior of cement-based tail fills incorporating fiber by X-ray CT scanning technique

Construction and Building Materials, Год журнала: 2024, Номер 440, С. 137453 - 137453

Опубликована: Июль 13, 2024

Язык: Английский

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Effect of magnetic induction intensity and steel fiber rate on strength improvement of cementitious filling composites

Construction and Building Materials, Год журнала: 2024, Номер 428, С. 136417 - 136417

Опубликована: Апрель 27, 2024

Язык: Английский

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Microstructural evolution and strengthening mechanism of aligned steel fiber cement-based tail backfills exposed to electromagnetic induction

International Journal of Minerals Metallurgy and Materials, Год журнала: 2024, Номер 31(11), С. 2390 - 2403

Опубликована: Сен. 20, 2024

Язык: Английский

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Multiscale study on the compressive performance of diverse solid waste backfill bodies

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Год журнала: 2025, Номер 11(1)

Опубликована: Янв. 16, 2025

To create green, low-energy self-compacting backfill materials, this study utilizes aeolian sand, slag, red mud, and calcium carbide slag to prepare diverse solid waste materials in synergy. Additionally, a suitable amount of polypropylene fibers is added enhance its toughness. During the experimental process, unconfined compressive strength tests were conducted using digital speckle technique. Computerized tomography scanning technology was employed for internal 3D visualization samples. Material difference mechanisms characterized SEM–EDS XRD microscopic techniques. Finally, discrete element numerical simulation utilized analyzing evolution sample failure. The results show that with increase doping, specimen UCS increases then decreases, when doping 14%, reaches local maximum 3.552 MPa; water–solid ratio, gradually ratio 0.3, minimum 3.26 MPa. With mass percentage calcium-silicon multi-solid matrix first increased decreased, micro-morphology included lamellar, block, rod structures; transformed, pore defects between cementitious increased. porosity within unit exceeds decreases; gradual increases, number holes 208 range 0.24. Digital technique PFC together elucidate sample's failure process crack mechanism. Initially, voids are compacted, propagation slow. As load peak, localized deformation macroscopic formation occur sample. After peak load, exhibits significant displacement deformation, cracks significantly. research findings can provide reference design construction pipelines trenches.

Язык: Английский

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Comparative study of interfacial debonding mechanism of fiber pull-out in magnesium phosphate cementitious composites

Journal of Building Engineering, Год журнала: 2025, Номер unknown, С. 111901 - 111901

Опубликована: Янв. 1, 2025

Язык: Английский

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Study on the mechanical properties and failure mechanism of polypropylene fiber–rubber-modified solid waste-based backfill

Journal of Materials Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Язык: Английский

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Mechanical properties of glass fiber-reinforced backfills under different proportion conditions

Archives of Civil and Mechanical Engineering, Год журнала: 2024, Номер 24(3)

Опубликована: Июль 8, 2024

Язык: Английский

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Physical Modeling of the Geotechnical Behaviour of Cemented Backfill Plug with and Without Nanoparticles Under Simulated Field Overburden Pressure

Geotechnical and Geological Engineering, Год журнала: 2024, Номер 43(1)

Опубликована: Ноя. 29, 2024

Язык: Английский

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Investigation into debonding of single polypropylene fiber pullout in concrete using X-ray microtomography and mechanically regularized digital volume correlation

Materials and Structures, Год журнала: 2024, Номер 57(8)

Опубликована: Сен. 22, 2024

Язык: Английский

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