Enhancing microbial-induced carbonate precipitation (MICP) sand consolidation with alkali-treated jute fibers

Powder Technology, Год журнала: 2024, Номер 441, С. 119845 - 119845

Опубликована: Май 1, 2024

Язык: Английский

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Fiber-reinforced microbially induced carbonate precipitation (MICP) for enhancing soil stability: Mechanisms, effects, and future prospects

Journal of Building Engineering, Год журнала: 2024, Номер 94, С. 109955 - 109955

Опубликована: Июнь 14, 2024

Microbially induced calcium carbonate precipitation (MICP) is an emerging technology proposed for soil improvement in recent years. It has environmental protection and sustainability advantages. Reinforcing fiber can effectively improve the flexibility of MICP-treated sandy material. The MICP synergistic solidified sand research results have attracted significant attention recently. This paper introduces reaction mechanism curing method MICP, including injecting soaking, spraying, pre-mixing, single-phase, step-by-step injection methods. summarizes effect various fibers, jute fiber, animal polypropylene carbon polyester polyvinyl alcohol (PVA), on sand. project summarized following results: 1) two-step improves uniformity distribution sample. 2) Adding provided more adsorption sites bacteria increased nucleation sites; 3)The fibrous network structure sample, combined with 'bridge' effect, efficient preventing cracks from expanding samples; 4) friction cohesion between itself column overall stability sample; 5) coupling sand, generated tensile strength (TS) specimens; 6) For two factors content length, unconfined compressive (UCS) greater than length. Fiber type influenced Meanwhile, development prospect was pointed out, influence pretreatment modification effect; mixed, uniform method; 3) mixing fibers properties cured specimens.

Язык: Английский

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Study on the strength improvement mechanism of fine-grained iron tailings cemented backfill after high temperature calcining

Minerals Engineering, Год журнала: 2025, Номер 227, С. 109259 - 109259

Опубликована: Апрель 3, 2025

Язык: Английский

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Utilizing ARTP Mutagenized Calcifying Microorganisms to Drive Low-Urea Biocementation: Enhancing Strength and Reducing Ammonium Waste Emissions

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116923 - 116923

Опубликована: Май 1, 2025

Язык: Английский

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Characterizing mechanical and multiscale porosity features of cementitious high sulfur tailings backfill using CT technology

Process Safety and Environmental Protection, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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Strength Development of Cemented Paste Backfill with CaCl2 and NaCl in Above-Zero Underground Environments

Geotechnical and Geological Engineering, Год журнала: 2024, Номер 42(7), С. 5927 - 5945

Опубликована: Июль 16, 2024

Язык: Английский

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Evolutionary patterns and microscopic mechanisms of strength in mine tailings backfilled with waste glass

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Янв. 3, 2024

In order to promote the sustainable use of resources and reduce waste glass tailings resources. The present study focuses on a fluorite mine as research subject, utilizing coarse tailings, fine cement substitute-curing agent, recycled primary raw materials. It investigates changes in compressive strength tailing with varying sand- binder ratios content at 3-day, 7-day, 28-day intervals when filling slurry concentration is set 77% ratio maintained 2:1. findings indicate that there minimal impact test blocks using sand 4:1 below 10%. However, once exceeds 10%, significant decline occurs. Scanning electron microscope (SEM) images reveal ettringite crystal formation both 0% 25% due high levels Na

Язык: Английский

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Two factors facilitate the cost-effective and harmless cementation of rare earth slags through MICP technology: carbonic anhydrase bacteria and endogenous calcium ions

Journal of environmental chemical engineering, Год журнала: 2024, Номер unknown, С. 114434 - 114434

Опубликована: Окт. 1, 2024

Язык: Английский

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Heat development in cemented tailings backfill modeled by a coupled electro-chemical-thermal model

Thermal Science and Engineering Progress, Год журнала: 2024, Номер 57, С. 103111 - 103111

Опубликована: Дек. 9, 2024

Язык: Английский

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