Innovative reinforcement: Assessing strength features of waste microplastics reinforced backfills in sustainable mine waste management

Construction and Building Materials, Год журнала: 2025, Номер 460, С. 139744 - 139744

Опубликована: Янв. 1, 2025

Язык: Английский

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Effect of content of defluorinated solid waste on macroscopic strength and microstructural evolution of cemented tail filling composites

Construction and Building Materials, Год журнала: 2024, Номер 436, С. 136921 - 136921

Опубликована: Июнь 7, 2024

Язык: Английский

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Microstructure evolution and mechanical behavior of foamed cement-based tail backfills under varying fiber types and concentrations

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(39), С. 52181 - 52197

Опубликована: Авг. 14, 2024

Язык: Английский

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Influence of alkaline agents with different contents on strength features, energy dissipation and microscopic behavior of cement-based high‑sulfur tailings fill

Powder Technology, Год журнала: 2024, Номер 444, С. 120042 - 120042

Опубликована: Июль 3, 2024

Язык: Английский

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Evaluating 3D-Printed Polylactic Acid (PLA)-Reinforced Materials: Mechanical Performance and Chemical Stability in Concrete Mediums

Applied Sciences, Год журнала: 2025, Номер 15(4), С. 2165 - 2165

Опубликована: Фев. 18, 2025

The optimization and evaluation of 3D-printed polylactic acid (PLA) materials for reinforcing concrete elements present a promising avenue advancing sustainable construction methods. This study addresses the challenges associated with PLA’s dual nature—biodegradable yet mechanically limited long-term applications—while leveraging its potential to enhance reinforcement. research identifies gaps in understanding mechanical chemical behavior alkaline environments, particularly interactions matrices. To bridge this gap, four distinct PLA variants (high-impact PLA, engineering electrical ESD gypsum PLA) ABS (acrylonitrile butadiene styrene) were subjected dissolution tests NaOH solutions (pH 12 12.55) under three-point bending using digital image correlation (DIC) technology. Test specimens prepared optimized 3D printing strategies ensure structural consistency embedded beams analyze their reinforcement potential. Force–displacement data GOM ARAMIS measurements revealed significant differences responses, peak loads ranging from 0.812 kN 1.021 (electrical PLA). Notably, exhibited post-failure load-bearing capacity, highlighting capability. Chemical material-specific degradation patterns, high-impact Gypsum showing accelerated surface changes precipitation phenomena. Observations indicated white crystalline precipitates, likely lime (calcium hydroxide—Ca(OH)2), residue (sodium hydroxide—NaOH), or material-derived residues formed on near elements, suggesting interactions. These findings underline critical role material selection achieving effective PLA–concrete integration. While environmental sustainability aligns industry goals, reliability exposure remains challenge. concludes that demonstrates highest application reinforced concrete, provided stability is managed, as value (1.021 kN) showed 25.7% higher capacity than (0.812 did not lose any tests. work advances alternative construction, offering insights future innovations applications.

Язык: Английский

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Grain-size composition effect on flexural response and pore structure of cementitious tail-rock fills with fiber reinforcement

Developments in the Built Environment, Год журнала: 2024, Номер unknown, С. 100558 - 100558

Опубликована: Окт. 1, 2024

Язык: Английский

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Mechanics and microstructure analysis of geopolymer utilizing ilmenite tailing and metakaolin powder as alkali-activated materials

Case Studies in Construction Materials, Год журнала: 2024, Номер 21, С. e03567 - e03567

Опубликована: Июль 24, 2024

Geopolymers derived from bulk solid waste are considered ideal substitutes for cement-based materials in developing environmentally friendly construction materials. The utilization of tailings powder as a precursor alkali activation geopolymer can enhance the mechanical characteristics geopolymer. This study conducted extensive experimental studies on compressive strength, flexural SEM microstructure, thermogravimetric curve, and variable influence alkali-activated ilmenite (IT) mortar, using liquid-solid ratio number variables. An analysis was mortar's characteristics, machine-learning properties. Furthermore, impact different atomic ratios structure mortars also examined. test results revealed that metakaolin-iron titanium geopolymer, when doped with 10 % tailings, exhibited strength 72.30 MPa at 14 days. Similarly, reached 4.76 days 30 tailings. XRD showed Magnesiohornblende particles Mg-F-A-S-H C-A-S-H gel had positive negative correlations, respectively, doping level. TG indicated specimens exhibit enhanced thermal stability following treatment combining metakaolin formed Me-(F)-A-S-H gels. examination surface porosity, pore shape, unreacted material determined adding increased Si/Al Fe/Si ratios, enhancing transformation lamellar to three-dimensional disordered mesh structure. Additionally, contributed significant amount Ca, elevating Ca/Na (0.1−0.6) triggering calcium precipitation within Ca/Si range 0.03−0.2. increase led decrease sample's curing time extended. Based prior research application Gray Wolf optimization algorithm extreme learning, clear correlation identified between strength. increasing geopolymer's while an extended negatively correlated mixing deemed insignificant did not exceed 20 %. may derive environmental industrial benefits improvement their properties, stability, machine learning.

Язык: Английский

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Utilization of waste rock from a low-carbon perspective: Mechanical performance analysis of waste rock-cemented tailings backfill

Journal of CO2 Utilization, Год журнала: 2025, Номер 94, С. 103058 - 103058

Опубликована: Март 5, 2025

Язык: Английский

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Effect of 3D-printed polymer with negative Poisson's ratio structure on the mechanical characteristics of cemented tailings backfill

Case Studies in Construction Materials, Год журнала: 2025, Номер unknown, С. e04665 - e04665

Опубликована: Апрель 1, 2025

Язык: Английский

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Thermo-hydro-mechanical response of cementitious tailings fill to low humidity and ambient temperature interference

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

Опубликована: Ноя. 29, 2024

Язык: Английский

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