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

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 106839 - 106839

Published: Jan. 1, 2025

Language: Английский

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Sustainable Soil Reinforcement by Maximizing Geotechnical Performance with Rice Husk Ash in Subgrade Layers

Materials, Journal Year: 2025, Volume and Issue: 18(4), P. 873 - 873

Published: Feb. 17, 2025

Soil reinforcement using rice husk ash and cement is emerging as an effective method for enhancing geotechnical performance in subgrade layers, offering environmentally friendly, stable, durable, cost-efficient solution. This study investigates sustainable soil by maximizing applying RHA layers. Experimental evaluations were conducted California Bearing Ratio tests, Scanning Electron Microscopy, Energy-Dispersive X-ray Spectroscopy. The research focused on three configurations: upper, lower, double each treated with varying proportions of (2%, 4%, 6%) 6%). findings demonstrated significant improvements bearing capacity across all layers combinations compared to untreated control specimens. Notably, the layer 6% + achieved highest CBR value 21.30 KPa, followed configuration 2% cement, which recorded a 19.62 KPa. specimen containing 4% 18.62 These results highlight effectiveness material enhancement applications.

Language: Английский

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Effect of carbon capture on carbide slag-steel slag shape-stable phase change materials for thermal energy storage

Renewable Energy, Journal Year: 2024, Volume and Issue: 235, P. 121251 - 121251

Published: Aug. 30, 2024

Language: Английский

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Recycled glass powder and calcium carbide residue geopolymer to stabilise silty sand soil: mechanical performances and statistical analysis

Heliyon, Journal Year: 2025, Volume and Issue: 11(1), P. e41738 - e41738

Published: Jan. 1, 2025

Geopolymerization is a soil improvement technique widely used for waste management in recent years. This study explores the potential of geopolymerization roadbed using materials. Recycled glass powder (RGP) and calcium carbide residue (CCR) were investigated as precursors alkaline activators, respectively, to enhance properties silty sand soil. X-ray Fluorescence (XRF) analysis confirmed presence silicon dioxide RGP oxide CCR. The California Bearing Ratio (CBR) test evaluated effectiveness treatments with varying CCR contents (2-5%) compared traditional methods (2.5%lime/2.5%cement + RGP). influence RGP/CCR content, soaking conditions, curing time on stabilised was assessed. geopolymer derived from significantly improved load-bearing capacity untreated (unsoaked CBR: 85.5 % vs. 45.0 at 28 days). Notably, soaked CBR increased fourfold after days optimal content (28.7 7.5 %). Statistical that stabiliser sample conditions impacted strength development. These findings demonstrate cement sustainable strengthening alternative treatment, promoting utilisation infrastructure

Language: Английский

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Assessment on eco-solidified alkali residue reinforced soft soils for intelligent subgrade constructions

Transportation Geotechnics, Journal Year: 2025, Volume and Issue: unknown, P. 101516 - 101516

Published: Feb. 1, 2025

Language: Английский

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Study on the compressive performance and numerical simulation of fiber-reinforced geopolymer stabilized aeolian sand subgrade materials

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 15, 2025

To enhance the compressive strength and toughness of geopolymer-stabilized aeolian sand subgrade materials, to promote utilization resources, polypropylene fibers are incorporated into geopolymer solidified materials. Unconfined tests conducted on specimens prepared under different mixing schemes. The formation mechanism fiber toughening crack resistance revealed at microscopic level using SEM (Scanning Electron Microscopy) technology. finite element numerical simulation software FLAC3D 6.0 is used establish a model highway, analyzing dynamic response maximum displacement materials various vehicle speeds in conditions optimal length amount fiber. Research results show that when NaOH content 1.5%, 0.5%, 12 mm, it constitutes mix ratio for specimen, with peak UCS (Unconfined Compressive Strength) residual reaching their values. Slag fly ash form three-dimensional topological network structure action alkaline solution, which promotes bonding between particles matrix. within matrix effectively inhibits dislocation suppresses development expansion cracks, playing key role enhancing specimen. Using software, was found road subbase material fiber-reinforced stabilized material, impact area significantly smaller than sand. research provide reference practical application engineering.

Language: Английский

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Development of low-carbon cemented phosphogypsum backfill utilizing carbide slag and industrial solid wastes: Workability, mechanical properties, and microstructure

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116881 - 116881

Published: May 1, 2025

Language: Английский

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Mechanism of Rapid Curing Pile Formation on Shoal Foundation and Its Bearing Characteristic

Materials, Journal Year: 2024, Volume and Issue: 17(10), P. 2416 - 2416

Published: May 17, 2024

This study explores the application effect of new non-isocyanate polyurethane curing agent on rapid mechanism and bearing characteristics piles in beach foundations. Through laboratory tests field tests, effects physical mechanical properties sand were systematically analyzed, including compressive strength, shear elastic modulus, water content cement–sand mass ratio after investigated. The results show that introducing a significantly improves sand, cohesion internal friction angle increase exponentially with ratio. In addition, leads to decrease strength solidified microstructure analysis reveals change bonding between gel particles. static load single pile groups verify effectiveness solidification foundations reveal significant influence length diameter capacity. provides theoretical basis technical support for reinforcement tidal flat important guidance related engineering applications.

Language: Английский

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The curing mechanism and empirical model for the marine organic soft clay stabilized with calcium carbide residue and silica fume under the optimal ratio

Acta Geotechnica, Journal Year: 2024, Volume and Issue: 20(2), P. 683 - 706

Published: Nov. 4, 2024

Language: Английский

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Optimal Utilization of Biochar, Polyacrylamide, and Straw Fiber for Subgrade Stabilization of Forest Roads

Forests, Journal Year: 2024, Volume and Issue: 15(12), P. 2079 - 2079

Published: Nov. 25, 2024

Subgrade stabilization is crucial for forest road construction, especially in Northeast China and the Russian Far East, with great economic growth potential. This study explored a novel green solution of integrating biochar (BC), polyacrylamide (PAM), straw fiber (SF) form ternary composite stabilizing subgrade soil cold regions. Using central design-based response surface methodology, optimal mix ratio design was obtained, stabilizer designated as BPS. Afterward, performance BPS studied by conducting an unconfined compression strength (UCS) test. The results showed that optimum composition BC:PAM:SF stood at 81:9:10. UCS deformation modulus 3% 28 days reached 565.42 kPa 17.24 MPa, respectively, which were 3.36 6.05 times higher than those untreated samples. BPS-treated also possessed better resistance to freeze–thaw cycles. freezing–thawing-induced loss 49.3% lower natural soil. Moreover, empirical models BPS-stabilized soil, well its relationships modulus, established validated data literature. Finally, “filling, cementing, reinforcing” mechanism elucidated scanning electron microscopy analysis.

Language: Английский

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