Agriculture models for restoring degraded land to enhance CO2 biosequestration and carbon credits in the Vindhyan region of India

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 929, P. 172661 - 172661

Published: April 21, 2024

Language: Английский

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Using machine learning and experimental study to correlate and predict accelerated aging with natural aging of GFRP composites in hygrothermal conditions

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 438, P. 137264 - 137264

Published: June 29, 2024

Language: Английский

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Influence of Si/Al molar ratio and ca content on the performance of fly ash-based geopolymer incorporating waste glass and GGBFS

Construction and Building Materials, Journal Year: 2023, Volume and Issue: 411, P. 134741 - 134741

Published: Dec. 31, 2023

This study delved into the utilization of waste glass powder (WGP) and ground granulated blast-furnace slag (GGBFS) as a binder cullet (WGC) fine aggregate in fly ash (FA) based geopolymer concrete. The inherent characteristics WGP, WGC, FA GGBFS can be significantly altered by multiple factors such sources, combustion temperatures, particle size, impurity level. To offset inconsistent listed materials, this provides universal index to quantify evaluate its reactivity used aluminosilicate precursor feedstock Ten distinct groups were examined: five WG replaced at varying percentages (0, 10, 20, 30, 40%), was sand substitute with different ratios (20, 40, 60, 80%). Alkali leaching tests conducted on determine dissolubility dissolution rate reactive silica (Si) calcium (Ca) within 3 h. efficiency demonstrated decent correlations mechanical durability properties resultant FA-based geopolymer. Leaching demonstrate that Ca from readily leaches out reacts both ambient oven curing, while Si only exhibits activity primarily high-temperature environments. Overall, improved up 50% 30% compressive strength water absorption, respectively. Moreover, alkali test, most effective molar (Si/Al=3.5–4) highest (60–70 MPa), verified intensively using scanning electron microscopy–energy-dispersive spectroscopy (SEM-EDS). Lastly, revealed WGC size 20 µm also leached significant amount geopolymerization process.

Language: Английский

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Generation and evolution mechanisms of asphalt aging under the combined effects of intense UV radiation and large temperature variations

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 438, P. 136786 - 136786

Published: June 22, 2024

Language: Английский

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Investigation of the fracture behavior of cemented waste rock-tailing backfill by digital image correlation technique and discrete element modeling

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 428, P. 136367 - 136367

Published: April 24, 2024

Language: Английский

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The cementitious properties of alkali-activated municipal solid waste incineration fly ash-phosphorus slag-secondary aluminum dross matrix composites and the mechanism of solidification of heavy metals

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 438, P. 137254 - 137254

Published: June 28, 2024

Language: Английский

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Performance of Confined Concrete-Filled Aluminum Tube Pile Groups under Combined Loading

Geotechnical and Geological Engineering, Journal Year: 2025, Volume and Issue: 43(2)

Published: Jan. 2, 2025

Abstract Recent advancements in foundation engineering have introduced composite piles, specifically the Confined Concrete-Filled Aluminum Tube (CCFAT) pile system, which can effectively support both vertical and lateral loads. However, behavior of piles under combined loading conditions remains largely unexplored. This research investigates performance CCFAT groups installed loose sand subjected to Experimental studies focused on 1 × 2 configurations with varying slenderness ratios (L m /d) 10, 15, 20. These experiments were used validate Finite Element (FE) models. Numerical simulations then conducted for new configurations, including 3 gather additional data. Results indicated that ultimate capacity increased L /d ratio. Under loading, also improved higher loads a given The laboratory findings showed near-linear relationship between capacities Failure mechanisms identified through numerical revealed experienced punching shear failure, indicative confined deep flow behavior. specific loads, resulted soil compression right tension left, causing heave depression zones, significant yielding, wedge formations. Sensitivity analyses highlighted that, pure internal friction angle Young’s modulus significantly affect group behavior, while at 80% load (P uv ), dilatancy angles greater impact than other parameters. Based these findings, expressions proposed calculate ulv ) conditions, integrating influencing factors.

Language: Английский

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Experimental study on the durability and microstructural characteristics of lime-stabilized silty clay in seasonally frozen region

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 463, P. 140158 - 140158

Published: Jan. 26, 2025

Language: Английский

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3D mesoscale discrete element modeling of hybrid fiber-reinforced concrete

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 447, P. 138006 - 138006

Published: Aug. 29, 2024

Language: Английский

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Optimization of mechanical property and microstructure for magnesium phosphate cement-based canvas using borax

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 438, P. 137136 - 137136

Published: June 20, 2024

Language: Английский

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