Nano-bentonite as a sustainable enhancer for alkali activated nano concrete: Assessing mechanical, microstructural, and sustainable properties

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 20, P. e03213 - e03213

Published: April 28, 2024

Language: 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, Journal Year: 2024, Volume and Issue: 21, P. e03567 - e03567

Published: July 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.

Language: Английский

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Alkali-fused lithium slag as a substitute for slag in one-part geopolymers: Mechanism of reactivity enhancement and microstructure

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 442, P. 137696 - 137696

Published: July 31, 2024

Language: Английский

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Fully Recycled Syntheses Using Recycled Concrete Powder, Oyster Shell and Wood Powder: Effect of Combined Ground Treatment on Mechanical Strength and FTIR, XRD, and SEM Characterization

Open Journal of Composite Materials, Journal Year: 2025, Volume and Issue: 15(01), P. 44 - 57

Published: Jan. 1, 2025

Language: Английский

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Geopolymers Manufactured by the Alkali Activation of Mining and Ceramic Wastes Using a Potential Sustainable Activator from Olive Stone Bottom Ashes

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 688 - 688

Published: Feb. 4, 2025

The reuse of by-products as alternative raw materials to traditional construction is required in order ensure sustainable development the sector and a significant important focus fields science. This study developed geopolymers using from mining, ceramics, olive industries, including slate stone cutting sludge (SSCS) chamotte (CH) aluminosilicate sources, biomass bottom ash (OSBA) an alkaline activator with sodium silicate. A key novelty research lies use SSCS, underexplored by-product geopolymerization studies, viable source. were prepared varying weight ratios CH, OSBA/Na₂SiO₃ (1.7, 1.9, 2.2, 2.4). Physical mechanical tests determined optimal formulation, while FTIR SEM analyses revealed material’s chemical structural evolution. analysis detected quartz carbonate phases, indicating incomplete dissolution formation during calcination. dense microstructure reduced porosity enhanced samples higher OSBA content. geopolymer (60% OSBA, 30% ratio 2.2) achieved compressive strength 33.1 MPa after 28 days. These findings demonstrate feasibility producing promoting industrial alternatives conventional binders.

Language: Английский

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STUDY OF OLIVE POMACE BOTTOM ASHES AS A SUSTAINABLE ALKALINE ACTIVATOR IN THE SYNTESIS OF GEOPOLYMERS

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112383 - 112383

Published: March 1, 2025

Language: Английский

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Pumicite-Based Geopolymer Optimization for Sustainable Soil Stabilization

Journal of Materials in Civil Engineering, Journal Year: 2025, Volume and Issue: 37(6)

Published: March 24, 2025

Language: Английский

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Taguchi experimental matrix optimization of two plant-based concretes with sargassum (Sargassum fluitans) and peanut shell (Arachis hypogaea) aggregate

Deleted Journal, Journal Year: 2025, Volume and Issue: 2(1)

Published: March 26, 2025

Language: Английский

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Tailoring mechanical properties of alkali activated slag-electric furnace nickel slag composite system through Ca/Si and Si/Al ratios

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: 22, P. e04635 - e04635

Published: April 14, 2025

Language: Английский

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Enhancing impact resistance and thermal stability of alkali-activated concrete with nanomaterial integration: a sustainable approach for construction

Journal of Structural Fire Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 19, 2025

Purpose This study aims to explore the potential of alkali-activated concrete (AAC) as a sustainable alternative ordinary Portland cement (OPC), addressing critical need reduce carbon dioxide (CO2) emissions associated with production. By incorporating nanomaterials (NMs), such nano-fly ash (nFA), nano-ground granulated blast furnace slag (nGS) and nano-bentonite (nBT), research highlights enhanced mechanical properties, durability sustainability nano-engineered AAC. Design/methodology/approach examines influence various NMs, including nFA, nGS nBT, on impact resistance nano (AANC) when subjected elevated temperatures ranging from 200 °C 800 °C. The results reveal notable changes in energy, weight loss, crack patterns, spalling behavior capillary water absorption. Microstructural were examined using scanning electron microscopy (SEM), predictive models for energy residual developed validated. Findings addition NMs significantly influenced workability, compressive strength (CS) rebound number concrete. ranged 37.25 60.37 MPa at 28 days, cracking failure numbers observed NM-incorporated specimens. At °C, specimens demonstrated increased dissipation altered absorption rates, particularly nBT-added samples. SEM analysis revealed microstructural modifications, formation microcracks phase decomposition. Predictive showed strong correlation experimental data, R2 values between 0.91 0.95. Originality/value underscores NM-enhanced AANC improve thermal stability, offering promising solution construction. findings contribute reducing environmental footprint production while maintaining high-performance standards, emphasizing role nanotechnology advancing green construction practices.

Language: Английский

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