Engineering performance and environmental assessment of sustainable concrete incorporating nano silica and metakaolin as cementitious materials

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 9, 2025

Abstract The carbon footprint associated with cement production, coupled depletion of natural resources and climate change, underscores the need for sustainable alternatives. This study explores effect metakaolin (MK) nano-silica (NS) on concrete’s engineering performance environmental impact. Initially, compressive, tensile, flexural strength tests, along durability assessments like water absorption, sorptivity, rapid chloride permeability, resistance to acid sulphate attacks, were conducted. Later, X-ray Diffraction spectroscopy Field-emission scanning electron microscopy employed microstructural analysis. Subsequently, impact micro nano materials was assessed using embodied emissions eco-strength efficiency. results revealed that hybrid mixes 12.50% MK 2% NS (M7) showed superior performance, demonstrating significant enhancements eco-efficiency, achieving 0.15 MPa/kg CO 2 /m 3 at 28th day. Meanwhile, MK-only mix (M6) yielded lowest 330 kg . effectively reduce porosity enhance against factors while lowering clinker content, contributing sustainability. Furthermore, behaviour early hydration, dense microstructure additional Calcium Silicate Hydrate formation, leading improved properties. outcomes reveal concrete configuration has altered levels by inclusion NS, their substantial contribution producing environmentally friendly, effective, beneficial concrete.

Язык: Английский

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AI-Powered Optimization of Engineered Cementitious Composites Properties and CO₂ Emissions for Sustainable Construction

Case Studies in Construction Materials, Год журнала: 2025, Номер unknown, С. e04405 - e04405

Опубликована: Фев. 1, 2025

Язык: Английский

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Treatment of Energy from Waste Plant fly-ash for blast furnace slag substitution as a Supplementary Cementitious Material

Journal of Cleaner Production, Год журнала: 2025, Номер unknown, С. 144693 - 144693

Опубликована: Янв. 1, 2025

Язык: Английский

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Mechanical properties and durability of concrete containing fly ash and GGBS for marine environment: A comprehensive study from laboratory perspective

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

The degradation of concrete structures in the marine environment is generally caused by sulfate attack and chloride ion penetration. To improve durability environment, fly ash (FA) ground granulated blast furnace slag (GGBS) were partially used to replace cement a ternary system. crushed sand was reduce shortage river sand. In this study, containing sand, FA, GGBS prepared laboratory, which replaced with substituted FA GGBS. amounts FA/binder GGBS/binder fixed at 20% 35%, respectively, while content sand/fine aggregate set 60%. mechanical properties investigated via compression splitting tensile tests. examined using rapid penetration test, accelerated corrosion abrasion-wear resistance test. results showed that partial replacement improved both concrete. inclusion significantly its permeability, specifically, total charge passed mixture decreased from 86.2% 136.9% comparison without addition could change length (i.e., resistance) when it contact solution. changes 3.5 times 3.2 smaller than those has two-time higher ingress conventional inclusion. abrasion GGBS, mixtures 52 59% These demonstrate can concrete, be applied environments for sustainable development.

Язык: Английский

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Experimental Assessment of the Strength and Microstructural Properties of Fly Ash-Containing Basalt Fiber-Reinforced Self-Compacting Sustainable Concrete

Journal of Composites Science, Год журнала: 2025, Номер 9(2), С. 79 - 79

Опубликована: Фев. 9, 2025

This study investigates the influence of basalt fiber on rheological, mechanical, and microstructural properties sustainable self-compacting concrete (SCC) incorporating fly ash microsilica as supplementary cementitious materials (SCMs). Various SCC mixes were prepared, five different volume fractions (0.05%, 0.1%, 0.5%, 1%, 1.5%), along with a control mix. The rheological fresh evaluated using slump flow V-funnel tests. Subsequently, mechanical properties, including compressive strength, splitting tensile flexural measured after 28 days curing. Additionally, analysis was conducted scanning electron microscopy (SEM) fractured specimen surfaces. results indicated that inclusion adversely affected flowability mixes, increased volume. However, hardened exhibited significant improvements in addition fibers. optimal performance observed SCC70-85/0.10 mix specimens, which demonstrated 69.90% improvement strength 23.47% increase compared specimen. SEM further revealed enhanced density matrix containing fiber. A two-factor variance (ANOVA) repetitions to evaluate effects varying concentrations compressive, flexural, strengths mixes. ANOVA for both grade concentration, demonstrating each factor independently tensile, SCC. These findings suggest incorporation fibers holds promise extending building lifespans enhancing quality, representing valuable advancement structural engineering applications.

Язык: Английский

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A new method to improve the carbon mineralization efficiency of steel slag in aqueous condition: the effect of mechanical exfoliation

Journal of Building Engineering, Год журнала: 2025, Номер unknown, С. 112473 - 112473

Опубликована: Апрель 1, 2025

Язык: Английский

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Kinetics studies of CO2 hydrate formation in the presence of l-methionine coupled with multi-walled carbon nanotubes

Energy, Год журнала: 2024, Номер 298, С. 131366 - 131366

Опубликована: Апрель 18, 2024

Язык: Английский

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Comprehensive Review of Fly Ash: Environmental Impact and Applications

Environmental Quality Management, Год журнала: 2024, Номер 34(2)

Опубликована: Окт. 23, 2024

ABSTRACT Fly ash (FyA), a byproduct from coal combustion in power plants, has become increasingly valuable due to its pozzolanic properties. Primarily, FyA finds applications the construction industry, including road and brick construction, forest building, cement industry. When added concrete, it enhances splitting tensile strength, compressive workability, while also reducing environmental impact of production. Beyond is utilized for air pollutant removal serves as an adsorbent various contaminants. It plays role creating geopolymers nanocomposites, promoting development eco‐friendly materials. This review article presents current data on thermal plants (ThPPs) India, challenges management, impact. discusses relevant Indian policies highlights ongoing research aimed at improving efficiency expanding industrial sectors, such battery manufacturing, zeolite synthesis, cenosphere extraction. These efforts underscore FyA's potential supporting sustainable practices. The findings this address critical issues related FyA. By footprint removing pollutants, acting contaminants, demonstrates significant pollution mitigation. contributes materials promotes sustainability sector. Effective management practices are essential minimize negative human health environment. emphasizes need greater awareness implementation these comprehensively. providing detailed understanding benefits associated with FyA, aims pave way more effective utilization byproduct.

Язык: Английский

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Performance optimization and environmental assessment of novel alkali-activated binders containing carbonated recycled concrete powder

Journal of Cleaner Production, Год журнала: 2024, Номер 481, С. 144145 - 144145

Опубликована: Ноя. 1, 2024

Язык: Английский

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Strength and micro-mechanism analysis of concrete under corrosion-freeze-thaw-large temperature difference real exposure field

Construction and Building Materials, Год журнала: 2024, Номер 458, С. 139520 - 139520

Опубликована: Дек. 14, 2024

Язык: Английский

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