The use of machine learning techniques to investigate the properties of metakaolin-based geopolymer concrete

Journal of Cleaner Production, Год журнала: 2024, Номер 446, С. 141305 - 141305

Опубликована: Фев. 20, 2024

The construction industry significantly contributes to global greenhouse gas emissions, highlighting the imperative for developing environmentally friendly materials. Geopolymers, particularly those utilizing metakaolin (MK), have emerged as a promising green alternative conventional concrete. However, acquisition of MK-based geopolymer concrete with optimal mechanical properties poses challenges due numerous influential factors, disagreement over various findings, and lack reliable predictive model. This study aimed address this gap by employing wide range machine learning methods, namely gradient boosting machine, random forest, decision tree, artificial neural network, support vector machine. Different optimization regularization techniques were used comprehensively understand factors affecting compressive strength concrete, including mixture design, chemical characteristics initial binder activators, different curing regimes. results demonstrated exceptional performance in predicting achieving coefficient determination 0.983 mean absolute error 1.615 MPa. Additionally, employed partial dependence plots, feature importance analysis, SHapley Additive exPlanations (SHAP) elucidate proposed models. coarse-to-fine aggregate ratio, H2O/Na2O molar extra water content, sodium hydroxide concentration identified most critical parameters research advancing development sustainable materials, streamlining experimental tasks, minimizing need labor improving time efficiency, providing valuable insights optimizing design

Язык: Английский

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Applications of engineered biochar in remediation of heavy metal(loid)s pollution from wastewater: Current perspectives toward sustainable development goals

The Science of The Total Environment, Год журнала: 2024, Номер 926, С. 171859 - 171859

Опубликована: Март 20, 2024

Язык: Английский

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Iron-rich industrial waste enhanced low-carbon radiation shielding functional composites

Journal of Cleaner Production, Год журнала: 2024, Номер 449, С. 141649 - 141649

Опубликована: Март 7, 2024

Язык: Английский

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Optimized reinforcement of granite residual soil using a cement and alkaline solution: A coupling effect

Journal of Rock Mechanics and Geotechnical Engineering, Год журнала: 2024, Номер unknown

Опубликована: Апрель 1, 2024

Granite residual soil (GRS) is a type of weathering that can decompose upon contact with water, potentially causing geological hazards. In this study, cement, an alkaline solution, and glass fiber were used to reinforce GRS. The effects cement content SiO2/Na2O ratio the solution on static dynamic strengths GRS discussed. Microscopically, reinforcement mechanism coupling effect examined using X-ray diffraction (XRD), micro-computed tomography (micro-CT), scanning electron microscopy (SEM). results indicated addition 2% 0.5 led densest matrix, lowest porosity, highest compressive strength, which was 4994 kPa impact resistance 75.4 kN after adding fiber. strength result hydration, pozzolanic reaction clay minerals in GRS, alkali activation minerals. Excessive or excessively high have negative effects, such as destruction C-(A)-S-H gels by hindering production N-A-S-H gels. This damage matrix reinforced leading decrease both strengths. study suggests further research required gain more precise understanding mixture terms reducing our carbon footprint optimizing its properties. findings indicate are appropriate for be high-strength foundation embankment construction. provides analysis strategies mitigating managing slope failures, well enhancing roadbed performance.

Язык: Английский

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Nanotechnology-powered innovations for agricultural and food waste valorization: A critical appraisal in the context of circular economy implementation in developing nations

Process Safety and Environmental Protection, Год журнала: 2024, Номер 184, С. 477 - 491

Опубликована: Фев. 2, 2024

Язык: Английский

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Emerging Trends in Sustainable Building Materials: Technological Innovations, Enhanced Performance, and Future Directions

Results in Engineering, Год журнала: 2024, Номер 24, С. 103521 - 103521

Опубликована: Ноя. 24, 2024

Язык: Английский

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Solidification performance and mechanism of typical radioactive nuclear waste by geopolymers and geopolymer ceramics: A review

Progress in Nuclear Energy, Год журнала: 2024, Номер 169, С. 105106 - 105106

Опубликована: Фев. 5, 2024

Язык: Английский

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A state-of-the-art review on frost resistance of fiber-reinforced geopolymer composites

Sustainable Chemistry and Pharmacy, Год журнала: 2025, Номер 45, С. 102006 - 102006

Опубликована: Март 29, 2025

Язык: Английский

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Innovations in Energy-Efficient Construction: Pioneering Sustainable Building Practices

Cleaner Engineering and Technology, Год журнала: 2025, Номер unknown, С. 100957 - 100957

Опубликована: Март 1, 2025

Язык: Английский

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A comparative cradle-to-gate life cycle assessment of geopolymer concrete produced from industrial side streams in comparison with traditional concrete

The Science of The Total Environment, Год журнала: 2022, Номер 865, С. 161230 - 161230

Опубликована: Дек. 28, 2022

Traditional concrete production is a major contributor to global warming. Industrially produced geopolymer viable substitute limit the negative impacts of production. Thus, this study developed novel mix designs using industrial side streams, such as bark boiler ash, construction and demolition waste (CDW), fibre waste, mine tailings. A cradle-to-gate life cycle assessment (LCA) methodology was conducted evaluate potential these different (GPC) in comparison with traditional concrete. The results showed that industrial-based lower amounts sodium silicate metakaolin exhibited better environmental performance. Specifically, 10 % reduction content reduces warming impact by 16 compared processing curing for formulations has an less than 1 %. From sustainability perspective, performance from streams can be further improved increasing concentration recycled mixes. In addition, effective use improve management, sustainability, strength

Язык: Английский

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