Which solution is more sustainable: Waste foundry sand stabilized with alkali-activated binder or Portland cement?

Journal of Building Engineering, Год журнала: 2024, Номер 84, С. 108448 - 108448

Опубликована: Янв. 2, 2024

Язык: Английский

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Contaminant leaching from pervious concrete pavements: considerations and impact on the environment

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 221 - 249

Опубликована: Янв. 1, 2025

Язык: Английский

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Potential Reuse of Andean Highlands Tin Tailings in Geotechnical Works Through Geopolymer Binder Stabilization

Geotechnical and Geological Engineering, Год журнала: 2024, Номер 42(7), С. 6071 - 6093

Опубликована: Июль 30, 2024

Язык: Английский

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Stabilization of waste foundry sand with alkali-activated binder: Mechanical behavior, microstructure and leaching

Construction and Building Materials, Год журнала: 2024, Номер 444, С. 137772 - 137772

Опубликована: Авг. 15, 2024

Язык: Английский

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Geotech social impacts: Development, application, and comparative analysis

Environmental Impact Assessment Review, Год журнала: 2024, Номер 108, С. 107577 - 107577

Опубликована: Июнь 10, 2024

Язык: Английский

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Long-term performance: strength and metal encapsulation in alkali-activated iron ore tailings

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(34), С. 47071 - 47083

Опубликована: Июль 10, 2024

Язык: Английский

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Environmental, economic, and social impacts of sugar cane bagasse and eggshell wastes for soil stabilization

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(10), С. 15973 - 15985

Опубликована: Фев. 3, 2024

Язык: Английский

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Influence of incorporating fine green foundry sand waste in the production of geopolymers: study of physical and mechanical properties

Contribuciones a las Ciencias Sociales, Год журнала: 2024, Номер 17(1), С. 1094 - 1115

Опубликована: Янв. 8, 2024

The aim of this article was to evaluate the physical and mechanical properties a geopolymeric material developed by replacing metakaolin, conventional precursor, with fine green foundry sand waste (FGFSW). Substitution ratios 0% (reference specimen), 5%, 10%, 15% 20% were used, as well molar SiO2/Al2O3 equal 3.0 3.5. specimens cured at 7, 14 28 days then tested for compressive strength, water absorption, void ratio, dry density saturated density. In addition, subjected macrographic tests assess geopolymer material. results showed reduction in strength substitution increased. There also decrease increased, an increase porosity absorption matrix. These effects attributed presence FGFSW grains which did not take part geopolymerization reaction, having low contributing strength. Finally, incorporating into production geopolymers appears be possible alternative disposing waste.

Язык: Английский

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Environmental assessment of alkali-activated materials based on agro-industrial waste as alkaline activators through leaching tests

Journal of Environmental Management, Год журнала: 2024, Номер 368, С. 122265 - 122265

Опубликована: Авг. 27, 2024

Global circular economy drives the development of sustainable alkali activated materials (AAM) for use as construction material from industrial by-products and wastes. The assessment potentially hazardous substances release these new combinations into soil groundwater over time is essential. In this study, aim environmental three AAMs based on blast furnace slag (BFS), with almond shell biomass ash (ABA) potassium source solid sources silica agricultural industry, rice husk (RHA), spent diatomaceous earth (SDE) bamboo leaf (BLA), using European horizontal leaching tests proposed materials, monolithic form, Dynamic Surface Leaching Test (DSLT) granular Up-flow Percolation Compliance test, by simulating different scenarios their entire life cycle. results AAM showed effectiveness inertization all recycled studied, which exceeded some inert limits, means activation process. Despite absence significant differences in mechanisms oxyanions As, Cr, Mo, Sb, Se V between developed, they presented long-term behavior depending monolithic, or granular, therefore cycle stages. Therefore, it concluded that although incorporation agro-industrial waste alternative activators BFS according to Dutch Soil Quality Decree (for unrestricted materials) an environmentally acceptable option, design derived should be assessed a combination cover expected

Язык: Английский

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Paint booth waste as an alternative aggregate for the production of interlocking concrete blocks

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Фев. 7, 2024

Inadequate disposal of hazardous waste results risks to the environment and human health. Although use in new processes and/or products has received limited attention literature, there is still significant potential be investigated. Reducing usage natural resources management are important for sustainable practices during concrete production. This study investigated mechanical leaching behavior paint booth (PBW) as a partial substitute (10, 20, 30 40%) coarse aggregate mixtures manufacture interlocking blocks. A sample PBW used this research differs from those literature due its granulometry characterized by aggregates different sizes. Concrete consistency, compressive strength, water absorption, X-ray diffraction, scanning electron microscopy, tests were carried out. The did not influence consistency fresh state concrete. blocks with smaller substitutions (10 20%) presented denser structures greater strengths, surpassing 35 MPa after 28 days. Higher levels resulted more porous absorption. concrete-PBW showed no metal toxicity, i.e., incorporation construction material avoided leaching. up 20% demonstrated satisfactory environmental performance.

Язык: Английский

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