Recycling three local waste materials for optimizing the mechanical performance of fly ash-based geopolymer cement: Application of a ternary mixture design and artificial neural networks modeling

Sustainable Chemistry and Pharmacy, Год журнала: 2025, Номер 46, С. 102064 - 102064

Опубликована: Июнь 5, 2025

Язык: Английский

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Influence of the Properties of Different Types of Recycled Aggregate on the Service Properties and Leaching of Paving Blocks Manufactured at Industrial Scale

Materials, Год журнала: 2024, Номер 17(12), С. 2898 - 2898

Опубликована: Июнь 13, 2024

The literature shows that a circular economy can benefit some sectors such as the construction industry. This sector demands huge amounts of raw materials and produces waste when buildings structures are demolished. paper explores possibility manufacturing at industrial scale paving blocks using different types demolition wastes aggregates, without modifying commonly used conditions. A total four recycled aggregates were in this research. Both natural have been characterized. dosages optimized (three formulations). Prefabricated tests carried out on products manufactured plants evolution mechanical properties over time has analysed. results obtained analysed statistically by applying principal component analysis (PCA) method. To ensure security elements manufactured, ionic leaching aggregate produced tested. main implications research industry show majority could replace 25% precast concrete, should be taken into account standards all study considered environmentally safe (no risk leaching) according to Netherland Soil Quality Decree. Therefore, it is evident possible manufacture an with mixed concrete ceramic nature, both fine coarse fractions meet requirements its reference standard UNE-EN 1338 Decree evaluates environmental risks due leaching.

Язык: Английский

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Sustainable Utilization Method of Zn-Bearing Iron Dust in Magnesium Potassium Phosphate Cement: Mechanical Properties and Stabilization Behavior of Zn

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(42), С. 15538 - 15550

Опубликована: Окт. 8, 2024

As a typical hazardous waste generated in the metallurgical industry, Zn-bearing iron dust (ZD) is difficult to recycle due Zn enrichment on furnace wall and potential environmental risks. In this paper, we combined ZD with magnesium potassium phosphate cement (MKPC) achieve harmless treatment of efficient stabilization heavy metal. The results showed that efficiency all samples reached over 96%. With 60% high content ZD, setting time MKPC was increased by 1.7 times, compressive strength could reach 65% control. Durability experiments ZD-MKPC had good adaptability safety. Further characterizations ZnFe2O4 may compete MgO for form Zn3(PO4)2 FePO4. Finally, precipitates transformed into stable Zn2(OH)PO4 Fe3(OH)3(PO4)2 an alkaline environment. Overall, study provides new perspective recycling reference metal mechanism ZD-MKPC.

Язык: Английский

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Green synthesis of Cubic Spinel ferrites and their Potential biomedical applications

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

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Recycling B4C grinding waste to fabricate high-performance ceramics by modification treatments and hot pressing

Journal of Environmental Management, Год журнала: 2024, Номер 371, С. 123230 - 123230

Опубликована: Ноя. 4, 2024

Язык: Английский

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