Experimental investigation of face mask fiber-reinforced fully recycled coarse aggregate concrete

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 447, P. 138141 - 138141

Published: Aug. 31, 2024

Language: Английский

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Utilization of Industrial, Agricultural, and Construction Waste in Cementitious Composites: A Comprehensive Review of their Impact on Concrete Properties and Sustainable Construction Practices.

Materials Today Sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 101080 - 101080

Published: Jan. 1, 2025

Language: Английский

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Pozzolanic reaction, basic properties, carbon reduction and visualisation of kerbstone prepared from recycled concrete

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: 22, P. e04303 - e04303

Published: Feb. 1, 2025

Language: Английский

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Permeable Concrete with Recycled Aggregates. Study of Its Mechanical and Microstructural Properties

Materials, Journal Year: 2025, Volume and Issue: 18(4), P. 770 - 770

Published: Feb. 10, 2025

The construction industry is a fundamental sector for the development of countries; however, it produces negative environmental impacts due to demand natural resources and generation demolition waste (CDW). Therefore, pursuit solutions recycle reintegrate these wastes, which often accumulate in poorly regulated areas, becomes not only an priority but also opportunity transform problem into advantage. Utilizing residues contributes reducing pressure on resources, minimizes footprint sector, promotes more sustainable responsible model that can serve as example future generations. properties recycled concrete aggregates (RCA) asphalt pavement (RAP) were determined order subsequently obtain different permeable (RPC) elaborated from factorial design 23 with aggregates. studied workability, permeability, volumetric weight, compression uniaxial, bending. Finally, they correlated their matrix microstructure by means TGA SEM tests, allowed determining compounds contained various mixtures impact physical-mechanical behavior. results indicate RCA RAP are feasible alternatives making porous pavements pedestrian or light traffic areas when 3/4" size included matrix, resulting optimum dosage M5 mix this research, whose mechanical are: uniaxial compressive strength: 15.39 MPa; flexural 3.12 permeability: 0.375 cm/s.

Language: Английский

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Development of high-water-resistance and high-strength alkali- activated foam by using waste brick powder

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 467, P. 140397 - 140397

Published: Feb. 13, 2025

Language: Английский

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Physical characteristics improvement of recycled concrete powder by mechanoactivation with and without grinding aid

Ambiente Construído, Journal Year: 2025, Volume and Issue: 25

Published: Jan. 1, 2025

Abstract This study aimed to evaluate the effect of mechanoactivation with and without grinding aids (GAs) on physical characteristics recycled concrete powder (RCP) for use as supplementary cementitious material (MCS). RCP was subjected comminution process in a planetary ball mill 30, 60, 120, 180, 240 minutes, using three types (propylene glycol (PG), sodium hexametaphosphate (SHMP) triethanolamine (TEA)), at different levels (0, 0.05, 0.1, 0.5 1%). The powders’ performance SCM (10% substitution) evaluated pastes consistency compressive strength 7 days. Considering shortest milling time lowest content aid, 30 minutes 0.5% propylene (PG) additive reduced d50 from 20.99 8.85 µm increased BET 6.23 7.50 m²/g, altering crystallinity. results indicated that favored MSC, statistically significant score particularity resistance.

Language: Английский

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Study on the Performance Enhancement of Recycled Fine Aggregate Through Carbonation with Calcium Source Supplied by Industrial Waste Residue

Materials, Journal Year: 2025, Volume and Issue: 18(7), P. 1589 - 1589

Published: April 1, 2025

With the rapid advancement of urbanization, reuse waste concrete has become more and important. Recycled aggregate inevitably develops microcracks during crushing process concrete, resulting in undesirable characteristics such as low density strong water absorption. This study employed an external calcium source combined with wet carbonation to optimize performance recycled fine (RFA). A series microscopic analytical techniques, including scanning electron microscopy coupled energy-dispersive spectroscopy (SEM-EDS), X-ray diffraction (XRD), Fourier transform infrared (FTIR), thermogravimetric analysis (TG), Brunauer–Emmett–Teller (BET) method, were used elucidate underlying mechanisms. The results indicate that calcium-rich leachate can be obtained by soaking alkali residue 0.3 mol/L acetic acid at a solid-to-liquid ratio 1:6. When this was further soak 1:2, followed chamber, effect reached its optimum. Under these conditions, saturated absorption decreased 16%, carbon sequestration efficiency increased 66.8%, pores smaller than 50 nm accounted for 62.9% total pore volume. Furthermore, Bacillus strain capable producing carbonic anhydrase introduced enhance reaction. demonstrated when added acid-modified aggregate, 14.6%, while significantly 109.04%. Additionally, constitute 79.2% These findings suggest utilizing calcium-containing industrial modification, is highly effective. approach not only improves aggregates but also promotes reutilization waste, contributing sustainable construction practices.

Language: Английский

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Study on the influence of composite modified coal gangue coarse aggregate on the mechanical properties of concrete and mesoscopic simulation

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112549 - 112549

Published: April 1, 2025

Language: Английский

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Evaluating the feasibility of using iron powder as a partial replacement for fine aggregates in concrete: An AI-based modeling approach

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 474, P. 140890 - 140890

Published: April 9, 2025

Language: Английский

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Recycled and waste materials in construction in Bolivia: a systematic literature review

Journal of Building Pathology and Rehabilitation, Journal Year: 2025, Volume and Issue: 10(2)

Published: April 21, 2025

Language: Английский

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