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Geopolymer concrete (GPC) is an eco-friendly alternative for conventional concrete. It exploits industrial by-products in production to reduce the environmental impact and improve sustainability. This study focuses on envisaging the 28-day compressive strength of cenosphere-based geopolymer concrete incorporating copper slag using Artificial Neural Networks (ANN). The assimilation of ANN models in predicting the compressive strength of cenosphere-based geopolymer concrete with copper slag offers a promising approach to sustainable construction. By precisely forecasting the compressive strength of concrete based on the ingredient proportions, these models can rationalise the design process. The test results signposted that the developed model gives higher accuracy (> 98.6%), capability and flexibility in predicting the compressive strength of geo-polymer concrete incorporated with cenosphere and copper slag.
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http://dx.doi.org/10.1038/s41598-025-13176-z | DOI Listing |
Sci Rep
September 2025
Civil Engineering Department, Takhar University, Taloqan, Afghanistan.
Rapid sand filtration is typically used at water treatment plants to remove the fine suspended solid particles from the raw water. Backwashing of exhausted filter beds inevitably generates large volume of filtration sludge in water treatment plants. In this study, filtration sludge is collected, dried and crushed to powder, then passed through 90 µm sieve to get powdered filtration sludge (PFS) which is then characterized and utilized without energy intensive process of calcination.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
Rapid Manufacturing Engineering Center, School of Mechatronical Engineering and Automation, Shanghai University, Shanghai, 200444, China; National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, 200444, China; Shanghai Key Laboratory of Intelligen
Osteochondral defects caused by trauma, obesity, tumors, and degenerative osteoarthropathies severely impair patients' quality of life. Multilayer tissue engineering scaffolds offer promising strategies for osteochondral repair by enhancing structural biomimicry. In this study, a triple-layer GelMA-alginate-based osteochondral scaffold (TCOS) was fabricated using an enhanced multi-axis, multi-process, multi-material 3D bioprinting system (MAPM-BPS).
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, PR China. Electronic address:
Ionic conductive hydrogels show promise for flexible sensors in wearables and e-skins, but balancing mechanical strength with high conductivity remains challenging. Herein, a triple-network ionic conductive hydrogel based on poly(acrylic acid) (PAA) was developed, synergistically reinforced by dissolved cellulose (dCel) and aramid nanofibers (ANF), with Al/Zn bimetallic ions serving as the conductive medium. Intriguingly, dCel was in-situ generated using the concentrated Al/Zn bimetallic salt solutions as the cellulose solvent, following the complete dissolution of the pulp fibers driven by the intensive ionic hydration of Al/Zn ions.
View Article and Find Full Text PDFPLoS One
September 2025
Guangxi Transportation Investment Group Co., Ltd., Nanning, Guangxi, China.
To investigate the axial compressive behavior of CFRP-PVC square tube-embedded aluminum concrete columns, five specimens and one control specimen without I-shaped aluminum were tested under uniaxial compression, with the number of CFRP layers and spacing as variable parameters. The failure modes, load-displacement responses, and mechanical properties such as peak load, ductility, stiffness, and energy dissipation were systematically analyzed. Results showed that the incorporation of I-shaped aluminum improved the peak load and ductility by an average of 48.
View Article and Find Full Text PDFSmall
September 2025
College of Science, Nanjing Forestry University, Nanjing, 210037, China.
Inspired by the rigid exoskeleton and elastic inner tissues of crustaceans, a bilayer gel integrating high-strength rigidity and soft cushioning with high interfacial adhesion (1060 ± 40 J m ) is developed via a stepwise solid-liquid phase crosslinking strategy. Herein, a prefrozen high-concentration polyvinyl alcohol (PVA) solution forms a solid-state structural framework, while a subsequently cast low-concentration PVA solution generates a flexible layer. Partial thawing of the frozen gel during casting triggers molecular chain interpenetration at the interface, synergistically enhanced by controlled molecular penetration, freeze-thaw cycles, and salt-induced crystallization.
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