Development of Oat Husk-Derived Nano-Silica for High-Performance and Sustainable Mortar Applications

Development of Oat Husk-Derived Nano-Silica for High-Performance and Sustainable Mortar Applications

This study investigates the incorporation of nano-silica synthesized from agro-industrial waste—specifically oat husks—into plastering mortars. Amorphous silica is extracted through chemical treatment and converted into nano-silica via a sol-gel process, yielding 2.79%. Characterization through EDS,...

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Váldodahkki: Alvansazyazdi, Mohammadfarid (author)
Eará dahkkit: Carlosama Carde, Alvaro Yerandi (author), Rosillo Pilamunga, Jorge David (author), Bonilla Valladares, Pablo Mauricio (author), Patrice Martial, Debut Alexis (author), Santamaria Carrera, Jorge Luis (author), Cadena Perugachi, Hugo Alexander (author), Logacho Morales, Andrea Estefania (author), Tapia Vargas, Jhon Fabricio (author)
Materiálatiipa: article
Giella:spa
Almmustuhtton: 2025
Fáttát:
Nano-sílice
cáscara de avena
sol-gel
mortero
propiedades mecánicas
enlucido
Nano-silica
oat husk
mortar
mechanical properties
plastering
Liŋkkat:https://revistadigital.uce.edu.ec/index.php/INGENIO/article/view/8165
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Govvádus
Čoahkkáigeassu:This study investigates the incorporation of nano-silica synthesized from agro-industrial waste—specifically oat husks—into plastering mortars. Amorphous silica is extracted through chemical treatment and converted into nano-silica via a sol-gel process, yielding 2.79%. Characterization through EDS, SEM, TEM, and XRD confirms nanoscale silica formation. Mortars are formulated using Atena Máster type N cement and fine aggregates from the “Copeta” quarry, verified under NTE INEN 2 536 standards. Nano-silica is added at dosages of 0.25%, 0.50%, 0.75%, and 1.00% by cement weight. The mixtures are evaluated in both fresh and hardened states. Fresh-state tests assess workability and flow, while compressive strength is measured at 7, 14, and 28 days. Results show that 0.25% nano-silica provides optimal performance, achieving 12.6 MPa at 28 days. Higher dosages lead to strength reduction, indicating a performance threshold. A cost-benefit analysis highlights the economic and environmental viability of converting agro-waste into high-performance materials. The findings underline nano-silica’s potential to enhance mechanical properties while promoting sustainability. This research demonstrates that controlled use of nano-silica from waste sources offers an eco-friendly, efficient solution for improving plaster mortar in the construction industry.

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