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SUSTAINABLE WASTE-TO-WEALTH INNOVATION EXPLORING THE POTENTIAL OF BINDERLESS PAPER-BASED COMPOSITE BOARDS AS CEILINGS FOR BUILDING CONSTRUCTION
INNOVACIÓN SOSTENIBLE DE RESIDUOS A RIQUEZA: EXPLORACIÓN DEL POTENCIAL DE TABLEROS COMPUESTOS DE PAPEL SIN ADHESIVO COMO CIELOS RASOS PARA LA CONSTRUCCIÓN DE EDIFICIOS
DOI:
https://doi.org/10.15446/mo.n71.119616Keywords:
bulk density, flexural strength, thermal comfort, thermal insulation, waste recycling (en)densidad aparente, resistencia a la flexión, confort térmico, aislamiento térmico, reciclaje de residuos (es)
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In this research, binderless paper-based composite boards were fabricated from waste papers and then assessed experimentally for their suitability as ceiling materials in building construction. During the process, waste newspaper paste (WNP) and waste writing paper paste (WWP) were prepared and used at varying percentages (0, 30, 50, 70, and 100%) on weight basis to develop the ceiling samples. Three samples were prepared for each mix design, dried to constant weight, and characterized in terms of physical properties, thermal responses, and strength behaviors. The results showed maximum bulk density (587.0 kgm-3), thermal conductivity (0.0835 Wm-1K-1), thermal diffusivity (10.56 x10-8 m2s-1), flexural strength (1.318 N/mm2), and internal bond strength (0.214 N/mm2) at 100.0% loading of the WWP. Though nailability remained 100.0% notwithstanding the composite mixes, the samples recorded the highest thickness swelling (26.89%), void fraction (49.92%), and specific heat capacity (1429 Jkg-1K-1) as the proportion of the WNP increased to 100.0%. Further, it was found that these WNP-WWP samples could outperform conventional ceilings such as plaster of Paris, asbestos, and KalsiCeil. The undertaking described herein can ensure reduction in production time since no adhesive is required, thus benefiting both the environment and economy while availing the building sector with cost-effective and sustainable ceilings for building construction. The knowledge from this research could help in solving the disposal problems associated with waste papers and also tackling hampering of sustainable housing development due to high cost of building construction materials.
En esta investigación, se fabricaron tableros compuestos de papel sin adhesivo a partir de papel de desecho, y luego se evaluó experimentalmente su idoneidad como materiales para cielos rasos en la construcción de edificios. Durante el proceso, se prepararon pasta de periódico reciclado (WNP, por sus siglas en inglés) y pasta de papel de escritura reciclado (WWP), las cuales se utilizaron en diferentes proporciones (0, 30, 50, 70 y 100 %) con base en el peso para desarrollar las muestras de cielo raso. Se prepararon tres muestras para cada diseño de mezcla, manteniendo un peso constante, y se caracterizaron en términos de propiedades físicas, respuestas térmicas y resistencia mecánica. Los resultados mostraron una densidad máxima aparente de 587,0 kg m⁻³, conductividad térmica de 0,0835 Wm⁻¹ K⁻¹, difusividad térmica de 10,56 x 10-8 m²s⁻¹, resistencia a la flexión de 1,318 N/mm² y resistencia interna a la tracción de 0,214 N/mm² a una proporción del 100 % de WWP. Aunque la resistencia a la tracción interna se mantuvo en 100,0 % a pesar de las mezclas compuestas, las muestras registraron el mayor hinchamiento por absorción (26,89 %), fracción de vacíos (49,92 %) y capacidad calorífica específica (1429 Jkg⁻¹K⁻¹) a medida que la proporción de WNP aumentó hasta el 100,0 %. Además, se encontró que las muestras WNP-WWP podrían superar a los cielos rasos convencionales como los de yeso de París, asbesto y KalsiCeil. El proyecto descrito aquí garantiza una reducción en los costos de producción, ya que no se requiere adhesivo, beneficiando así tanto al medio ambiente como a la economía, y proporcionando al sector de la construcción una solución rentable y sostenible para los cielos rasos. El conocimiento generado en esta investigación podría ayudar a resolver los problemas de disposición de papel de desecho y, además, a contrarrestar los obstáculos para el desarrollo de viviendas sostenibles debido al alto costo de los materiales de construcción tradicionales.
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