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Effect of Silane on Physical and Mechanical Properties of Wood Bio-Concrete Exposed to Wetting/Drying Cycles

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Bio-Based Building Materials (ICBBM 2023)

Part of the book series: RILEM Bookseries ((RILEM,volume 45))

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Abstract

Wood bio-concrete is a promising bio-based building material due to its insulating properties and its contribution to increase energy efficiency and reduce environmental impacts. However, there is still a lack of knowledge concerning its durability over time. For that reason, this study investigates the influence of accelerated aging in laboratory on the properties of wood bio-concretes through a succession of wetting/drying cycles. In order to improve the durability, silane-based water repellent was used as a surface skin protection (SSP) of the bio-concretes and as an impregnation agent of bio-aggregates (IBA). The bio-concretes were produced with a volumetric fraction of 45% of wood shavings and a cementitious matrix composed by cement, rice husk ash and fly ash. The physical and mechanical properties of the samples before and after the wetting/drying cycles were evaluated. After accelerated aging, a decrease of compressive strength was observed for the control (without silane addition) and IBA samples. It was found that SSP was more effective in improving the capillarity water absorption resistance of wood bio-concrete in the early hours only, while for IBA samples, there was a decrease of 17% comparing to control samples at the end of testing. Analysis performed by scanning electron microscopy showed cracked transition zones of the bio-aggregate and cementitious matrix of bio-concrete, due to aging process.

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Acknowledgments

This research was based upon a R&D Project from ANEEL - National Agency, “Uso de Bioconcretos e Bio-MMFs de Baixo Impacto Ambiental Visando o Aumento da Eficiência Energética de Prédios Públicos” – PD.0394-1719/2017, supported by Eletrobras Furnas with NUMATS/POLI/COPPE/UFRJ cooperation.

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Authors and Affiliations

  1. Federal University of Rio de Janeiro, Rio de Janeiro, RJ, 21945-970, Brazil

    Amanda Lorena Dantas de Aguiar, M’hamed Yassin Rajiv da Gloria & Romildo Dias Toledo Filho

  2. Eletrobras Furnas, Rio de Janeiro, Brazil

    Nicole Pagan Hasparyk

Authors
  1. Amanda Lorena Dantas de Aguiar
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  2. M’hamed Yassin Rajiv da Gloria
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  3. Nicole Pagan Hasparyk
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  4. Romildo Dias Toledo Filho
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Corresponding author

Correspondence to Amanda Lorena Dantas de Aguiar .

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Editors and Affiliations

  1. Institut Pascal CNRS, INP Clermont Auvergne, Université Clermont Auvergne, Aubière, France

    Sofiane Amziane

  2. Faculty of Civil and Environmental Engineering, TU Wien, Institute of Material Technology, Building Physics, and Building Ecology, Vienna, Austria

    Ildiko Merta

  3. Laboratoire de Génie Civil et géo-Environnement (LGCgE), Univ. Artois, IMT Nord Europe, Junia, Univ. Lille, Béthune, France

    Jonathan Page

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de Aguiar, A.L.D., da Gloria, M.Y.R., Hasparyk, N.P., Filho, R.D.T. (2023). Effect of Silane on Physical and Mechanical Properties of Wood Bio-Concrete Exposed to Wetting/Drying Cycles. In: Amziane, S., Merta, I., Page, J. (eds) Bio-Based Building Materials. ICBBM 2023. RILEM Bookseries, vol 45. Springer, Cham. https://doi.org/10.1007/978-3-031-33465-8_13

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  • DOI: https://doi.org/10.1007/978-3-031-33465-8_13

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-33464-1

  • Online ISBN: 978-3-031-33465-8

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