Cellulose nanofibrils extracted from fique fibers as bio-based cement additive

Catalina Gómez Hoyos, Robin Zuluaga, Piedad Gañán, Teresa M. Pique, Analia Vazquez

    Research output: Contribution to journalArticlepeer-review

    26 Scopus citations

    Abstract

    Bio-based additives are currently of special interest in the construction industry. The use of biopolymers increases every year owing to the industry's goal to provide non-toxic and emission-free construction products. Therefore, the addition of bio-based nanofibers to cement paste was studied. The bio-based nanofibers were isolated from fique fibers as cellulose nanofibrils (CNF) through mechanical and chemical treatments. The CNF acted as viscosity-modifying agent for the cement paste, thereby increasing its yield point exponentially with small additions. Moreover, the CNF increased the hydration degree and storage modulus of the cement paste, which were measured through a dynamic thermo-mechanical analysis (DMA) at high temperatures. Furthermore, the CNF-modified cement paste presented less microcracking under stress and at high temperatures. Thus, a synergetic interaction occurred between the cement paste and the bio-based nanofibers isolated from fique fibers.

    Original languageEnglish
    Pages (from-to)1540-1548
    Number of pages9
    JournalJournal of Cleaner Production
    Volume235
    DOIs
    StatePublished - 20 Oct 2019

    Bibliographical note

    Funding Information:
    This work was supported by the Argentinian National Council of Scientific and Technical Research (Consejo Nacional de Investigaciones Científicas y Técnicas–CONICET), the Argentinian National Agency of Scientific and Technological Promotion (Agencia Nacional de Promoción Científica y Tecnológica), and the Universidad de Buenos Aires, Argentina .

    Publisher Copyright:
    © 2019 Elsevier Ltd

    Keywords

    • Cellulose
    • Cement
    • Dynamic thermo-mechanical analysis
    • Fique fibers
    • Nanofibrils
    • Rheology

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