Effect of degree of refining on flexural response of fibre cement boards reinforced with Guadua Angustifolia KUNTH bamboo

Luz Adriana Sánchez Echeverri, Jorge Alberto Medina Perilla, Germán Quintana, Jorge Hernán Sánchez Toro, Esmaiel Ganjian

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    Abstract

    In this research, alkaline pre-treated Guadua Angustifolia fibres were refined in a PFI mill refiner at different speeds (1500, 4500, 7000 and 10000 rev) and used as reinforcement in cement composite boards CCB. To determine physical changes after refining, Water Retention Value (WRV), Fibre length and SEM images were evaluated. Additionally, crystalline indices were calculated by Segal method from XRD spectra. With the aim to evaluate the effect of degree of refining in the mechanical response of CCB its flexural strength was evaluated after 7 and 28 days of curing. Results show an increasing of WRV up to 4500 rev of refining, followed by a decrease once this point of refining is overcome. Likewise, flexural strength of composites shows a similar behaviour as WRV, exhibiting an optimal value between 4500 and 7000 rev of refining
    Original languageEnglish
    Title of host publicationFifth International Conference on Sustainable Construction Materials and Technologies (SCMT5)
    EditorsEshmaiel Ganjian, Peter Claisse, Mukesh Limbachiya, Mohammadreza Bagheri
    PublisherInternational Committee of the SCMT conferences
    Pages193-204
    Number of pages11
    Volume2
    ISBN (Print)978-1079110265
    Publication statusPublished - 15 Jul 2019
    EventFifth International Conference on Sustainable Construction Materials and Technologies - Kingston upon Thames, United Kingdom
    Duration: 14 Jul 201917 Jul 2019
    Conference number: 5
    https://www.kingston.ac.uk/events/item/2839/14-jul-2019-fifth-international-conference-on-sustainable-construction-materials-and-technologies-scmt5/

    Publication series

    NameSustainable Construction Materials and Technologies
    ISSN (Print)2515-3048

    Conference

    ConferenceFifth International Conference on Sustainable Construction Materials and Technologies
    Abbreviated titleSCMT5
    CountryUnited Kingdom
    CityKingston upon Thames
    Period14/07/1917/07/19
    Internet address

    Keywords

    • Cement board composites
    • Flexural response
    • Refining

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Mechanics of Materials
    • Materials Science(all)

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