Hygroscopic Performance of Sulphate-Based MgO Construction Boards

Ayodele Olofinjana, Nicholas Jays, David Young, Jitendra Mata, Rezwanul Haque

    Research output: Chapter in Book/Report/Conference proceedingConference Paper published in Proceedingspeer-review

    Abstract

    Magnesium oxide (MgO) construction boards are currently being used to replace fibre cement boards in various construction applications. This include usage in external claddings where reports of hygroscopic degradation were linked to presence of residual chlorides originating from the manufacturing process. The industry has responded with new products that are being marketed as Magnesium Oxysulphate (MOS) boards that are still essentially MgO based but are manufactured from non-chloride precursor. In this paper the hygroscopic performance of the new MOS based MgO is compared with some other commercially Chloride containing samples. It is shown that MOS based samples exhibited lower water absorption comparable to fibre cement boards. No evidence of chloride in the new MOS based MgO boards was found by Energy Dispersive Spectroscopy (EDS). Small angle neutron scattering (SANS), of dry samples and hydrated samples using deuterated water and normal water showed that the better hygroscopic properties of MOS based MgO board was not related to structural morphological modification and are more likely due to the absence of residual chloride in the new generation MgO boards.

    Original languageEnglish
    Title of host publicationAdvances in Manufacturing Processes, Intelligent Methods and Systems in Production Engineering - Progress in Application of Intelligent Methods and Systems in Production Engineering
    EditorsAndre Batako, Anna Burduk, Kanisius Karyono, Xun Chen, Ryszard Wyczólkowski
    PublisherSpringer Science and Business Media Deutschland GmbH
    Pages390-401
    Number of pages12
    ISBN (Print)9783030905316
    DOIs
    Publication statusPublished - Apr 2022
    EventGlobal Congress on Manufacturing and Management, GCMM 2021 - Virtual, Online
    Duration: 7 Jun 20219 Jun 2021

    Publication series

    NameLecture Notes in Networks and Systems
    Volume335 LNNS
    ISSN (Print)2367-3370
    ISSN (Electronic)2367-3389

    Conference

    ConferenceGlobal Congress on Manufacturing and Management, GCMM 2021
    CityVirtual, Online
    Period7/06/219/06/21

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