Effect of moisture content on the mechanical characteristics of rammed earth

Q. B. Bui, Jean-Claude Morel, S. Hans, P. Walker

    Research output: Contribution to journalArticle

    99 Citations (Scopus)
    14 Downloads (Pure)

    Abstract

    In this paper, influence of moisture content on the mechanical characteristics of rammed-earth has been studied. Samples from different soils (sandy, clayey, stabilised) were manufactured and tested in unconfined compression at several moisture contents. Compressive strength, elastic modulus and Poisson's ratio were determined. A simplified method to measure the suction within rammed earth samples has been developed and validated. The variation of mechanical characteristics related to moisture content and suction are presented. This paper shows that a slight increase in the moisture content of dry rammed-earth is not followed by sudden drop in wall strength. Qualitative explanations at the nano-scale are presented.
    Original languageEnglish
    Pages (from-to)163-169
    JournalConstruction and Building Materials
    Volume54
    Early online date17 Jan 2014
    DOIs
    Publication statusPublished - Mar 2014

    Keywords

    • Rammed earth
    • Cohesion
    • Suction
    • Compressive strength
    • Young modulus
    • Poisson’s ratio

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