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    Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs.

    Access Status
    Open access via publisher
    Authors
    Jin, X.
    Hou, C.
    Fan, X.
    Lu, Chunsheng
    Yang, H.
    Shu, X.
    Wang, Z.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Jin, X. and Hou, C. and Fan, X. and Lu, C. and Yang, H. and Shu, X. and Wang, Z. 2017. Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs.. Scientific Reports. 7 (1).
    Source Title
    Scientific Reports
    DOI
    10.1038/s41598-017-15700-2
    ISSN
    2045-2322
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/58528
    Collection
    • Curtin Research Publications
    Abstract

    As concrete and mortar materials widely used in structural engineering may suffer dynamic loadings, studies on their mechanical properties under different strain rates are of great importance. In this paper, based on splitting tests of Brazilian discs, the tensile strength and failure pattern of concrete and mortar were investigated under quasi-static and dynamic loadings with a strain rate of 1-200?s(-1). It is shown that the quasi-static tensile strength of mortar is higher than that of concrete since coarse aggregates weaken the interface bonding strength of the latter. Numerical results confirmed that the plane stress hypothesis lead to a lower value tensile strength for the cylindrical specimens. With the increase of strain rates, dynamic tensile strengths of concrete and mortar significantly increase, and their failure patterns change form a single crack to multiple cracks and even fragment. Furthermore, a relationship between the dynamic increase factor and strain rate was established by using a linear fitting algorithm, which can be conveniently used to calculate the dynamic increase factor of concrete-like materials in engineering applications.

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