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    Flexural behavior of ECC-concrete composite beams reinforced with steel bars

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    Ashour_Construction_&_Building_Materials.pdf (1.744Mb)
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    Publication date
    2018-01-20
    Author
    Ge, W-J.
    Ashour, Ashraf F.
    Ji, X.
    Cai, C.
    Cao, D-F.
    Keyword
    ECC
    Concrete
    Composite beams
    Flexural behavior
    Ductility
    Deflection
    Energy dissipation
    Rights
    © 2017 Elsevier Ltd. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
    Peer-Reviewed
    Yes
    
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    Abstract
    This paper presents analytical technique and simplified formulas for the calculations of cracking, yield and ultimate moments of different cases as well as deflections of ECC-concrete composite beams reinforced with steel bars. The technique is based on the simplified constitutive models of materials, strain compatibility, perforce bond of materials and equilibrium of internal forces and moment. Experimental testing of eleven ECC-concrete composite beams reinforced with steel bars is also presented. All beams tested had the same geometrical dimensions but different steel reinforcement strength and ECC thickness. The proposed formulas showed good agreement with the experimental results of various moment values and deflections. A parametric analysis shows that yield and ultimate moments increase with the increase of concrete strength in case of compression failure but, essentially, remain unchanged in case of tensile failure. With increasing the tensile resistance, for example by increasing ECC height replacement ratio, reinforcement ratio, strength of steel reinforcement and ECC, ultimate curvature and energy dissipation increase in case of tensile failure and decrease in case of compressive failure. On the other hand, ductility and energy dissipation ratio decrease with the increase of reinforcement ratio and strength, but, essentially, remain unchanged with increasing the height replacement ratio and strength of ECC.
    URI
    http://hdl.handle.net/10454/16927
    Version
    Accepted manuscript
    Citation
    Ge W-J, Ashour AF, Ji X et al (2018) Flexural behavior of ECC-concrete composite beams reinforced with steel bars. Construction and Building Materials. 159: 175-188.
    Link to publisher’s version
    https://doi.org/10.1016/j.conbuildmat.2017.10.101
    Type
    Article
    Collections
    Engineering and Informatics Publications

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