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    Single-lap shear bond tests on Steel Reinforced Geopolymeric Matrix-concrete joints

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    Publication date
    2017-02-01
    Author
    Bencardino, F.
    Condello, A.
    Ashour, Ashraf cc
    Keyword
    Fabrics/textiles; Debonding; Fibre/matrix bond; Analytical modelling
    Rights
    © 2016 Elsevier. 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 http://creativecommons.org/licenses/by-nc-nd/4.0/
    Peer-Reviewed
    Yes
    
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    Abstract
    Nowadays Fiber Reinforced Polymers (FRPs) represent a well-established technique for rehabilitation of Reinforced Concrete (RC) and masonry structures. However, the severe degradation of mechanical properties of FRP under high temperature and fire as well as poor sustainability represents major weak points of organic-based systems. The use of eco-friendly inorganic geopolymeric matrices, alternative to the polymeric resins, would be highly desirable to overcome these issues. The present work aims to investigate the bond characteristic of a novel Steel Reinforced Geopolymeric Matrix (SRGM) strengthening system externally bonded to a concrete substrate having low mechanical properties. SRGM composite material consists of stainless steel cords embedded into a fireproof geopolymeric matrix. Single-lap shear tests by varying the bonded length were carried out. The main failure mode observed of SRGM-concrete joints was debonding at the fiber-matrix interface. Test results also suggest the effective bond length. On the basis of the experimental results, a cohesive bond-slip law was proposed.
    URI
    http://hdl.handle.net/10454/10914
    Version
    Accepted Manuscript
    Citation
    Bencardino F, Condello A and Ashour AF (2017) Single-lap shear bond tests on Steel Reinforced Geopolymeric Matrix-concrete joints. Composites Part B: Engineering. 110: 62-71.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.compositesb.2016.11.005
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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