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Experimental characterization of composite-to-brick masonry shear bond

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Abstract

The paper presents a Round Robin Test (RRT) devoted to the characterization of the shear bond performance of fibre-reinforced strengthening systems bonded with epoxy resin to brick masonry. The research was carried out by six laboratories involved in the RILEM TC 250-CSM (Composites for the Sustainable strengthening of Masonry) as a continuation and an extension of a previous RRT1 performed within the RILEM TC 223-MSC (Masonry Strengthening with Composites). In this second investigation (RRT2), the same FRP (basalt, carbon and glass textiles) and SRP (comprising steel textiles) composites were tested, but shear bond tests were carried out on both brick units and masonry prisms. The role of the bed joints of mortar was investigated in terms of shear bond strength, load–displacement response curve, axial strains profile along the bonded area and effective transfer length, for each of the four considered strengthening systems. Single lap and double lap testing setups were used and the comparison of experimental outcomes provided a validation of both results and test methods. Finally, test outcomes led to the determination of the mean and the characteristic values of the experimental-based calibration coefficient provided by design codes for the evaluation of the composite-to-substrate bond strength.

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Authors and Affiliations

  1. University Roma Tre, Rome, Italy

    Gianmarco de Felice, Stefano De Santis & Marialaura Malena

  2. University of Salento, Lecce, Italy

    Maria Antonietta Aiello & Marianovella Leone

  3. University of Bologna, Bologna, Italy

    Alessandro Bellini & Claudio Mazzotti

  4. University of Padova, Padua, Italy

    Enrico Garbin, Matteo Panizza & Maria Rosa Valluzzi

  5. University of Naples “Federico II”, Naples, Italy

    Gian Piero Lignola

  6. University of Naples “Parthenope”, Naples, Italy

    Francesca Ceroni

Authors
  1. Gianmarco de Felice
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  2. Maria Antonietta Aiello
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  3. Alessandro Bellini
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  4. Francesca Ceroni
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  5. Stefano De Santis
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  6. Enrico Garbin
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  7. Marianovella Leone
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  8. Gian Piero Lignola
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  9. Marialaura Malena
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  10. Claudio Mazzotti
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  11. Matteo Panizza
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  12. Maria Rosa Valluzzi
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Correspondence to Gianmarco de Felice.

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de Felice, G., Aiello, M.A., Bellini, A. et al. Experimental characterization of composite-to-brick masonry shear bond. Mater Struct 49, 2581–2596 (2016). https://doi.org/10.1617/s11527-015-0669-4

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  • DOI: https://doi.org/10.1617/s11527-015-0669-4

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