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Experimental behaviour of reinforced concrete elements repaired with polymer-modified cementicious mortar

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Abstract

This paper presents the results of experimental tests on flexural behaviour of reinforced concrete beams repaired by polymer-modified mortar. Tests were repeated varying repair thickness, which included or did not include the steel reinforcement. Also the position of repair mortar was varied, as it was carried out either in the tension or compression region. Finally, the reinforcement ratios of beam sections were also varied. Results were compared with those from control beams, which were tested in non-damaged, non-repaired conditions. Thick repairs that include the longitudinal reinforcement can restore the load-bearing capacity and ductility of non-damaged control beams, whether they are applied in the tension or in the compression region. Thin repairs in tension, which substitute the concrete cover, but do not include the reinforcement, can even decrease the load bearing capacity and ductility of the beam, whereas thin repairs in compression are more effective than those in tension.

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Acknowledgements

The authors gratefully acknowledge Tassullo S.p.A. that provided materials and specimens for experimental testing, and Eng. Fabio Mazzucco for his contribution to the experimental investigation developed during his MSc thesis. The experimental tests were carried out at the Laboratory of Structural Materials Testing of the University of Padova, Italy.

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Authors and Affiliations

  1. Department of Structural and Transportation Engineering, University of Padova, Via Marzolo 9, 35131, Padova, Italy

    Carlo Pellegrino, Francesca da Porto & Claudio Modena

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  1. Carlo Pellegrino
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  2. Francesca da Porto
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  3. Claudio Modena
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Correspondence to Carlo Pellegrino.

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Pellegrino, C., da Porto, F. & Modena, C. Experimental behaviour of reinforced concrete elements repaired with polymer-modified cementicious mortar. Mater Struct 44, 517–527 (2011). https://doi.org/10.1617/s11527-010-9646-0

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  • DOI: https://doi.org/10.1617/s11527-010-9646-0

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