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Strengthening of three-leaf stone masonry walls: an experimental research

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Abstract

The paper summarizes the results of an experimental research carried out on three-leaf masonry walls of typical granite stone constructions from the North of Portugal. The research aimed at studying the behaviour under compression of this wall typology, as well as the improvements introduced by common strengthening techniques applied for the structural rehabilitation of masonry heritage buildings. Ten masonry specimens were tested, plain or strengthened by transversal tying of the external leaves, with GFRP bars, or/and by injection of the inner leaf, with a lime-based grout. The results obtained showed that these strengthening techniques were successful in increasing the compressive strength of the walls and in improving their behaviour under compressive loads.

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Acknowledgments

The authors would like to thank the technical staff of the Structural Laboratory of University of Minho for the help provided. Acknowledgements are also due to the companies Fradical, Mapei and Augusto de Oliveira Ferreira for providing raw materials and workmanship. Finally, the funding provided by the Portuguese Science and Technology Foundation, through the POCI/ECM/58987/2004 project, is gratefully acknowledged.

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Authors and Affiliations

  1. ISISE, Department of Civil Engineering, University of Minho, Azurém, 4800-058, Guimarães, Portugal

    Daniel V. Oliveira, Rui A. Silva & Paulo B. Lourenço

  2. Department of Structural and Transportation Engineering, University of Padova, 35131, Padua, Italy

    Enrico Garbin

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  1. Daniel V. Oliveira
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  2. Rui A. Silva
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  3. Enrico Garbin
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  4. Paulo B. Lourenço
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Correspondence to Daniel V. Oliveira.

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Oliveira, D.V., Silva, R.A., Garbin, E. et al. Strengthening of three-leaf stone masonry walls: an experimental research. Mater Struct 45, 1259–1276 (2012). https://doi.org/10.1617/s11527-012-9832-3

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  • DOI: https://doi.org/10.1617/s11527-012-9832-3

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