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Interactions between Seismic Safety and Energy Efficiency for Masonry Infill Walls: A Shift of the Paradigm

Author

Listed:
  • André Furtado

    (CONSTRUCT-LESE, Department of Civil Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal)

  • Hugo Rodrigues

    (RISCO, Department of Civil Engineering, University of Aveiro, 3810-193 Aveiro, Portugal)

  • António Arêde

    (CONSTRUCT-LESE, Department of Civil Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal)

  • Fernanda Rodrigues

    (RISCO, Department of Civil Engineering, University of Aveiro, 3810-193 Aveiro, Portugal)

  • Humberto Varum

    (CONSTRUCT-LESE, Department of Civil Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal)

Abstract

Currently, the upgrade of existing reinforced concrete (RC) buildings focuses only on energy retrofitting measures due to the current policies promoted in the scope of the European Green Deal. However, the structural deficiencies are not eliminated, leaving the building seriously unsafe despite the investment, particularly in seismic-prone regions. Moreover, the envelopes of existing RC buildings are responsible for their energy efficiency and seismic performance, but these two performance indicators are not usually correlated. They are frequently analyzed independently from each other. Based on this motivation, this research aimed to perform a holistic performance assessment of five different types of masonry infill walls (i.e., two non-strengthened walls, two walls with seismic strengthening, and one wall with energy strengthening). This performance assessment was performed in a three-step procedure: (i) energy performance assessment by analyzing the heat transfer coefficient of each wall type; (ii) seismic performance assessment by analyzing the out-of-plane seismic vulnerability; (iii) cost–benefit performance assessment. Therefore, a global analysis was performed, in which the different performance indicators (structural and energy) were evaluated. In addition, a state-of-the-art review regarding strengthening techniques (independent structural strengthening, independent energy strengthening, and combined structural plus energy strengthening) is provided. From this study, it was observed that the use of the external thermal insulation composite system reduced the heat transfer coefficient by about 77%. However, it reduced the wall strength capacity by about 9%. On the other hand, the use of textile-reinforced mortar improved the strength and deformation capacity by about 50% and 236%, but it did not sufficiently reduce the heat transfer coefficient. There is a need to combine both techniques to simultaneously improve the energy and structural energy performance parameters.

Suggested Citation

  • André Furtado & Hugo Rodrigues & António Arêde & Fernanda Rodrigues & Humberto Varum, 2022. "Interactions between Seismic Safety and Energy Efficiency for Masonry Infill Walls: A Shift of the Paradigm," Energies, MDPI, vol. 15(9), pages 1-29, April.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3269-:d:806017
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    References listed on IDEAS

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    1. Siyuan Xian & Ning Lin & Adam Hatzikyriakou, 2015. "Storm surge damage to residential areas: a quantitative analysis for Hurricane Sandy in comparison with FEMA flood map," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(3), pages 1867-1888, December.
    2. Jacek Michalak, 2021. "External Thermal Insulation Composite Systems (ETICS) from Industry and Academia Perspective," Sustainability, MDPI, vol. 13(24), pages 1-18, December.
    3. Antonio Artino & Gianpiero Evola & Giuseppe Margani & Edoardo Michele Marino, 2019. "Seismic and Energy Retrofit of Apartment Buildings through Autoclaved Aerated Concrete (AAC) Blocks Infill Walls," Sustainability, MDPI, vol. 11(14), pages 1-21, July.
    4. Tomasz Kisilewicz, 2019. "On the Role of External Walls in the Reduction of Energy Demand and the Mitigation of Human Thermal Discomfort," Sustainability, MDPI, vol. 11(4), pages 1-20, February.
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