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Environmental Performance of Deconstructable Concrete Beams Made with Recycled Aggregates

Author

Listed:
  • Lucas Caon Menegatti

    (Department of Civil Engineering, Universidade Federal do Rio de Janeiro, Ilha do Fundão-Cidade Universitária, Rio de Janeiro 21941-594, Brazil)

  • Letícia Ikeda Castrillon Fernandez

    (Department of Civil Engineering, Universidade Federal do Rio de Janeiro, Ilha do Fundão-Cidade Universitária, Rio de Janeiro 21941-594, Brazil)

  • Lucas Rosse Caldas

    (Department of Civil Engineering, Universidade Federal do Rio de Janeiro, Ilha do Fundão-Cidade Universitária, Rio de Janeiro 21941-594, Brazil)

  • Marco Pepe

    (Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
    TESIS srl, Via Giovanni Paolo II 132, 84084 Fisciano, Italy)

  • Francesco Pittau

    (Department of Architecture, Built Environment and Construction Engineering (DABC), Politecnico di Milano, Via Ponzio 31, 20133 Milano, Italy)

  • Giulio Zani

    (Department of Civil and Environmental Engineering (DICA), Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy)

  • Marco Carlo Rampini

    (Department of Civil and Environmental Engineering (DICA), Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy)

  • Julien Michels

    (re-fer AG, Riedmattli 9, 6423 Seewen, Switzerland)

  • Romildo Dias Toledo Filho

    (Department of Civil Engineering, Universidade Federal do Rio de Janeiro, Ilha do Fundão-Cidade Universitária, Rio de Janeiro 21941-594, Brazil)

  • Enzo Martinelli

    (Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
    TESIS srl, Via Giovanni Paolo II 132, 84084 Fisciano, Italy)

Abstract

The construction sector is one of the most energy-intensive and raw-material-demanding human activities and, hence, contributes a significant share of greenhouse gas emissions. As a matter of principle, making the construction sector “greener” is one of the main challenges for policy makers, private companies and the scientific community. For this reason, one of the most promising actions is based on recycling Construction and Demolition Waste (CDW) and converting them into secondary raw materials for the construction sector itself. Moreover, the reduction of the environmental impact can be further amplified through the optimization of the production, assembly and deconstruction/reuse procedures and through the maximization of the service life. In this aim, the present work aims at analyzing the environmental performance of duly sized and designed prefabricated Decontructable and Reusable Beam (DRB) incorporating with Recycled Concrete Aggregates (RCA) assembled by means of an innovative system based on a memory ® -steel prestressing technique. The environmental performance is evaluated through Life Cycle Assessment with a cradle-to-gate approach: the analysis of 16 midpoint impact categories was conducted using the methodology proposed by EN15804. In this context, three allocation scenarios for avoided impacts due to reuse (100-0, 50:50 and 0-100) were considered, and a sensitivity analysis was performed. It was verified that due to the higher amount of post-tensioning required for the innovative shape memory alloy steel bars, the DRBs present inferior environmental performance than the Ordinary Beams (ORB). However, when analyzing the reuse scenarios, it was observed that the DRB could have considerably lower impacts, depending on the type of allocation procedure adopted in LCA modeling. This study brings as the main contribution an evaluation and some design guidelines for the development of circular concrete structures based on the principles of Design for Deconstruction (DfD) and the prefabricated process.

Suggested Citation

  • Lucas Caon Menegatti & Letícia Ikeda Castrillon Fernandez & Lucas Rosse Caldas & Marco Pepe & Francesco Pittau & Giulio Zani & Marco Carlo Rampini & Julien Michels & Romildo Dias Toledo Filho & Enzo M, 2022. "Environmental Performance of Deconstructable Concrete Beams Made with Recycled Aggregates," Sustainability, MDPI, vol. 14(18), pages 1-25, September.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:18:p:11457-:d:913459
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    References listed on IDEAS

    as
    1. Thiago Melo Grabois & Lucas Rosse Caldas & Nathália Rodrigues Julião & Romildo Dias Toledo Filho, 2020. "An Experimental and Environmental Evaluation of Mortars with Recycled Demolition Waste from a Hospital Implosion in Rio de Janeiro," Sustainability, MDPI, vol. 12(21), pages 1-18, October.
    2. Lahiba Imtiaz & Sardar Kashif-ur-Rehman & Wesam Salah Alaloul & Kashif Nazir & Muhammad Faisal Javed & Fahid Aslam & Muhammad Ali Musarat, 2021. "Life Cycle Impact Assessment of Recycled Aggregate Concrete, Geopolymer Concrete, and Recycled Aggregate-Based Geopolymer Concrete," Sustainability, MDPI, vol. 13(24), pages 1-19, December.
    3. Luisa Pani & Lorena Francesconi & James Rombi & Fausto Mistretta & Mauro Sassu & Flavio Stochino, 2020. "Effect of Parent Concrete on the Performance of Recycled Aggregate Concrete," Sustainability, MDPI, vol. 12(22), pages 1-17, November.
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    Cited by:

    1. Anna Luthin & Marzia Traverso & Robert H. Crawford, 2024. "Circular life cycle sustainability assessment: An integrated framework," Journal of Industrial Ecology, Yale University, vol. 28(1), pages 41-58, February.

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