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L'épreuve du tri sur site des déchets de la construction

Abstract : The transformation of the construction sector is of utmost importance to diminish the material footprint of our societies, as it remains the main source of waste generation in many regions worldwide. Yet, construction waste is often mixed on construction sites, and only sorted out afterwards in centralised units, which largely impedes potential material recovery. The implementation of on-site sorting strategies is thereby crucial, although its development does not follow the environmental benefits that are associated with them. This poor diffusion of on-site sorting for construction waste reveals a poor knowledge of the reality of sorting practices on construction sites, which remains an academic and operational blackbox. Through an embedded research within a medium-size French construction company, this article documents the poor practices of sorting construction waste. This phenomenon is often associated with doubts, uncertainties and preconceptions regarding the economic viability of on-site sorting. This paper provides a simple model to test this preconceived idea and the economic interest of on-site sorting, showing that it results in the diminution of waste treatment costs by up to 48% for construction companies. One such result is contrasted with the monitoring of two experiments, where on-site sorting practices are developed, showing the important challenges this operationalisation entails to make the economic interest and the sustainability of the approach converge and coincide.
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https://hal.archives-ouvertes.fr/hal-03313523
Contributor : Daniel Florentin Connect in order to contact the contributor
Submitted on : Wednesday, January 5, 2022 - 12:21:30 PM
Last modification on : Monday, March 28, 2022 - 8:28:04 AM

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Albane Bauby, Daniel Florentin, Vincent Chatain. L'épreuve du tri sur site des déchets de la construction. Environnement, Ingénierie & Développement, Episciences, 2022, pp.3-13. ⟨10.46298/eid.2021.8336⟩. ⟨hal-03313523v3⟩

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