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Construire en terres d'excavation, un enjeu pour la ville durable

Hugo Gasnier 1 
1 CRAterre - CRAterre
AE&CC - Architecture, Environnement & Cultures Constructives
Abstract : This thesis explores the potentials of using excavated earth as a building material and examines the relevance of a valorization of this resource for sustainable buildings in the actual French context with a more particular focus on the Parisian region. It is structured around a double question within the framework of the ecological transition of the inhabited environment: is it relevant to transform the excavated earth of the construction sites of major urban centers into a resource for architecture and which are the potentials for the construction of a sustainable city ?The growth of big cities is generating millions of tons of excavated earth yearly, issued from the necessary earthworks for the construction of new buildings or excavated during the creation of transport infrastructures (tunnels, railway stations, roads,…). On is own, the Grand Paris Express construction site « should generate 30 to 40 millions of tons »[1] of excavated earth that will be principally shipped by barges out of Paris to be stocked or buried in adapted sites. This process has a huge financial, energetical and ecological cost, and a potential usable resource is buried, hence the importance of the question on the possibilities of using this earth as a building material.At the beginning of this thesis in 2015, few researches and even less practices had been done on the subject. But, ever since the first meetings, the actors expressed their interest for the possible valorization of the excavated earth as a resource.On one hand, it was time to make an inventory of the scientific knowledges of the material earth, the current practices in earthen architecture and the professional earthen building specialists. On the other hand, it was necessary to decrypt the context and the system of actors around the excavated earth in the Grand Paris territory. Finally, the presence of motivated actors in the Grand Paris has facilitated the prospective reflection on the potential use of these earths in architecture including having the opportunity to observe the first concrete results.
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Submitted on : Wednesday, June 26, 2019 - 12:17:43 PM
Last modification on : Tuesday, April 19, 2022 - 10:10:31 AM


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  • HAL Id : tel-02165900, version 1



Hugo Gasnier. Construire en terres d'excavation, un enjeu pour la ville durable. Art et histoire de l'art. Université Grenoble Alpes, 2019. Français. ⟨NNT : 2019GREAH001⟩. ⟨tel-02165900⟩



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