TY - CHAP A1 - Thiel, Charlotte A1 - Hechtl, C. Maximilian A1 - Gehlen, Christoph A1 - Kränkel, Thomas ED - Lowke, Dirk ED - Freund, Niklas ED - Böhler, David ED - Herding, Friedrich T1 - Sustainability Potential of Additive Manufactured Concrete Structures – Studies on the Life Cycle Assessment and Circularity of an Extruded Exterior Wall T2 - Fourth RILEM International Conference on Concrete and Digital Fabrication (DC 2024), Munich, Germany, September 2024 N2 - The Brundtland Report defined sustainable development as a development that meets the needs of the present without compromising the ability of future generations to meet their own needs. If this definition is applied to the construction sector, a new, circular approach to cementitious materials is required. Additive manufacturing (AM) enables to design material-efficient and monolithic structures that meet physical and chemical requirements of building standards while allowing reuse or high-quality recycling of concrete. Here, the environmental impact as well as the circularity potential of an additively manufactured exterior wall, produced by 3D concrete extrusion, are determined. To classify the results, the additively manufactured exterior wall is compared with a conventional concrete construction. Finally, various options for optimizing the printed wall are considered and evaluated. Additive manufacturing enabled significant material savings compared to conventional construction. The environmental impacts strongly depend on the used concrete composition. For example, greenhouse gas emissions could be reduced by 20% when changing the type of lightweight aggregate. The additively manufactured exterior wall exhibited advantages in terms of circularity. Through further development and research, additive manufacturing of concrete can promote a paradigm shift towards sustainable practices. Y1 - 2024 SN - 978-3-031-70030-9 U6 - https://doi.org/10.1007/978-3-031-70031-6_2 SP - 13 EP - 21 PB - SPRINGER INTERNATIONAL PU ER -