Sustainability Potential of Additive Manufactured Concrete Structures - Studies on the Life Cycle Assessment and Circularity of an Extruded Exterior Wall

被引:1
作者
Thiel, Charlotte [1 ]
Hechtl, C. Maximilian [2 ]
Gehlen, Christoph [2 ]
Kraenkel, Thomas [2 ]
机构
[1] OTH Regensburg, Construct Mat, Regensburg, Germany
[2] Tech Univ Munich, Sch Engn & Design, Dept Mat Engn, Chair Mat Sci & Testing, Munich, Germany
来源
FOURTH RILEM INTERNATIONAL CONFERENCE ON CONCRETE AND DIGITAL FABRICATION, DC 2024 | 2024年 / 53卷
关键词
Life cycle assessment; LCA; additive manufacturing; concrete extrusion; circularity; CHALLENGES;
D O I
10.1007/978-3-031-70031-6_2
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
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.
引用
收藏
页码:13 / 21
页数:9
相关论文
共 18 条
[1]   Potential benefits of digital fabrication for complex structures: Envitonmental assessment of a robotically fabricated concrete-wall [J].
Agusti-Juan, Isolda ;
Muller, Florian ;
Hack, Norman ;
Wangler, Timothy ;
Habert, Guillaume .
JOURNAL OF CLEANER PRODUCTION, 2017, 154 :330-340
[2]  
[Anonymous], 2022, 15804202203 DIN EN
[3]  
[Anonymous], US
[4]   Additive manufacturing of concrete in construction: potentials and challenges of 3D concrete printing [J].
Bos, Freek ;
Wolfs, Rob ;
Ahmed, Zeeshan ;
Salet, Theo .
VIRTUAL AND PHYSICAL PROTOTYPING, 2016, 11 (03) :209-225
[5]   Monolithic AM facade: multi-objective parametric design optimization of additively manufactured insulating wall elements [J].
Briels, David ;
Renz, Mauritz ;
Nouman, Ahmad Saleem ;
Strasser, Alexander ;
Hechtl, Maximilian ;
Dahlenburg, Maximilian ;
Knychalla, Bruno ;
Sonnleitner, Patrick ;
Herding, Friedrich ;
Fleckenstein, Julia ;
Krakovska, Ema ;
Doerfler, Kathrin ;
Auer, Thomas .
FRONTIERS IN BUILT ENVIRONMENT, 2023, 9
[6]  
Dorfler K., AMCcollaborative demonstrators: validation of integrated researchmethodologies through collaborative AMC prototyping, DOI [10.24355/dbbs.084-202310041154-0, DOI 10.24355/DBBS.084-202310041154-0]
[7]  
environdec, Superplasticizer.
[8]   On sustainability and digital fabrication with concrete [J].
Flatt, Robert J. ;
Wangler, Timothy .
CEMENT AND CONCRETE RESEARCH, 2022, 158
[9]  
Hechtl C.M., 2023, ce/papers
[10]   Challenges and Opportunities for Implementing Additive Manufacturing Supply Chains in Circular Economy [J].
Hettiarachchi, Biman Darshana ;
Sudusinghe, Jayani Ishara ;
Seuring, Stefan ;
Brandenburg, Marcus .
IFAC PAPERSONLINE, 2022, 55 (10) :1153-1158