Robotic 3D Printing of Geopolymer Foam for Lightweight and Insulating Building Elements
Open access
Date
2023-02-15Type
- Journal Article
Abstract
Foam 3D printing in construction is a promising manufacturing approach that aims to reduce the amount of material, hazardous labor, and costs in producing lightweight and insulating building parts that can reduce the operational energy in buildings. Research using cement-free mineral foams derived from industrial waste showed great potential in previous studies that reduced the amount of concrete needed in composite structures. This article collates the latest developments in this line of work. It presents the material system with its principal components and the advanced robotic 3D printing setup with a climate-controlled fabrication chamber. Print path schemes and hybrid fabrication methods combining 3D printing and casting are evaluated. Furthermore, the article discusses the effect of different print path schemes on the thermal insulation and compressive strength performance of printed parts. A full-scale final prototype synthesizes these findings and demonstrates the fabrication of modular, lightweight, and insulating construction elements that can be assembled into monolithic wall structures. The advantages and challenges of this novel approach are elaborated on in the conclusions. Finally, the article presents future advancements required to leverage this research as a scalable construction method that can help address the biggest challenges in building low-carbon and energy-efficient structures. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000644343Publication status
publishedExternal links
Journal / series
3D Printing and Additive ManufacturingVolume
Pages / Article No.
Publisher
Mary Ann LiebertSubject
Digital fabrication; 3d printing; Construction automation; Sustainable construction; Computational designOrganisational unit
09566 - Dillenburger, Benjamin / Dillenburger, Benjamin
02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
Funding
ETH-01 19-2 - 3D printing of functional graded inorganic foam (ETHZ)
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