Conference Paper
Advances in 3D Printed Earth Architecture: On-site prototyping with local materials

Recent advances in large scale 3D printing hardware and software have made on-site additive manufacturing possible with locally sourced materials. By calibrating a robust pump system to different combinations of sand, clay and straw, earthen structures can be 3D printed in sections of up to 60 cm a day. Leveraging local material knowledge and traditional mixing techniques, mud mixtures of comparable compressive strength to conventional mudbrick construction can be formulated without the need for synthetic additives. To bridge the gap between the geometric freedom of desktop scale FDM (Fused Deposition Modeling) printing and the limitations of slow drying earthen materials new methods of angled deposition, progressive layer height and multiposition printing are proposed and tested

Title
Publication TypeConference Paper
Year of Publication2020
AuthorsCurth A, Darweesh B, Arja L, Rael R
Conference NameBE-AM Symposium
Date Published11/2020
PublisherBE-AM
Conference LocationDarmstadt, Germany
ISBN Number9798561621192
Keywords3d printed, 3d printed earth, construction robotics, earth architecture
Abstract

Recent advances in large scale 3D printing hardware and software have made on-site additive manufacturing possible with locally sourced materials. By calibrating a robust pump system to different combinations of sand, clay and straw, earthen structures can be 3D printed in sections of up to 60 cm a day. Leveraging local material knowledge and traditional mixing techniques, mud mixtures of comparable compressive strength to conventional mudbrick construction can be formulated without the need for synthetic additives. To bridge the gap between the geometric freedom of desktop scale FDM (Fused Deposition Modeling) printing and the limitations of slow drying earthen materials new methods of angled deposition, progressive layer height and multiposition printing are proposed and tested