2025-01-24 マサチューセッツ工科大学 (MIT)
“What’s cool here is we’re able to make shape-optimized building elements for the same amount of time and energy it would take to make rectilinear building elements,” says Sandy Curth (standing in back). Credit: Saleh Jamsheer
＜関連情報＞
- https://news.mit.edu/2025/how-good-old-mud-can-lower-building-costs-0124
- https://www.sciencedirect.com/science/article/abs/pii/S0950061824035293
アースワークス：形状最適化された鉄筋コンクリート建設のための、廃棄物ゼロの3Dプリント土型枠 EarthWorks: Zero waste 3D printed earthen formwork for shape-optimized, reinforced concrete construction
Alexander Curth, Natalie Pearl, Emily Wissemann, Tim Cousin, Latifa Alkhayat, Vincent Jackow, Keith Lee, Oliver Moldow, Mohamed Ismail, Caitlin Mueller, Lawrence Sass
Construction and Building Materials Available online: 18 September 2024
DOI:https://doi.org/10.1016/j.conbuildmat.2024.138387
Highlights
- Earthworks is an earth-based, zero-waste, geometrically flexible formwork for reinforced concrete.
- Cast-in-place, tilt-up, and prefabricated prototypes are produced at an architectural scale.
- EarthWorks is adaptable to varying structural requirements and local codes.
- Parametric buttressing for hydrostatic pressure facilitates rapid, large-scale casting.
- Earthen materials can be acquired at low to no cost from local construction sites.
Abstract
Rapid global urbanization is driving governments and builders to seek paradigm-shifting technologies to speed the construction of housing and infrastructure at a low economic and carbon cost. Here, we present a novel method for fabricating materially efficient, shape-optimized, code-compliant, reinforced concrete structures cast in directly recyclable 3D printed earth formwork, hereby referred to as EarthWorks. This research demonstrates the potential of zero waste, circular formwork that can be manufactured with construction waste soils directly on site. Methods are described for formwork design and toolpathing that accounts for hydrostatic pressure, conventional reinforcement, high accuracy connections, and the fabrication of complex, 3D-shaped geometry with continuous extrusion. In addition, the building design and performance potential of the EarthWorks method are assessed and compared to existing additive formwork technologies from a carbon perspective. Case studies are fabricated demonstrating cast-in-place, tilt-up, and on-site prefab methods to produce bespoke columns, beams, and frames designed to California building code.
