Architectural Scale Rotational Casting Methodology for Fabricating Lightweight High-Performance Hollow Concrete Building Elements
Prof. Yasha Jacob Grobman, prof. emerit Arnon Bentur, Prof. Aaron Sprecher
Rotational casting is a well-known method for molding hollow curved geometries. It utilizes centrifugal forces generated by a biaxial rotation on two perpendicular axes to disperse the flowing material until it adheres to the walls of the mold and is left to harden. While this process is highly efficient for producing hollow plastic objects, this method was not employed for commonly used inorganic types of cement due to long hardening time of conventional cementitious mixtures and poor workability characteristics in comparison to liquid polymers. The presented research offers a method for using rotational casting with a specific inorganic cement. This research includes a review of recent publications in the experimental field of rotational casting. This survey provides a framework for the development of a unique Architectural Scale Rotational Casting (ASRC) robotic system that is capable of producing mass-customized hollow complex elements ranging in size, shape, and weight. This robotic fabrication system provided the theme to create a rich catalogue of fabricated typologies that are compared in terms of their potential to contribute to architectural design. This research will conclude with a discussion on the advantages and limitations of the suggested method in comparison to the equivalent construction methods used today.