Log In    |    Join IASS    |    Online Journal    |    Proceedings    |    Directory    |    Events    |    News

Online IASS Proceedings

IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints


IASS Symposium 2014

SESSION: Concrete Shell Roofs

Hydrostatic equilibrium moulding for production of concrete shell structures

< Table of Contents for Concrete Shell Roofs
  • Proceedings Name: IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints
  • ISSN: (Electronic Version) 2518-6582
  • Session: Concrete Shell Roofs
  • Title: Hydrostatic equilibrium moulding for production of concrete shell structures
  • Author(s): Frank OMLOO
  • Keywords: Hydrostatic Equilibrium Moulding, concrete moulding, concrete prefabrication, 3D printing,
Abstract
The rigidity of traditional formwork poses a serious constraint for making truly free formed concrete building elements. The hydrostatic pressure as is exerted by wet concrete upon the formwork, requires the formwork to be stiff and strong. This requirement limits the feasibility of, let’s say, a double curved concrete shell. For this purpose one would prefer lighter and more ductile materials, which would enhance a more sculptural approach to the fabrication of formwork. Hydrostatic Equilibrium Moulding could resolve these seemingly incompatible combination of requirements. Because with Hydrostatic Equilibrium Moulding the excerted hydrostatic pressure to the mould is reduced to zero. This will make rigidity to an obsolete feature of a mould design. Subsequently a whole range of new materials and fabrication methods can be applied to moulds. In this article we will explore in particular one interesting combination of materials and methods. We have been lining up a 3D printer for producing moulds with a Hydrostatic Equilibrium Mould for forming concrete shell segments. With such a line-up the advantages of digital fabrication can be utilized to their full potential. The process is demonstrated by building an experimental, prefabricated and double curved concrete shell structure. In terms of free forming capabilities and dimensional complexity this would prove the feasibility of this setup.

Read the complete paper (pdf) (requires membership)
© IASS All rights reserved.
IASS · CEDEX - Laboratorio Central de Estructuras y Materiales · C/ Alfonso XII, 3 · 28014 Madrid, Spain     tel. 34 91 335-7409; fax: 335-7422
Site Design & Programming
by World Design Group, Inc.