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A new method to advance complex geometry thin-walled glass fibre reinforced concrete elements

Henriksen, Thomas and Lo, Stephen and Knaack, Ulrich (2016):
A new method to advance complex geometry thin-walled glass fibre reinforced concrete elements.
In: Journal of building engineering, pp. 243-251, 6, DOI: 10.1016/j.jobe.2016.04.002,
[Article]

Abstract

Complex geometry concrete is being used in building and infrastructure projects, however costly in-situ mouldings are necessary to achieve these geometries. Advancing discretised concrete shell structures requires the development of a new moulding system at lower cost and reduced mould production times. Future thin-walled glass fibre reinforced concrete (GFRC) elements must possess good surface quality, with the required edge returns and offsets, combined with the physical material properties to increase spans and lower the risk of visible surface cracks. Existing moulding systems do not have the capability to meet these contemporary architectural aesthetic and design aspirations. A new mould system to produce freeform thin-walled GFRC elements is presented and can be used to replace CNC milled moulds for the manufacture of thin walled GFRC. Such a system allows the mould for thin-walled GFRC elements to be produced in a fast, cost effective and more efficient manner. A step-by-step process to achieve such thin-walled GFRC panels is described permitting the fabrication of complex geometry thin-walled GFRC elements using more cost effective large-scale production methods. This process bridges the gap between the limited capabilities of current solutions and the architectural aesthetic demands for good surface quality, with the option of having an edge-return of the same surface quality as the front surface to give a monolithic appearance.

Item Type: Article
Erschienen: 2016
Creators: Henriksen, Thomas and Lo, Stephen and Knaack, Ulrich
Title: A new method to advance complex geometry thin-walled glass fibre reinforced concrete elements
Language: English
Abstract:

Complex geometry concrete is being used in building and infrastructure projects, however costly in-situ mouldings are necessary to achieve these geometries. Advancing discretised concrete shell structures requires the development of a new moulding system at lower cost and reduced mould production times. Future thin-walled glass fibre reinforced concrete (GFRC) elements must possess good surface quality, with the required edge returns and offsets, combined with the physical material properties to increase spans and lower the risk of visible surface cracks. Existing moulding systems do not have the capability to meet these contemporary architectural aesthetic and design aspirations. A new mould system to produce freeform thin-walled GFRC elements is presented and can be used to replace CNC milled moulds for the manufacture of thin walled GFRC. Such a system allows the mould for thin-walled GFRC elements to be produced in a fast, cost effective and more efficient manner. A step-by-step process to achieve such thin-walled GFRC panels is described permitting the fabrication of complex geometry thin-walled GFRC elements using more cost effective large-scale production methods. This process bridges the gap between the limited capabilities of current solutions and the architectural aesthetic demands for good surface quality, with the option of having an edge-return of the same surface quality as the front surface to give a monolithic appearance.

Journal or Publication Title: Journal of building engineering
Volume: 6
Uncontrolled Keywords: Casting, Complex, Flexible, Geometry, GFRC, Moulds
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute für Structural Mechanics and Design
13 Department of Civil and Environmental Engineering Sciences > Institute für Structural Mechanics and Design > Facade Structures
13 Department of Civil and Environmental Engineering Sciences > Institute für Structural Mechanics and Design > Structural Engineering and Dynamics of Structures
13 Department of Civil and Environmental Engineering Sciences > Institute für Structural Mechanics and Design > Structural Engineering
Date Deposited: 09 Jul 2018 10:14
DOI: 10.1016/j.jobe.2016.04.002
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