Double curved concrete surfaces with precisely embedded optical fibres displaying live images

Johannes Portielje Rauff Greisen

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Double curved concrete surfaces with precisely embedded optical fibres displaying live images

Article by Johannes R. Greisen, Lars Nyholm Thrane, Claus Pade et al. Featured at Nordic Concrete Research Symposium in Tampere, 29 May - 2 June 2011

Abstract

Optic fibres for light transmission through concrete can be used to show live images on concrete surfaces. The technology has been developed by Dupont Lightstone for planar concrete screens. Using the technology on double curved surfaces involves a major challenge in achieving accurate fibre positioning and formwork rigidity maintaining fibres orthogonal to the surface during casting and allowing reasonable deforming. This paper describes the development of the next generation of optic fibre formwork featuring three and five axes robotic operations and finished cast items, which are used to evaluate the precision and feasibility of the technology.

Key words: Advanced formwork, Optic Fibres, Robotics, CAD, CAM, Concrete Surface, Complex Shape, Double curved.