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TEXon - Development of Uni-directional, Curved, Textile Reinforced Concrete Shells using 3D Textile Structures

The use of textile materials for concrete reinforcement allows for the production of lightweight concrete elements. Technical embroidery techniques available permit the production of flexible, 3D reinforcement structures manufactured from technical fibres including AR-glass and carbon fibres; such elements will allow the reinforcement of curved concrete elements.

In the project, a basis of material data will be established to form technological ground work for the implementation of the new technology in production. The main task of the project is to undertake joint research to define new material properties, embroidery design and technical analysis of reinforced curved concrete. The results will help form the fundamentals for future applications of technical embroidery in textile reinforced concrete for curved elements. This new technique will be beneficial for the production of curved concrete elements which is of particular interest in modern architecture and for concrete elements in technical application.

SMART Embroideries

The use of technical embroidery as reinforcement in curved, concrete structures is new. The advantages of an embroidered 3D textile as reinforcement in curved shapes is of particular interest as the alkaline pH - value of the steel will be permanently protected against corrosion and additionally, the incorporation of functional elements into concrete such as E-installations, heating cables and sensors. Here, by the use of technical embroidery a whole new field of technology will be accessible.

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Research

The project is divided into the following stages:

  1. Design phase: In the first phase, integration of the scientific and technical expertise into the production and processing of embroidered textile reinforcements for the multi-layer plate strip will be developed.
  2. Attempts to produce a textile-reinforced plate strip: Several smaller scale, technical board strips will be constructed and the flexible structure will be analysed. Determination and optimization of the parameters will be established.
  3. Provision of technical and material mechanical properties: Suitability of material properties to be determined and also the respective mechanical properties relating to tensile strength and pressure.
  4. Generation of a uni-directional, curved, textile reinforced concrete shell: Generation of the new technology will be based on the basic unfolding of 2D embroidery. Small scale prototypes will be created and tested before larger scale models are produced.
  5. Technical and Mechanical characteristics: Dimensions and specification for design will be verified subject to testing.
  6. Production Trials: The results for larger scale models are to be addressed subject to practical demonstrations. This will provide further scientific insights into the suitability of such a structure in application.

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Partners

Research Institute for Textile Chemistry and Textile Physics

Smart Embroideries (smart-textiles.mobi)

Institut für Konstruktion und Materialwissenschaften (www.uibk.ac.at/fakultaeten/technische-wissenschaften/institute/konstruktion-und-matwiss)

Ing. Hans Lang Gesellschaft m.b.H. (www.langbau.at)

We thank Austrian Forschungsförderungsgesellschaft for funding "Entwicklung einsinnig gekrümmter textilbewehrter Betonschalen unter Einsatz von 3D-Textilstrukturen" - TEXon, Bridge-Project Nr.841339.

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