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Development of Loop-Shaped Textile Anchoring Reinforcements Based on Multiaxial Warp Knitting Technology

Research and development

Authors:

  • Rittner Steffen
    Institute of Textile Machinery and High Performance Material Technology, Faculty of Mechanical Science and Engineering, Technical University of Dresden, Dresden, Germany
  • Speck Kerstin
    Institute of Concrete Structures (IMB), Technische Universität Dresden, Dresden, Germany
  • Seidel André
    Institute of Textile Machinery and High Performance Material Technology, Faculty of Mechanical Science and Engineering, Technical University of Dresden, Dresden, Germany
  • Ewertowski Mateusz
    PERI Polska Sp. z o.o., Plochocin, Poland
  • Curbach Manfred
    Institute of Concrete Structures (IMB), Technische Universität Dresden, Dresden, Germany
  • Cherif Chokri
    Institute of Textile Machinery and High Performance Material Technology, Faculty of Mechanical Science and Engineering, Technical University of Dresden, Dresden, Germany

Nr DOI: 0.5604/01.3001.0014.3800

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Abstract:

Due to the General Building Approval granted for the strengthening of steel reinforced concrete structures by means of textile reinforced concrete, the foundation for its introduction into practice was successfully established. It approves textile reinforcements in the form of non-crimp fabrics made of carbon fibre heavy tows with high yarn fineness. Thus, it is aimed at increasing the amount of filaments per roving in order to minimise the number of reinforcing layers required. However, the relation between the surface and cross-sectional area is compromised once fineness is increased, leading to an unfavourable enlargement of anchoring and overlapping lengths. Therefore, a recently concluded research project evaluated if this challenge can be overcome by means of a loop-shaped selvedge. This paper presents the results generated within these investigations, proving the potential of the textile-based solution. Moreover, required machine modifications based on multiaxial warp knitting technology for the integral and continuous manufacturing of anchoring textile reinforcements as well as significant results derived from bonding tests will be introduced.

Tags:

textile reinforced concrete, carbon fibre heavy tow reinforcement, anchoring length, overlapping length, multiaxial warp knitting technology.

Citation:

Rittner S, Speck K, Seidel A, Ewertowski M, Curbach M, Cherif C. Development of Loop-Shaped Textile Anchoring Reinforcements Based on Multiaxial Warp Knitting Technology. FIBRES & TEXTILES in Eastern Europe  2020; 28, 6(144): 64-71. DOI: 10.5604/01.3001.0014.3800

Published in issue no 6 (144) / 2020, pages 64–71.

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