Steel Fibre Reinforced Concrete for Tunnel Lining – Verification by Extensive Laboratory Testing and Numerical Modelling

Authors

  • Jaroslav Beňo
  • Matouš Hilar

DOI:

https://doi.org/10.14311/1823

Keywords:

Steel fibre reinforced concrete, segmental tunnel lining, mechanical excavation, laboratory testing

Abstract

The use of precast steel fibre reinforced concrete (SFRC) for tunnel segments is a relatively new application of this material. It was first applied in Italy in the 1980s. However, it did not begin to be widely applied until after 2000. The Czech Technical University in Prague (CTU), together with Metrostav, carried out a study to evaluate the use of this new technology for tunnels in the Czech Republic. The first tests were carried out on small samples (beams and cubes) produced from SFRC to find an appropriate type and an appropriate dosage of fibres. The tests were also used to verify other factors affecting the final product (e.g. production technology). Afterwards, SFRC segments were produced and then tested at the Klokner Institute of CTU. Successful test results confirmed that it was possible to use SFRC segments for Czech transport tunnels. Consequently a 15 m-long section of segmental lining generated from SFRC without steel rebars was constructed as part of line A of the Prague metro.

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Author Biographies

  • Jaroslav Beňo
  • Matouš Hilar

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Published

2013-01-04

Issue

Vol. 53 No. 4 (2013)

Section

Articles

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How to Cite

Beňo, J., & Hilar, M. (2013). Steel Fibre Reinforced Concrete for Tunnel Lining – Verification by Extensive Laboratory Testing and Numerical Modelling. Acta Polytechnica, 53(4). https://doi.org/10.14311/1823