Fibre-Reinforced Concrete Segments – From Laboratory to Large-Scale Tests
Due to the regulations currently applied in Austria, it is not possible to manufacture the segments required for TBM tunnelling from fibre-reinforced concrete. For this reason, numerous tests are being carried out as part of a research project supported by the Austrian Research Promotion Agency (FFG) in order to create a basis for the future use of fibre-reinforced concrete segments in Austria.
The project involves carrying out mixing tests with different fibre contents and materials, fresh and hardened concrete tests and large full-scale tests on segments. To ensure that the large-scale tests are as realistic as possible, they are carried out taking into account the normal force acting in a segment ring, which has a correspondingly positive effect on the load-bearing capacity of the fibre-reinforced concrete segments. Finally, the results obtained will be used to develop calculation approaches for dimensioning the fibre-reinforced concrete segments.
Introduction
In an age of scarce...
