Computed Tomography - tracking the Fibres Investigations on the Factor for Considering the Fiber Orientation according to the K-F(f) DAfStb-Guideline 'Steel Fiber Reinforced Concrete' using the Example of Tunnel Segments

摘要

An analytical method based on the image analysis of 3D-computed tomography makes it possible to determine orientation, distribution and quantity of fibers within the concrete specimen, which has to be examined. The following review focus on the practical application of this new method to answer typical questions within construction engineering. The analysis of drill cores extracted from tunnel segments to examine the influence of production method on the orientation of fibers and their spatial distribution is only one example for the applicability of this method. In this case, the focus of the accomplished work was on the determination of the factor to consider the fiber orientation according to the DAfStb-guideline Stahlfaserbeton (steelfibre reinforced concrete).