Deterioration development of steel fibre reinforced high performance concrete in low-cycle fatigue

摘要

In this contribution, the deterioration behaviour of steel fibre reinforced high performance concrete beams in flexural tests is described and analysed. The focus is drawn on quasi-static low-cycle tests in an attempt to derive the development of stiffness, plastic deformation after unloading, and the hysteresis energy of individual load cycles depending on the amount of fibres used per specimen. To achieve this goal, different fibre quantities from plain concrete up to 1.5 vol.-% are looked into. The full paper also links the findings to high-cycle experiments as well as a brief outline of using the acquired data in a numeric phase-field model.