FATIGUE VIBRATION STRENGTH OF REINFORCING STEELS WITH CURVATURES OF AT LEAST D=4D(E)

DAUERSCHWINGFESTIGKEIT VON BEWEHRUNGSSTAEHLEN MIT ABKRUEMMUNGEN VON MINIMAL D = 4 D(E)

THE FATIGUE VIBRATION STRENGTH OF BARS HAVING CURVATURES OF D % 5 (7) D(E) IN THE TYPICAL, COMMERCIALLY AVAILABLE STRUCTURAL STEELS BST 42/50 RU AND RK AND BST 50/55 RU (NEW TYPES) AND RK, INITIALLY LIMITED TO SIZE 6 - 16 MM, IS TO BE DETERMINED.