A K^sub IIC^ feszültségintenzitási paraméter kísérleti meghatározása új típusú beton próbatesteken, 2. rész

摘要

Under load, the number of fissures in concrete or reinforced concrete increases, and such cracks will be the starting points of failure. In order to understand failure of such structures, the analysis of the stress state of crack tips is necessary, which is the subject mater of fracture mechanics. Due to material inhomogeneity and different modular coordination, the fracture analysis of concrete is more complex than the original tests devised for metals. While methods and specimens have been developed for tension failure (type I), the mode of examining shear failure (type II) has not yet been unequivocally established. This paper and its sequels focus on the analysis and test procedures of a new, compact specimen for examining the K^sub IIC^ strength intensity factor. [PUBLICATION ABSTRACT]