Tragverhalten biege- und querkraftbeanspruchter Bauteile aus funktional gradiertem Beton

Load bearing behaviour of functionally graded concrete components under flexural and shear stress

The grading of concrete components enables the adaptation of the internal material distribution according to static demands and requirements related to building physics. Customized elements can be fabricated by changing the concrete porosity continuously in three dimensions. In order to utilize the potential of this new construction method, the load bearing behaviour needs to be investigated and design methods need to be developed.
The following describes the analyses and assumptions that were applied for the design of graded concrete elements. The influence of the gradient layout and of the reinforcement type on the flexural load bearing behaviour was determined experimentally. The shear capacity was investigated as a function of the shear slenderness ratio and compared to the design values computed according to the national code. The present article is intended to aid the understanding of the specific characteristics of the load bearing behaviour of functionally graded concrete elements.