Size Effects of Fine-Grained Concrete Used for Textile-Reinforced Concrete

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Title: Size Effects of Fine-Grained Concrete Used for Textile-Reinforced Concrete

Author(s): T. Brockmann and W. Brameshuber

Publication: Special Publication

Volume: 250

Issue:

Appears on pages(s): 111-130

Keywords: compression; flexural strength; size effect; tension; textile-reinforced concrete

Date: 3/1/2008

Abstract:
As textile-reinforced concrete structures have small but a wide range of wall thicknesses, appropriate specimen sizes and testing procedures need to be defined. The objective of this paper is to derive the mechanical and fracture mechanical characteristics of the newly developed binder systems in relation to the possible size effects. The influence of specimen size and geometry on the compressive and flexural strength was investigated directly by experimental investigations on specimens of different sizes with a size range of 1:8. Subsequently, the results were analyzed with the size effect law (SEL) of Bazant and by means of FE analysis according to the fictitious crack model (FCM) of Hillerborg. Furthermore, the s-e relation for compression and tension as well as the s-w curve for tension were derived as being required for dimensioning TRC structures.