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Load-bearing behaviour of textile-reinforced concrete members - Tests and calculations
The use of textiles as reinforcement in concrete structures opens up many new applications for composite members. Cracks will appear systematically in textile reinforced concrete because the concrete tensile strength is low. Multi-axial multi-ply fabrics are used very successful in the field of composite plastics. This is due to cost-efficient production and the excellent mechanical properties of the textiles used. For the investigations a bi-axial structure and a tri-axial structure was used. The stress-strain curve consists of four linear components. Different models for the prescription of the behaviour of reinforced concrete have been developed. The model for the finite element computation is presented. The tensile tests and bending tests with textile reinforced concrete members show that the load-bearing performance can be increased considerably. The bonding behaviour affects the cracking process as well as the load-bearing behaviour. The interaction of internal and external bonding in particular has a major influence as the experiments and finite element simulations have shown. The computation models presented here are based on the results of pilot tests. Further experimental and theoretical research is of essential importance in order to make a reliable prediction possible for the load-bearing behaviour of textile-reinforced structures. The prediction for the bending behaviour of reinforced profiles is possible with the results from the tensile test. The material behaviour of the compression zone was approximated in the calculation by a double-linear stress-strain diagram with a maximum compression strength of 90 N/qmm. A general transfer of the tension test results to other matrix-textile-reinforcement combinations is not possible because the bending behaviour is significantly influenced by the bonding behaviour.
Load-bearing behaviour of textile-reinforced concrete members - Tests and calculations
The use of textiles as reinforcement in concrete structures opens up many new applications for composite members. Cracks will appear systematically in textile reinforced concrete because the concrete tensile strength is low. Multi-axial multi-ply fabrics are used very successful in the field of composite plastics. This is due to cost-efficient production and the excellent mechanical properties of the textiles used. For the investigations a bi-axial structure and a tri-axial structure was used. The stress-strain curve consists of four linear components. Different models for the prescription of the behaviour of reinforced concrete have been developed. The model for the finite element computation is presented. The tensile tests and bending tests with textile reinforced concrete members show that the load-bearing performance can be increased considerably. The bonding behaviour affects the cracking process as well as the load-bearing behaviour. The interaction of internal and external bonding in particular has a major influence as the experiments and finite element simulations have shown. The computation models presented here are based on the results of pilot tests. Further experimental and theoretical research is of essential importance in order to make a reliable prediction possible for the load-bearing behaviour of textile-reinforced structures. The prediction for the bending behaviour of reinforced profiles is possible with the results from the tensile test. The material behaviour of the compression zone was approximated in the calculation by a double-linear stress-strain diagram with a maximum compression strength of 90 N/qmm. A general transfer of the tension test results to other matrix-textile-reinforcement combinations is not possible because the bending behaviour is significantly influenced by the bonding behaviour.
Load-bearing behaviour of textile-reinforced concrete members - Tests and calculations
Das Belastungsverhalten von textilverstärktem Beton - Prüfungen und Berechnungen
Hegger, J. (author) / Döinghaus, P. (author) / Littwin, R. (author) / Will, N. (author) / Bischoff, T. (author) / Wulfhorst, B. (author)
Techtextil, Techtextil Symposium, 8 ; 5 ; 1-6
1999
6 Seiten, 11 Bilder, 5 Quellen
Conference paper
English
Load-bearing behaviour and simulation of textile reinforced concrete
| British Library Online Contents | 2006
Load–bearing behaviour and simulation of textile reinforced concrete
| Online Contents | 2006
Load–bearing behaviour and simulation of textile reinforced concrete
| British Library Online Contents | 2006
Load–bearing behaviour and simulation of textile reinforced concrete
| Springer Verlag | 2006
Load–bearing behaviour and simulation of textile reinforced concrete
| Online Contents | 2006