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Hybrid Fiber Reinforcement and Crack Formation in Cementitious Composite Materials

Pereira, E. B. / Fischer, G. / Barros, J. A. O.

Abstract The use of different types of fibers simultaneously for reinforcing cementitious matrices is motivated by the concept of a multi-scale nature of the crack propagation process. Fibers with different geometrical and mechanical properties are used to bridge cracks of different sizes from the micro- to the macro- scale. In this study, the performance of different fiber reinforced cementitious composites is assessed in terms of their tensile stress-crack opening behavior. The results obtained from this investigation allow a direct quantitative comparison of the behavior obtained from the different fiber reinforcement systems. The research described in this paper shows that the multi-scale conception of cracking and the use of hybrid fiber reinforcements do not necessarily result in an improved tensile behavior of the composite. Particular material design requirements may nevertheless justify the use of hybrid fiber reinforcements.

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Hybrid Fiber Reinforcement and Crack Formation in Cementitious Composite Materials

Pereira, E. B. / Fischer, G. / Barros, J. A. O.

Abstract The use of different types of fibers simultaneously for reinforcing cementitious matrices is motivated by the concept of a multi-scale nature of the crack propagation process. Fibers with different geometrical and mechanical properties are used to bridge cracks of different sizes from the micro- to the macro- scale. In this study, the performance of different fiber reinforced cementitious composites is assessed in terms of their tensile stress-crack opening behavior. The results obtained from this investigation allow a direct quantitative comparison of the behavior obtained from the different fiber reinforcement systems. The research described in this paper shows that the multi-scale conception of cracking and the use of hybrid fiber reinforcements do not necessarily result in an improved tensile behavior of the composite. Particular material design requirements may nevertheless justify the use of hybrid fiber reinforcements.

Hybrid Fiber Reinforcement and Crack Formation in Cementitious Composite Materials

Pereira, E. B. / Fischer, G. / Barros, J. A. O.

Abstract The use of different types of fibers simultaneously for reinforcing cementitious matrices is motivated by the concept of a multi-scale nature of the crack propagation process. Fibers with different geometrical and mechanical properties are used to bridge cracks of different sizes from the micro- to the macro- scale. In this study, the performance of different fiber reinforced cementitious composites is assessed in terms of their tensile stress-crack opening behavior. The results obtained from this investigation allow a direct quantitative comparison of the behavior obtained from the different fiber reinforcement systems. The research described in this paper shows that the multi-scale conception of cracking and the use of hybrid fiber reinforcements do not necessarily result in an improved tensile behavior of the composite. Particular material design requirements may nevertheless justify the use of hybrid fiber reinforcements.

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Title:

Hybrid Fiber Reinforcement and Crack Formation in Cementitious Composite Materials

Contributors:

Pereira, E. B. (author) / Fischer, G. (author) / Barros, J. A. O. (author)

Published in:

High Performance Fiber Reinforced Cement Composites 6 ; 535-542

RILEM State of the Art Reports ; 2

Publication date:

2012-01-01

Size:

8 pages

ISBN:

978-94-007-2435-8 , 978-94-007-2436-5

ISSN:

2211-0844 , 2211-0852

DOI:

https://doi.org/10.1007/978-94-007-2436-5_65

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Hybrid Composite , Tensile Behavior , Cementitious Composite , Fiber Reinforcement , Engineer Cementitious Composite Engineering , Civil Engineering , Building Materials , Building Repair and Maintenance , Theoretical and Applied Mechanics , Computer-Aided Engineering (CAD, CAE) and Design

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