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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 12 Abstracts search results
Document:
SP250-11
Date:
March 1, 2008
Author(s):
R. Chudoba, B. Möller, K. Meskouris, B. Zastrau, W. Graf, and I. Lepenies
Publication:
Symposium Papers
Volume:
250
Abstract:
Textile-reinforced concrete (TRC) imposes several special requirements on the applicable simulation methods. TRC is highly heterogeneous at several levels of material structures and, therefore, it exhibits a very complex failure process. Examples of interacting effects are the strain localization due to local failure mechanisms in the yarn, bond, and matrix. As a result, except for standard features, the developed models must be able to reproduce discontinuities of the displacement fields, reflect the irregularity of the material structure, special kinematics relations, and the size effect induced either statistically or energetically. This paper reviews the modeling strategies developed and applied in research and development of TRC in the collaborative research centers in Aachen and Dresden.
DOI:
10.14359/20146
SP250-08
H.-W. Reinhardt, M. Krüger, M. Raupach, and J. Orlowsky
Textile-reinforced concrete has great potential for use in lightweight, thin-walled structural components. Since such elements participate directly in load transmission in the structural framework, satisfactory fire resistance is often desirable. Experience until now, however, has been limited with respect to the behavior of textile concrete elements subjected to fire. In this investigation, four fire tests have been performed on textile-reinforced concrete sections (I-profiles), in which one side of the sections was exposed to fire. The textiles tested were AR glass, carbon, and carbon coated with styrene butadiene. These experiments demonstrated that the load-bearing behavior of textile-reinforced structural components in fire greatly depends on the textile used, their bond to the concrete, and the behavior of the concrete under high temperatures.
10.14359/20143
SP250-09
T. Brockmann and W. Brameshuber
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.
10.14359/20144
SP250-10
H. Cuypers and J. Wastiels
Textile-reinforced concrete is an interesting and promising material for thin-walled structural elements. Since sufficient fibers can be included when glass fiber reinforcement is introduced in the form of textiles, a distinct strain-hardening behavior can be obtained beyond the introduction of matrix multiple cracking. However, to improve the range of applications in which this material can be used, stress-strain behavior characteristics and crack control should be globally understood, as well as the parameters influencing them. Both properties are discussed as function of fiber volume fraction, matrix-fiber bundle interface, and the influence of complex fiber-matrix interaction. The constitutive material model that is used in this paper is based on the well-known ACK-theory (Aveston-Cooper-Kelly), but includes the fact that matrix cracking occurs progressively with increasing strength and not at one deterministic stress level.
10.14359/20145
SP250-05
F. Jesse, N. Will, M. Curbach, and J. Hegger
Textile-reinforced concrete (TRC) is a rather new high-performance cementitious composite material. In TRC composites, yarns or rovings from high-performance fibers, such as AR glass and carbon, are processed and oriented in a planar structure. This enables an optimal alignment and arrangement of fibers within structural members and allows for the production of extremely thin concrete components with a high load capacity. This paper gives an overview of some of the most relevant material properties of TRC and the associated mechanisms influencing the mechanical performance of TRC composites.
10.14359/20140
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