Load–bearing behaviour and simulation of textile reinforced concrete

Hegger, Josef; Will, Norbert; Bruckermann, Oliver; Voß, Stefan

doi:10.1617/s11527-005-9039-y

Cited by 215 publications

(86 citation statements)

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“…In Bild 7 ist die Querschnittsausnutzung beispielhaft für das südliche Endfeld dargestellt. Die Bemessung des Textilbetonquerschnitts erfolgte nach [5] auf Basis der in [6,7] …”

Section: Querschnittstragfähigkeitunclassified

Schlanke Fußgängerbrücke aus Textilbeton

Hegger

Goralski

Kulas

2011

Beton und Stahlbetonbau

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In Albstadt‐Lautlingen wurde eine ältere Fußgängerbrücke aus Stahlbeton durch eine elegante Brücke aus Textilbeton ersetzt. Durch die Kombination von textilbewehrtem Beton mit einer Vorspannung ohne Verbund ließ sich eine für Betontragwerke außergewöhnliche Schlankheit erzielen. Die 97 m lange Brücke über die Bundesstraße B 463 besteht aus sechs Fertigteilen, die bei einer Elementlänge von 17,2 m eine Bauhöhe von 43 cm aufweisen. Im Beitrag werden Konstruktion, Bemessung und insbesondere das Schwingungsverhalten beschrieben. Die Untersuchungen zu den verwendeten Baustoffen sowie zum Tragverhalten und zur Dauerhaftigkeit finden sich in einem separaten Beitrag in diesem Heft.A Pedestrian Bridge Made of Textile Reinforced ConcreteThe pedestrian bridge over a state road in Albstadt, Germany, had to be torn down due to immense corrosion damages of the steel reinforcement and was replaced by a new bridge. The design of the new bridge allows a slender and durable construction with high demands on the concrete surface. The bridge with a total length of 97 m is subdivided in six prefabricated parts with a maximum element length of 17,2 m and a span of Ls = 15 m. The height of only 43 cm is possible by using the innovative composite material textile reinforced concrete. Thus, a slenderness of Ls/H = 35 and an extreme slender bridge construction is achieved. Due to the non‐corrosive textile reinforcement a very small concrete cover is possible and, thus, webs and cantilever arms can be designed very thin. The paper describes the construction, design and dynamic behaviour. A report on materials, load bearing behaviour and on the durability is available as a separate paper in this issue.

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“…In Bild 7 ist die Querschnittsausnutzung beispielhaft für das südliche Endfeld dargestellt. Die Bemessung des Textilbetonquerschnitts erfolgte nach [5] auf Basis der in [6,7] …”

Section: Querschnittstragfähigkeitunclassified

Schlanke Fußgängerbrücke aus Textilbeton

Hegger

Goralski

Kulas

2011

Beton und Stahlbetonbau

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“…CaLo1 was the only carbon-TRM-strengthened specimen that experienced textile rupture. Textiles are vulnerable to damage owing to exposure to the outside surface where cracks occur [11]. In other words, CaLo1 was vulnerable to damage because its textile reinforcement ratio was minimum compared to those of other carbon-TRM-strengthened specimens.…”

Section: Experiments Results and Discussionmentioning

confidence: 99%

“…Uniaxial tensile tests were conducted to understand the behavior of TRM composites. The detailed behavior of TRM was identified [9,10] and a modeling technique was proposed [11]. The bond behavior between TRM and the concrete substrate is also important in determining the performance of TRM-strengthened RC beam.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Flexural Behavior of Reinforced Concrete Beam Strengthened with Prestressed Textile-Reinforced Mortar

Park

Hong

2020

Materials

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In this study, nine specimens were experimentally tested to analyze the strengthening efficiency of textile-reinforced mortar (TRM) and the difference in flexural behavior between prestressed and non-prestressed TRM-strengthened reinforced concrete beam. The test results show that TRM strengthening improves the flexural strength of TRM-strengthened reinforced concrete beams with alkali-resistant-(AR-) glass textile as well as that with carbon textile. However, in the case of textile prestressing, the strengthening efficiency for flexural strength of the AR-glass textile was higher than that of the carbon textile. The flexural stiffness of AR-glass textiles increased when prestressing was introduced and the use of carbon textiles can be advantageous to reduce the decreasing ratio of flexural stiffness as the load increased. In the failure mode, textile prestressing prevents the damage of textiles effectively owing to the crack and induces the debonding of the TRM.experimentally study for the bond was conducted and effective anchorage length was derived for fibers/matrix interface [13], and the bond-slip relation was predicted considering the loss of bond between PBO-FRCM system and the concrete substrate [14]. The flexural behavior of the structure which was strengthened with TRM was also investigated [15][16][17][18][19][20][21][22][23][24]. Herbrand et al.[25] applied a carbon textile-reinforced mortar to real bridge. The experimental results indicated increasing the fatigue and ultimate strength of bridge. Koutas et al. [7] reported the state-of-the-art review on the strengthening of concrete structure with TRM including studies for flexural, shear, confinement, and seismic retrofitting.The designing and strengthening of TRM, however, is still difficult because such an uncertainty involves errors that may occur during weaving, material application, and the construction process. Theoretical studies were conducted to predict the flexural strength of TRM-strengthened RC beam [17,18,20,24]. An efficient factor is applied in the designing of strengthening TRM to consider the poor bond between textile and mortar [26,27]. ACI Committee 549 [28] proposes an effective tensile strain to limit the ultimate tensile strain of fabric-reinforced cementitious matrix (FRCM). Flexural strength was predicted according to ACI 549.4R and the results underestimated the experimental results [19,29].A method of manually stretching the textile or fixing both sides of the textile was adopted during the construction stage to reduce this uncertainty regarding TRM strengthening [15,27]. The method of stretching and fixing the textiles has the advantages of preventing the local bending of the textiles, which can occur when the textiles are placed on the mortar, and accurately maintaining the reinforced axis [27,30]. This method, however, has a disadvantage: the axial load applied to the textile is not constant. Consequently, some researchers analyzed the performance of a structure by introducing a prestress to the textile [31][32][33][34][...

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“…Further developments and applications are conducted in the priority programme 1542 funded by the German Research Foundation . In various projects, TRC has been investigated closely, for example, References .…”

Section: Methodsmentioning

confidence: 99%

Innovative design concepts: Application of textile reinforced concrete to shell structures

Hegger

Curbach

Stark

et al. 2017

Structural Concrete

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Today's challenges comprise climate change, urbanization, and demographic change. The building industry is of major technical and economic importance for these subjects. Due to the versatility, structural concrete is the major applied material in building industry. The associated cement production contributes significantly to the CO2 emissions. Hence, new technologies and planning methods as well as production and recycling techniques have to be developed to account for a fast changing world and to reduce the carbon footprint. High‐performance materials, such as textile reinforced concrete, in combination with new construction methods and conceptual designs, can reduce the material usage significantly. In this paper, new construction methods as well as conceptual designs are proposed, which result in economic structural members.

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Load–bearing behaviour and simulation of textile reinforced concrete

Cited by 215 publications

References 1 publication

Schlanke Fußgängerbrücke aus Textilbeton

Schlanke Fußgängerbrücke aus Textilbeton

Experimental Study of Flexural Behavior of Reinforced Concrete Beam Strengthened with Prestressed Textile-Reinforced Mortar

Innovative design concepts: Application of textile reinforced concrete to shell structures

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