Flexural Strengthening of RC Structures with TRC—Experimental Observations, Design Approach and Application

Bestehende Stahlbetonkonstruktionen können mit einer Vielzahl an Systemen instand gesetzt bzw. verstärkt werden, wobei zu den gebräuchlichsten Methoden eine Verstärkung mit Spritzbeton oder mit Lamellen aus faserverstärkten Kunstoffen (FVK) gehört. In den vergangenen Jahren hat sich mit Textilbeton eine weitere Möglichkeit entwickelt, bei der es sich um eine dünne, leistungsfähige Verstärkungsschicht aus einem Feinbeton handelt, welche mit einem textilen Gelege bewehrt ist. Die Dicke einer solchen Schicht beträgt üblicherweise zwischen 10 und 20 mm, kann letztlich jedoch je nach geforderten Randbedingungen davon abweichen. Als Material für diese Gelege kommen verschiedene technische Endlosfasern z. B. aus alkaliresistentem Glas (AR-Glas), Carbon oder Basalt infrage. Carbonbeton (CRC-carbon reinforced concrete) enthält Carbonbewehrung in Form von Gelegen oder Stäben. Allgemeine Informationen zum Baustoff Carbonbeton und dessen Anwendungsfeldern können bspw. [1-4] entnommen werden.

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“…B. ). Über die Herleitung von Teilsicherheitsbeiwerten, die in den Bemessungsmodellen unabdingbar sind, wird beispielsweise in berichtet.…”

Section: Motivation Und Zielstellungunclassified

“…Die Momenten‐Durchbiegungs‐Kurven der mit dem GRID Q85/85‐CCE‐21 (solidian) verstärkten Stahlbetonplatten weisen das typische Bauteilverhalten von carbonbetonverstärkten Platten auf, wie es zum Beispiel in oder bereits beschrieben wurde (vgl. blaue Linien in Bild ).…”

Section: Versuchsergebnisseunclassified

Biegeverstärkung mit Carbonbeton

Müller

Schmidt

Schumann³

et al. 2020

Beton und Stahlbetonbau

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“…The results are compared to existing models and design provisions. The feature review paper by Scheerer, Zobel, Müller, Senckpiel-Peters, Schmidt, and Curbach [12] elaborates on design rules for the flexural strengthening of reinforced concrete structures with TRC, and highlights some practical applications.…”

Section: Trc In Structural and Materials Engineeringmentioning

confidence: 99%

Editorial on Special Issue “Textile-Reinforced Cement Composites: New Insights into Structural and Material Engineering”

Tysmans

Wastiels

2020

Applied Sciences

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This special issue presents the latest advances in the field of Textile-Reinforced Cement Composites, including Textile-Reinforced Concrete (TRC), Textile-Reinforced Mortar (TRM), Fabric-Reinforced Cementitious Matrix (FRCM), etc. These composite materials distinguish themselves from other fibre reinforced concrete materials by their strain-hardening behaviour under tensile loading. This Special Issue is composed of 14 papers covering new insights in structural and material engineering. The papers include investigations on the level of the fibre reinforcement system as well as on the level of the composites, investigating their impact and fatigue behaviour, durability and fire behaviour. Both strengthening of existing structures and development of new structural systems such as lightweight sandwich systems are presented, and analysis and design methods are discussed. This Special Issue demonstrates the broadness and intensity of the ongoing advancements in the field of Textile-Reinforced Cement composites and the importance of several future research directions.

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“…TRM composites have become an alternative solution to conventional techniques, such as steel plates, reinforced concrete (RC) overlay, post-tensioning, and even fiber-reinforced polymer systems. Therefore, TRM composites could be widely applied to strengthen, repair, and retrofit existing concrete and masonry structures [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Harsh Conditions on the Tensile Behaviour of Lap-Spliced Carbon Fiber Textile-Reinforced Mortar (TRM) with Different Surface Treatment Methods

2019

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In the present study, the effect of harsh conditions on the tensile behavior of lap-spliced carbon fiber textile-reinforced mortar (TRM) with different surface treatment methods was investigated through the direct tensile test. The TRM coupons were exposed to three different harsh conditions: a chloride environment of 3.5 wt.% sodium chloride, a high temperature and humidity environment (50 °C and 95% relative humidity), and sustained load of 30% of the tensile strength during 60 days. In addition, two different surface treatment methods of the lap-spliced region of TRM coupons were used: carbon fiber textile impregnated by epoxy resin, and carbon fiber textile covered with aluminum oxide (Al2O3) powder after epoxy resin impregnation. The tensile characteristics of TRM coupons were investigated in terms of the cracking strength, ultimate strength, initial stiffness, and ultimate strain, to evaluate the influence of different surface treatment methods on the tensile behaviors of TRM coupons after exposure to various types of harsh conditions. Additionally, the test results were compared to the previous test results of TRM coupons that were not subjected to harsh conditions.

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Flexural Strengthening of RC Structures with TRC—Experimental Observations, Design Approach and Application

Cited by 38 publications

References 26 publications

Biegeverstärkung mit Carbonbeton

Biegeverstärkung mit Carbonbeton

Editorial on Special Issue “Textile-Reinforced Cement Composites: New Insights into Structural and Material Engineering”

Effect of Harsh Conditions on the Tensile Behaviour of Lap-Spliced Carbon Fiber Textile-Reinforced Mortar (TRM) with Different Surface Treatment Methods

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