Precast Slab Structures Made of Carbon Reinforced Concrete

May, Sebastian; Steinbock, Oliver; Michler, Harald; Curbach, Manfred

doi:10.1016/j.istruc.2018.11.005

Cited by 22 publications

(11 citation statements)

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“…During this time various projects with textile reinforcements have been realized [1][2][3][4]. Meanwhile, material parameters for design have been investigated [5][6][7][8], and standardized testing methods have been derived [9,10].…”

Section: Introductionmentioning

confidence: 99%

Long-Term Durability of Carbon-Reinforced Concrete: An Overview and Experimental Investigations

et al. 2019

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Despite intensive research on material properties of non-metallic technical textiles for internal reinforcement in concrete, the long-term durability is not yet fully understood. In this work, results of preloaded long-term durability tensile tests on carbon-reinforced concrete specimens under environmental factors of stress, temperature, moisture and alkalinity are presented. Based on investigations of non-metallic glass fiber reinforcements with polymer matrices, where strength losses occur over time, it was planned to derive a time to failure curve and to determine a reduction factor for the tensile strength of the carbon textile reinforcement. However, no loss of strength was discovered in residual capacity tests due to the high material resistance and therefore no reduction factor due to the environmental factors could be derived. After more than 5000 h of testing, the residual capacity tests showed an increase in the ultimate failure stress in comparison with the short-term tests. In addition to the long term-durability tests, the influence of the preloading was investigated. The preload was applied to the long-term tests and led to a straighter alignment and loading of the filaments and thus to an increase in the ultimate capacity.

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Section: Introductionmentioning

confidence: 99%

Long-Term Durability of Carbon-Reinforced Concrete: An Overview and Experimental Investigations

et al. 2019

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“…in allen Querschnitten gleichmäßig hoch auszunutzen, wurden von Mosig in bzw. durchgeführt und dienten als Grundlage für die Wahl des Vorspanngrads. Als Bemessungsgrundlage wurden eine im Hochbau übliche Nutzlast von 5 kN/m 2 sowie ein gängiger Fußbodenaufbau (Estrich und Fußbodenbelag) angenommen.…”

Section: Umsetzung Des Deckenelementsunclassified

“…Zu guter Letzt bleibt den Verfassern der Wunsch, dass die anwendungsorientierten Forschungsergebnisse des Projekts V4.2 dem vorgespannten Carbonbeton bei der Etablierung in der Praxis verhelfen, vgl. hierzu .…”

Section: Dankunclassified

Vorgespannte Deckenelemente aus Carbonbeton

Steinbock

May

Curbach

2019

Beton und Stahlbetonbau

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Einen Hauptforschungsschwerpunkt von Herrn Prof. Josef Hegger zu benennen, ist bei einer solch langen und erfolgreichen Karriere im Bereich der Bauforschung kaum möglich. Ein ihm gewidmeter Beitrag sollte daher mehrere Forschungsthemen umfassen, um dem Jubilar gerecht zu werden. Nachfolgender Beitrag widmet sich daher sowohl dem Carbonbeton im Neubau als auch dem vorgespannten Beton. Konkret werden die Ergebnisse aus Biegeversuchen an einem werkstoffgerecht und formoptimierten Deckenelement dargestellt, die im Rahmen der Forschungsprojekte C3‐V4.2 „Vorgespannter Carbonbeton für Straßenbrücken und Flächentragwerke“ sowie C3‐V1.5 „Abbruch, Rückbau und Recycling von C3‐Bauteilen“ innerhalb der deutschlandweiten Verbundforschungsinitiative „Carbon Concrete Composite – C3“ durchgeführt wurden.

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“…Due to its non-corrosive textile reinforcement, made of alkali-resistant glass or carbon fibers, a minimum concrete cover is necessary to transfer bond stresses from the reinforcement to the concrete. High strength, ductility, and non-corrosiveness textile reinforcements make TRC very suitable for constructing thin-walled, lightweight shell structures [1]. The weight of textile concrete elements could be reduced by up to 45%, resulting in a reduced need for maternal resources.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on Flexural Behaviour of Prestressed Textile Reinforced Concrete Slabs

Ngo

Nguyen

2021

Civ Eng J

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Nowadays, concrete is mostly prestressed with steel. But the application of prestressing steel is restricted in a highly corrosive environment area due to corrosion of prestressing steel, leading to a reduction in strength and may cause sudden failure. Carbon textile is considered an alternate material due to its corrosive resistance property, high tensile strength, and perfectly elastic. Prestressing is also the only realistic way to utilize fully ultra-high tensile strength in carbon textile material. In this study, experimental and numerical analyses were carried out for the flexural behaviour of prestressed and non-prestressed carbon textile reinforced concrete slabs. This study also focuses on the inﬂuences of textile reinforcement ratios, prestressing grades on the flexural behaviour of carbon textile reinforced concrete (TRC). Fifteen precast TRC slabs were tested, of which six were prestressed to various levels with carbon textile. The obtained results show that prestressing textile reinforcement results in a higher load-bearing capacity, stiffness, and crack resistance for TRC slabs. The ﬁrst-crack load of the prestressed specimens increased by about 85% compared with those of non-prestressed slabs. Three-dimensional finite element models were developed to provide a reliable estimation of global and local response. The modeling techniques accurately reproduced the experimental behaviour. Doi: 10.28991/cej-2021-03091712 Full Text: PDF

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Precast Slab Structures Made of Carbon Reinforced Concrete

Cited by 22 publications

References 1 publication

Long-Term Durability of Carbon-Reinforced Concrete: An Overview and Experimental Investigations

Long-Term Durability of Carbon-Reinforced Concrete: An Overview and Experimental Investigations

Vorgespannte Deckenelemente aus Carbonbeton

Experimental and Numerical Investigations on Flexural Behaviour of Prestressed Textile Reinforced Concrete Slabs

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