Sisal textile reinforced concrete: Improving tensile strength and bonding through peeling and nano-silica treatment

2021 ◽  
Vol 301 ◽  
pp. 124300
Author(s):  
Dimas Alan Strauss Rambo ◽  
Caroline Umbinger de Oliveira ◽  
Renan Pícolo Salvador ◽  
Romildo Dias Toledo Filho ◽  
Otávio da Fonseca Martins Gomes ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Nano Silica ◽  
Textile Reinforced Concrete ◽  
Silica Treatment

scholarly journals Determination of the Material Properties of the Reinforcement for Textile-Reinforced Concrete Elements

2021 ◽  
Author(s):  
Sergej Rempel ◽  
Marcus Ricker ◽  
Tânia Feiri
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Tensile Test ◽  
Material Properties ◽  
Construction Material ◽  
Gumbel Distribution ◽  
Mean Value ◽  
Elastic Behaviour ◽  
Textile Reinforced Concrete ◽  
Design Values

Abstract Textile-reinforced concrete has emerged in recent years as a new and valuable construction material. The design of textile-reinforced concrete requires knowledge on the mechanical properties of different textile types as well as their reinforcing behaviour under different loading conditions. Conventional load-bearing tests tend to be complex, time-consuming, costly and can even lack consistent specifications. To mitigate such drawbacks, a standardised tensile test for fibre strands was developed aiming at characterising the material properties needed for the design of a textile-reinforced concrete component. For the sake of this study, an epoxy resin-soaked AR-glass reinforcement was considered. The standardised tensile test uses a fibre strand with 160 mm length, which shall be cut out of a textile grid. The results show that the textile reinforcement has a linear-elastic behaviour, and the ultimate tensile strength can be statistically modelled by a Gumbel distribution. Furthermore, the results indicate that the modulus of elasticity is not influenced by the length or the number of fibre strands. Therefore, the mean value from the standardised test can be used for the design purpose. These findings are essential to derive an appropriate partial safety factor for the calculation of the design values of the tensile strength and can be used to determine the failure probability of textile-reinforced concrete components.

Production and Use of the Textile Reinforced Concrete

2014 ◽  
Vol 982 ◽  
pp. 59-62 ◽  
Author(s):  
Filip Vogel
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
High Strength ◽  
Cement Matrix ◽  
High Tensile Strength ◽  
Textile Reinforced Concrete ◽  
Corrosion Resistant ◽  
New Material ◽  
Ductile Behavior

This article discusses about the textile reinforced concrete. The textile reinforced concrete is a new material with great possibilities for modern construction. The textile reinforced concrete consists of cement matrix and textile reinforcement of high strength fibers. This combination of cement matrix and textile reinforcement is an innovative combination of materials for use in the construction. The main advantage of the textile reinforced concrete is a high tensile strength and ductile behavior. The textile reinforced concrete is corrosion resistant. With these mechanical properties can be used textile reinforced concrete in modern construction.

Prüfverfahren zur Ermittlung des Krümmungseinflusses auf die Zugfestigkeit von Textilbeton/Test method for the determination of curvature-dependent effects on the tensile strength of textile reinforced concrete

Bauingenieur ◽  
2018 ◽  
Vol 93 (11) ◽  
pp. 454-462
Author(s):  
D. Meßerer ◽  
B. Heiden ◽  
J. Bielak ◽  
K. Holschemacher
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Test Method ◽  
Textile Reinforced Concrete

Der Verbundwerkstoff Textilbeton wird neben der Verwendung für Neubauteile überwiegend zur Verstärkung von Stahlbetonbauteilen eingesetzt. Die Verstärkung von flächigen Bauteilen mit Textilbeton war und ist bereits Gegenstand aktueller Forschungen, die unter anderem zu einem bauaufsichtlich zugelassenen System für diesen Anwendungsfall führten. Beim Einsatz von Textilbeton in gekrümmten Bereichen, wie bei der Umschnürung von stabförmigen Druckgliedern oder der nachträglichen Querkraftverstärkung von Balken, besteht jedoch noch erheblicher Forschungsbedarf. Insbesondere die Auswirkungen der durch die Krümmung entstehenden Einflüsse aus Querdruck, Abknicken der Faserstränge durch kleine Umlenkradien und lokal auftretender Spannungsspitzen an Rissufern sind bisher nicht quantifizierbar und können bei der Bemessung nicht ausreichend berücksichtigt werden. Die Verwendung eines Prüfverfahrens zur Ermittlung des Krümmungseinflusses auf Verstärkungsschichten aus Textilbeton ermöglicht eine differenziertere Betrachtung der festigkeitsmindernden Einflüsse. Die Ergebnisse der durchgeführten Validierungsversuche bestätigen die Relevanz des vorgestellten Prüfverfahrens und ermöglichen die Darstellung der krümmungsabhängigen Festigkeitsminderung für das geprüfte Verstärkungssystem. Zudem lässt sich feststellen, dass besonders bei kleinen Umlenkradien eine höhere Festigkeitsminderung vorliegt, die bisher keine Berücksichtigung fand.

scholarly journals Stochastic approach for the material properties of reinforcing textiles for the design of concrete members

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sergej Rempel ◽  
Marcus Ricker ◽  
Tânia Feiri
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Tensile Test ◽  
Material Properties ◽  
Construction Material ◽  
Gumbel Distribution ◽  
Stochastic Approach ◽  
Elastic Behaviour ◽  
Textile Reinforced Concrete ◽  
Concrete Members

AbstractTextile-reinforced concrete has emerged in recent years as a new and valuable construction material. The design of textile-reinforced concrete requires knowledge on the mechanical properties of different textile types as well as their reinforcing behaviour under different loading conditions. Conventional load-bearing tests tend to be complex, time-consuming, costly and can even lack consistent specifications. To mitigate such drawbacks, a standardised tensile test for fibre strands was used to characterise the material properties needed for the design of a textile-reinforced concrete member. The standardised tensile test uses a fibre strand with 160 mm length, which is cut out of a textile grid. For the sake of this study, an epoxy resin-soaked AR-glass reinforcement was considered. The results show that the textile reinforcement has a linear-elastic behaviour, and the ultimate tensile strength can be statistically modelled by a Gumbel distribution. Furthermore, the results indicate that the modulus of elasticity is not influenced by the length or the number of fibre strands. Therefore, the mean value attained from the standardised test can be used for design purposes. These findings are essential to derive an appropriate partial safety factor for the calculation of the design values of the tensile strength and can be used to determine the failure probability of textile-reinforced concrete members.

The Experimental Determination of One-Axial Tensile Strength of the Textile Reinforced Concrete

2016 ◽  
Vol 827 ◽  
pp. 271-274
Author(s):  
Filip Vogel ◽  
Jan Machovec ◽  
Petr Konvalinka
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Experimental Testing ◽  
Testing Machine ◽  
Experimental Tests ◽  
Experimental Program ◽  
Cement Matrix ◽  
Textile Reinforced Concrete ◽  
Axial Tensile ◽  
Special Attachment

This article deals with experimental testing of the textile reinforced concrete samples. The main topic of this article is determination ultimate tensile strength of the textile reinforced concrete. The testing samples were in form “dogbone” for good fixing in testing machine. There are 12 samples totally in experimental program. One type cement matrix and three types (difference in their weight 125 g/m2, 275 g/m2 and 500 g/m2) glass textile reinforcement were used for the production of samples. The textile reinforcement is made of alkali-resistant glass fibres. Three samples were made of cement matrix and nine samples were made of cement matrix reinforced textile reinforcement (three of each type of reinforcement). The samples were tested in special attachment in one-axial tensile. Experimental tests were controlled by speed of rate of deformation (0.0005 m/min). The textile reinforcement has very good influence to behaviour of the textile reinforced concrete in tensile stress.

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

2021 ◽  
Vol 7 (6) ◽  
pp. 1084-1097
Author(s):  
Dang Quang Ngo ◽  
Huy Cuong Nguyen
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Three Dimensional ◽  
Concrete Slabs ◽  
High Tensile Strength ◽  
Flexural Behaviour ◽  
Textile Reinforced Concrete ◽  
Prestressing Steel ◽  
Reinforced Concrete Slabs ◽  
Three Dimensional Finite Element

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

scholarly journals INFLUENCE OF AGGRESSIVE ENVIRONMENT ON THE TENSILE PROPERTIES OF TEXTILE REINFORCED CONCRETE

2018 ◽  
Vol 58 (4) ◽  
pp. 245
Author(s):  
Jan Machovec ◽  
Pavel Reiterman
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Tensile Properties ◽  
High Performance Concrete ◽  
Experimental Program ◽  
Textile Reinforced Concrete ◽  
Practical Utilization ◽  
Freeze Thaw ◽  
Aggressive Environment ◽  
Dog Bone

This article deals with the long-term durability of a relatively new composite – textile reinforced concrete (TRC). The studied composite material introduces a modern and favourite solution in contemporary architecture and structural engineering. It could also be used in renovation and monument restoration due to its high utility properties. The experimental program was focused on the determination of the resistance of the TRC in an aggressive environment using durability accelerated tests. The high performance concrete (HPC), which we used in our study, exhibited a compressive strength exceeding 100MPa after 28 days. Specimens were subjected to a 10% solution of H2SO4, 10% solution of NaOH, and freeze-thaw cycling respectively. All these environments can occur in real conditions in the TRC practical utilization. The testing was carried out on “dog-bone” shaped specimens, specially designed for the tensile strength measurement. Studied TRC specimens were reinforced by textiles of three different square weight that were applied in one or two layers, which led to the expected increase of tensile strength The freeze-thaw cycling had the biggest influence on the tensile properties, because it causes micro-cracks formation. The specimens exposed to the chemically aggressive environment deteriorated mostly on the surface, because of the high density of the concrete and generally low penetration of the media used. The resistance of the studied TRC to the aggressive environment increased with the applied reinforcement rate. The performed experimental programme highlighted the necessity of including the durability properties in the design of structural elements.

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