Permeability of AR-glass fibers roving embedded in cementitious matrix

Dolatabadi, Mehdi Kamali; Janetzko, Steffen; Gries, Thomas; Kang, Bong‐Gu; Sander, Andreas

doi:10.1617/s11527-010-9623-7

Cited by 19 publications

(8 citation statements)

References 4 publications

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“…From 1999 to 2011, textile-reinforced concrete (TRC) was extensively studied at RWTH-Aachen University and Technical University Dresden. 1,2 Because TRC consists of closely spaced textile grid reinforcement structures, it is important to generate a TRC mix design with a very small aggregate size. These matrices meet special demands of the TRC production processes as well as the chemical stability of the used textile reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Comparative low-velocity impact response of textile-reinforced concrete and steel-fiber-reinforced concrete beams

Yoo

Gohil

Gries

et al. 2015

Journal of Composite Materials

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In this study, the effect of the textile reinforcement type on the flexural response of textile-reinforced concrete beams under static and impact loads was investigated. In addition, to compare the flexural capacities with those of conventional steel-fiber-reinforced concrete, steel-fiber-reinforced concrete beams having similar compressive strength with that of textile-reinforced concrete were fabricated and tested according to the fiber content. Enhancements in the flexural capacities were obtained using polymer-coated textile reinforcement, and three-dimensional textile reinforcement resulted in slightly better flexural performance than two-dimensional textile reinforcement under both static and impact loads. Upon comparison with the results obtained from the steel-fiber-reinforced concrete beams, the textilereinforced concrete specimen with polymer-coated textile reinforcement exhibited the best flexural performance in terms of the strength, toughness, and residual load carrying capacity (higher than or at least similar to those of the steel-fiber-reinforced concrete with a fiber volume content of 2%), whereas the textile-reinforced concrete specimens with uncoated textile reinforcement exhibited lower strength and toughness than those of the steel-fiber-reinforced concrete with a fiber volume content of 0.5%. Finally, the strain-rate sensitivity of the flexural strength for textilereinforced concrete was found to be similar to that for steel-fiber-reinforced concrete.

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Section: Introductionmentioning

confidence: 99%

Comparative low-velocity impact response of textile-reinforced concrete and steel-fiber-reinforced concrete beams

Yoo

Gohil

Gries

et al. 2015

Journal of Composite Materials

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“…Darüber hinaus führt die zügige Trocknung frisch zementgetränkter Garne zu einer schnellen Erhöhung der Steifigkeit infolge Reagglomeration der feinkörnigen Zementpartikel. Schließlich können die Garne durch Umwickeln mittels eines Nähfadens stabilisiert werden . Dies führt zusätzlich zum Formschluss in Längsrichtung des Stabes und erhöht schlussendlich auch den Verbund zur Betonmatrix.…”

Section: Ausgangsmaterialen Und Verfahrenunclassified

Neue Carbonfaserbewehrung für digitalen automatisierten Betonbau

Mechtcherine

Michel

Schneider

et al. 2019

Beton und Stahlbetonbau

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Mineralisch gebundene Carbonfaserbewehrung ist eine neue Art der Armierung für den Betonbau, die im Vergleich zu bestehenden, kunststoffgebundenen Carbonbewehrungen beträchtliche Vorteile aufweist. Die mineralische Imprägnierung erhöht die Leistungsfähigkeit der Bewehrung bei erhöhten Temperaturen, verbessert ihren Verbund mit der Betonmatrix und steigert deutlich die technologische Flexibilität, insbesondere im Hinblick auf die Digitalisierung und Automatisierung der Bauteilherstellung. Nach der Erläuterung der Technologie zur kontinuierlichen Imprägnierung von Carbongarnen mit speziell entwickelten, feinen mineralischen Bindemittelsuspensionen werden einige Beispiele für die automatisierte Herstellung von Bewehrungssystemen aus diesem neuen Verbundwerkstoff vorgestellt. Diese Fälle umfassen eindimensionale Elemente wie Stäbe und Lamellen, zweidimensionale Bewehrungen in Form von Matten und dreidimensionale Systeme wie Bewehrungskörbe für einen Balkon oder Schalenstrukturen. Schließlich wird kurz auf die Verwendung des neuartigen Komposits für die Bewehrung in hochautomatisierter additiver Fertigung wie Beton‐3D‐Druck eingegangen.

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“…1 The dimensional stability and strength efficiency may be improved by applying polymer coating to the reinforcing fabrics. 1,4,8,[19][20][21][22][23][24][25][26][27][28][29][30][31] Due to the high viscosity behaviour of the polymer, the impregnated textile is less drapable and thus stiffer to handle and cast using conventional processes. With thermoset polymers, such as epoxy resin, it is possible to produce stiff reinforcing skeletal structures, similar to steel reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Effect of coating type on the mechanical performance of warp-knitted fabrics and cement-based composites

Quadflieg

Leimbrink

Gries

et al. 2018

Journal of Composite Materials

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High-performance textiles are used for reinforcing concrete structural parts. This paper presents a technique for producing coated weft-inserted warp-knitted fabrics for concrete applications. Three types of reinforced fabrics differing in coating type and composed of alkali-resistant-glass rovings resulting in a cement composite matrix were produced. The investigated coatings include potassium silicate, carboxylated styrene butadiene rubber and epoxide. The mechanical properties of the developed fabrics and cement composites were determined according to the coating type. Thereafter, the mechanical performance of the warp-knitted reinforced fabrics was investigated using tensile tests. Finally, the properties of the composites were examined according to the coating type using a four-point bending test. The results of the characterization of the coated weft-inserted warp-knitted reinforced fabrics and cement composites based on them are presented and discussed. It is shown that the coating material has high influence on the composite properties. Samples with potassium silicate showed highest strength at the limit of proportionality, while samples with epoxide showed the highest flexural strength.

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Permeability of AR-glass fibers roving embedded in cementitious matrix

Cited by 19 publications

References 4 publications

Comparative low-velocity impact response of textile-reinforced concrete and steel-fiber-reinforced concrete beams

Comparative low-velocity impact response of textile-reinforced concrete and steel-fiber-reinforced concrete beams

Neue Carbonfaserbewehrung für digitalen automatisierten Betonbau

Effect of coating type on the mechanical performance of warp-knitted fabrics and cement-based composites

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