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1	Commingling Yarns for Reinforcement of Concrete Kravaev, Plamen, Janetzko, Steffen, Gries, Thomas, Kang, Bong-Gu, Brameshuber, Wolfgang, Zell, Maike, Hegger, Josef 03 June 2009 (has links) (PDF) Textile reinforced concrete (TRC) is an innovative composite material, which is being intensely and practice-oriented investigated on national and international level. In the last few years this material has gained increasing importance in the field of civil engineering. In the context of the collaborative research project SFB 532 at the RWTH Aachen University, research was carried out to understand and to predict the behaviour of different yarn structures in fine grained concrete. Based on the results, innovative commingling yarns were made of alkali-resistant glass fibres and water soluble PVA. These hybrid yarns have an open structure, which improves the penetration of the textile reinforcement by the concrete matrix. Hence, the load bearing capacity of TRC structural elements was significantly improved. This paper presents a technique for the production of such commingling yarns for concrete applications. The mechanical properties of the new yarns are determined due to tensile stress tests. The bond behaviour of the commingling yarns was investigated by pull-out- and tensile stress tests on TRC-specimens. The results of the different tests are being presented and briefly discussed. commingling hybrid yarns water soluble fibres textile reinforced concrete bonding Commingling Hybridgarn wasserlösliche Faser Textilverstärkter Beton Tragfähigkeit Faser-Matrix-Anbindung ddc:620 rvk:ZI 2000
2	Neue Beschichtungsverfahren für PVA-Zement-Composite in textilbewehrtem Beton Glowania, Micheal, Weichold, Oliver, Hojczyk, Markus, Seide, Gunnar, Gries, Thomas 03 June 2009 (has links) (PDF) Im Rahmen des Transferprojektes T01 „Textilbeschichtung mit hochviskosen Massen“ des Sonderforschungsbereiches 532 (SFB 532) wird die Realisierung und Bewertung eines integrierten Beschichtungskonzeptes zur nachhaltigen Verbesserung der Tragfähigkeit von textilbewehrten Betonbauteilen an der RWTH Aachen University untersucht. Dazu wird eine neue Auftragstechnik für hochviskose Beschichtungsmassen entwickelt, die eine vollständige Penetration von Multifilamentgarnen mit großen Garntitern und einer hohen Anzahl an Filamenten in textilen Gelegen erzielt. Des Weiteren werden aktive Beschichtungsmassen auf der Basis von Polyvinylalkohol-Zement-Compositen, die eine homogene Anbindung aller Einzelfilamente an die Zementmatrix ermöglichen, erforscht. Textilverstärkter Beton Beschichtung Foulard Quetschwalze Simulation Glasfaser Polyvinylalkohol Particle Image Velocimetry textile-reinforced concrete coating foulard squeegee simulation glass fiber polyvinyl alcohol Particle Image Velocimetry
3	Neue Beschichtungsverfahren für PVA-Zement-Composite in textilbewehrtem Beton Glowania, Micheal, Weichold, Oliver, Hojczyk, Markus, Seide, Gunnar, Gries, Thomas 03 June 2009 (has links) Im Rahmen des Transferprojektes T01 „Textilbeschichtung mit hochviskosen Massen“ des Sonderforschungsbereiches 532 (SFB 532) wird die Realisierung und Bewertung eines integrierten Beschichtungskonzeptes zur nachhaltigen Verbesserung der Tragfähigkeit von textilbewehrten Betonbauteilen an der RWTH Aachen University untersucht. Dazu wird eine neue Auftragstechnik für hochviskose Beschichtungsmassen entwickelt, die eine vollständige Penetration von Multifilamentgarnen mit großen Garntitern und einer hohen Anzahl an Filamenten in textilen Gelegen erzielt. Des Weiteren werden aktive Beschichtungsmassen auf der Basis von Polyvinylalkohol-Zement-Compositen, die eine homogene Anbindung aller Einzelfilamente an die Zementmatrix ermöglichen, erforscht.
4	Commingling Yarns for Reinforcement of Concrete Kravaev, Plamen, Janetzko, Steffen, Gries, Thomas, Kang, Bong-Gu, Brameshuber, Wolfgang, Zell, Maike, Hegger, Josef 03 June 2009 (has links) Textile reinforced concrete (TRC) is an innovative composite material, which is being intensely and practice-oriented investigated on national and international level. In the last few years this material has gained increasing importance in the field of civil engineering. In the context of the collaborative research project SFB 532 at the RWTH Aachen University, research was carried out to understand and to predict the behaviour of different yarn structures in fine grained concrete. Based on the results, innovative commingling yarns were made of alkali-resistant glass fibres and water soluble PVA. These hybrid yarns have an open structure, which improves the penetration of the textile reinforcement by the concrete matrix. Hence, the load bearing capacity of TRC structural elements was significantly improved. This paper presents a technique for the production of such commingling yarns for concrete applications. The mechanical properties of the new yarns are determined due to tensile stress tests. The bond behaviour of the commingling yarns was investigated by pull-out- and tensile stress tests on TRC-specimens. The results of the different tests are being presented and briefly discussed. info:eu-repo/classification/ddc/620 ddc:620

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