TY - RPRT A1 - Beneken, Gerd A1 - Dih, Denise A1 - Fried, Adrian A1 - Hauch, Julia A1 - Hummel, Sabine A1 - Junker, Elmar A1 - Karlinger, Peter A1 - Köster, Heinrich A1 - Krause, Harald A1 - Muscat, Dirk A1 - Niedermaier, Peter A1 - Schäfle, Claudia A1 - Schutter, Sabina A1 - Sigrüner, Michael A1 - Stanzel, Silke A1 - Strübbe, Nicole A1 - Werndl, Peter A1 - Wirnsberger, Markus A1 - Zentgraf, Peter T1 - Jahresbericht 2018, Forschung - Entwicklung - Innovation N2 - Mit dem jährlich erscheinenden Forschungsbericht möchte die Technische Hochschule Rosenheim einen Einblick in ihre vielfältigen Projekte und Aktivitäten der angewandten Forschung und Entwicklung geben. Im Jahresbericht 2018 wird über Vorhaben im Jahr 2018 berichtet. T3 - Schriftenreihen - Forschungsbericht - 7 KW - Forschung Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:861-opus4-12374 ER - TY - RPRT A1 - Alversammer, Wolfgang A1 - Angermeier, Martin A1 - Bernhardt, Andreas A1 - Bischof, Wolfgang A1 - Botsch, Rafael A1 - Eierle, Benno A1 - Feldmeier, Franz A1 - Hack, Andreas A1 - Hauck-Bauer, Eva A1 - Heigl, Martin A1 - Kölzer, Brigitte A1 - Köster, Heinrich A1 - Krose, Eva A1 - Leps, Torsten A1 - Mennicken, Titus A1 - Muscat, Dirk A1 - Ober, Thorsten A1 - Ott, Robert A1 - Ruminski, Nils A1 - Seidlmeier, Heinrich A1 - Stauss, Kilian A1 - Stetter, Andrea A1 - Viehhauser, Peter A1 - Wambsganß, Mathias A1 - Zagler, Stefan A1 - Zauner, Johannes A1 - Zentgraf, Peter T1 - Forschungsbericht 2012 N2 - Mit dem jährlich erscheinenden Forschungsbericht möchte die Hochschule Rosenheim einen Einblick in ihre vielfältigen Projekte und Aktivitäten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2012 wird über Vorhaben im Jahr 2012 berichtet. T3 - Schriftenreihen - Forschungsbericht - 1 KW - Forschung Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:861-opus4-12338 ER - TY - CHAP A1 - Herz, Jonas A1 - Sigrüner, Michael A1 - Muscat, Dirk A1 - Strübbe, Nicole T1 - Co-extruded polymer fibers for concrete reinforcement T2 - Proceedings of the 37th International Conference of the Polymer Processing Society (PPS-37) N2 - Corrosion of steel reinforcements in concrete constructions is a big topic for the building industry. Polymeric materials are a possible alternative due to their ability to withstand corrosion. To replace steel reinforcements, fibers with high mechanical properties and a good bonding ability between fiber and concrete are needed. Today different approaches for concrete reinforcement by polymer fibers have been investigated. The bonding ability of the fibers can be increased by mechanical anchoring, e.g. crimped or embossed fibers, as well as by a chemical bonding between concrete and fiber surface. To realize the requirements of high mechanical properties and a good bonding behavior, a fiber that is drawn from a co-extruded filament shall be produced and tested. The filament owns an innovative core-shell-structure. The core maintains the fiber-stiffness and the tensile strength while the shell allows using another material to affect the bonding behavior of the fiber. This study shows the usage of fibers with differing shell materials to examine their influence on the mechanical properties of the fiber in total and the adhesion abilities to concrete. As core material, an unfilled polypropylene (PP) is used. The shell materials are varied using different polymers e.g. polypropylene or ethylene acrylic acid copolymer, as well as two PP based compounds filled with wood particles and calcium carbonate blended with a maleic anhydride based coupling agent. The mechanical properties of the fibers are tested by fiber tensile tests to compare the younǵs modulus and the tensile strength. The influence of the shell phase on the bonding ability to concrete is evaluated by the interfacial shear strength calculated from single fiber pull-out tests. Microscopy is used to interpret changes before and after pull-out. The results depict incredible positive effects and allow new insights in possible materials for fiber reinforced concrete constructions. KW - polymer fibers KW - concrete reinforcement KW - coextrusion KW - core shell fiber Y1 - 2023 U6 - https://doi.org/10.1063/5.0168511 VL - 2884 IS - 1 ER - TY - JOUR A1 - Herz, Jonas A1 - Muscat, Dirk A1 - Strübbe, Nicole T1 - The Influence of Fillers on the Reinforcement Capabilities of Polypropylene Based Mono-Material and Core-Shell Fibers in Concrete, a Comparison JF - Polymers N2 - Noncorrosive concrete reinforcement, such as polymer fibers, is needed to overcome the current issues caused by corroded steel reinforcements. Fibers made of polypropylene show a low bonding behavior in concrete. Fillers can help to overcome this issue but often lead to reduced mechanical properties. Core-shell fibers, which split the mechanical properties and the bonding behavior between the core and the shell component, could be a solution. This study investigates mono-material and core-shell fibers produced with calcium carbonate and bentonite fillers and compares their behavior in tensile tests, density measurements, contact angle measurements, topography measurements, single fiber pull-out tests, reflected light microscopy, and thermogravimetric analysis. The fillers caused an increased drawability, resulting in higher mechanical properties. Further, in the core-shell fibers, the calcium carbonate increased the surface roughness, which led to a better anchoring of the fiber in concrete, which was also visible in the deformation during pull-out observed in reflected light microscopy pictures. The thermogravimetric analysis showed a delay in onset of degradation for fibers containing bentonite. KW - fibers KW - extrusion KW - coextrusion KW - polymer drawing KW - polypropylene KW - calcium carbonate KW - bentonite KW - core-shell KW - mono-material KW - concrete Y1 - 2025 U6 - https://doi.org/10.3390/polym17131781 VL - 17 IS - 13 PB - MDPI CY - Basel ER - TY - GEN A1 - Strübbe, Nicole A1 - Muscat, Dirk A1 - Zenz, Vitus ED - European Patent Office, T1 - DEVICE FOR THE PRODUCTION OF BIOPOLYMERS FROM BIOMASS (EP4130532A1) N2 - Pressure lock (10), extruding apparatus (50) for high pressure extrusion, process for producing biopolymers from biomass and use of the extruding apparatus for a process for producing biopolymers from biomass allowing continuous operation of a high pressure process. KW - Pressure KW - Extrusion Y1 - 2023 ER - TY - RPRT A1 - Herz, Jonas A1 - Kazmi, Monis A1 - Strübbe, Nicole A1 - Muscat, Dirk A1 - Schuster, Jens A1 - Hunger, Martin A1 - Lanyi, Franz J. T1 - Holz-Kunststoff-Hybrid-Gewebe/Gelege - Grundlagenuntersuchung zur Entwicklung eines innovativen Holz-Kunststoff-Hybrid-Gewebes/Geleges für den Ersatz von Stahlbewehrungen im Bau (Machbarkeitsstudie) : Schlussbericht zum Verbundvorhaben : Laufzeit: 01.06.2020 bis 28.02.2022 Y1 - 2022 U6 - https://doi.org/10.2314/KXP:1860061346 ER - TY - CHAP A1 - Sigrüner, Michael A1 - Muscat, Dirk A1 - Strübbe, Nicole T1 - Influencing the bonding ability of polypropylene fibers to concrete by blend hydrophilization and reactive functionalization T2 - IUPAC MACRO2020+, 48th World Polymer Congress, 16. - 21. May 2021 KW - polypropylene fibers KW - concrete Y1 - 2021 ER - TY - GEN A1 - Herz, Jonas A1 - Hefenbrock, Sophia A1 - Lorenz, Katharina A1 - Muscat, Dirk A1 - Strübbe, Nicole ED - Ediciones Uniandes, T1 - Polyketone-Polypropylene Core-Shell Fibers for Concrete Reinforcement T2 - Proceedings of the 39th International Conference of the Polymer Processing Society (PPS-39) N2 - Corrosion of the commonly used steel reinforcements weakens the structural strength of concrete. To oppose this issue, concrete reinforcements in the form of polymer fibers are investigated. These polymer fibers need a good bonding ability to concrete and good mechanical properties. This study investigates core-shell fibers produced from polyketone and polypropylene mixed with a compatibilizer. The core-shell fibers were produced by coextrusion and drawing. The fibers were analyzed by tensile tests, a single fiber pull-out test, contact angle measurements, scanning electron microscopy and thermogravimetric analysis. KW - Concrete Reinforcement KW - Core-Shell Fiber KW - Polyketone KW - Polypropylene Y1 - 2024 U6 - https://doi.org/10.51573/Andes.PPS39.GS.FF.1 SP - 167 EP - 177 ER - TY - GEN A1 - Grischa, Günther A1 - Muscat, Dirk T1 - Veröffentlichte Internationale Patentanmeldung WO2012156349A3 BT - VERFAHREN ZUR HERSTELLUNG VON GEGENSTÄNDEN MIT IN GIESSHARZ EINGEGOSSENEN INKLUSIONEN, SOWIE GEGOSSENE GEGENSTÄNDE KW - Giessharz Y1 - 2021 ER - TY - JOUR A1 - Sigrüner, Michael A1 - Muscat, Dirk A1 - Strübbe, Nicole T1 - Investigation on pull‐out behavior and interface critical parameters of polymer fibers embedded in concrete and their correlation with particular fiber properties JF - Journal of Applied Polymer Science N2 - A crucial problem in concrete engineering is the corrosion of steel reinforcements. Polymer fibers as alternative reinforcement material can prevent corrosion; however, high adhesion to concrete and good fiber mechanics are necessary for polymers to be considered as an alternative reinforcement. This study tested different thermoplastic polymer materials to evaluate their level of adhesion to concrete. The adhesion properties of different self‐drawn polymer fibers were analyzed by extracting the fibers from concrete using single fiber pull‐out test (SFPT). To determine the adhesion mechanism, different polymer properties were analyzed and correlated to SFPT. Strong evidence was found that the fibers mechanical properties correlate with SFPT. Roughening the fiber surface increases the SFPT results significantly. While highly polar materials can support the adhesion process, a clear correlation could not be found. This study identifies high stiffness and roughness as the crucial properties of polymer fibers used in concrete engineering. If these factors can be engineered into the fiber, polymer fibers can present an alternative to steel in concrete reinforcement. KW - extrusion KW - fibers KW - mechanical properties KW - surfaces and interfaces KW - thermoplastics Y1 - 2021 UR - https://doi.org/10.1002/app.50745 VL - 138 IS - 28 SP - 50745 ER -