TY - CHAP A1 - Llano-Torre, Aitor A1 - Cavalaro, Sergio H. P. A1 - Kusterle, Wolfgang A1 - Moro, Sandro A1 - Zerbino, Raúl L. A1 - Gettu, Ravindra A1 - Pauwels, Hans A1 - Nishiwaki, Tomoya A1 - Parmentier, Benoît A1 - Buratti, Nicola A1 - Toledo Filho, Romildo D. A1 - Charron, Jean-Philippe A1 - Larive, Catherine A1 - Boshoff, William P. A1 - Bernard, E. Stefan A1 - Kompatscher, Michael T1 - Equipment and Procedure Description T2 - Round-Robin Test on Creep Behaviour in Cracked Sections of FRC: Experimental Program, Results and Database Analysis : State-of-the-Art Report of the RILEM TC 261-CCF N2 - This chapter collects the description of the main creep testing procedures in fibre-reinforced concrete (FRC) as well as the equipment used by each participant laboratory in the round-robin test (RRT). The description of each procedure was directly provided by the participants and follows the same structure for each participant where institution identification and contact information was included. Each participant summarised the most significant data such as specimen’s size, load configuration, parameters or environmental conditions in a quite useful table. Moreover, the participants included description and close-up pictures of the creep frames construction, the support boundary conditions, and the measurement devices used. Finally, the participants provided a complete description of the specific complete creep test procedure followed. Y1 - 2021 SN - 978-3-030-72736-9 SN - 978-3-030-72735-2 SN - 978-3-030-72738-3 U6 - https://doi.org/10.1007/978-3-030-72736-9_5 SN - 2213-2031 SN - 2213-204X SP - 47 EP - 117 PB - Springer CY - Cham ER - TY - CHAP A1 - Kusterle, Wolfgang T1 - Spritzbetonforschung für dauerhaftere und nachhaltigere Tunnels T2 - 4. Grazer Betonkolloquium (Beton Graz '18), 20.-21.09.2018 Y1 - 2018 ER - TY - JOUR A1 - Galan, Isabel A1 - Baldermann, Andre A1 - Kusterle, Wolfgang A1 - Dietzel, Martin A1 - Mittermayr, Florian T1 - Durability of shotcrete for underground support BT - Review and update JF - Construction and building materials N2 - Shotcrete is often used for the construction and stabilization of tunnels and other underground structures, where it is susceptible to different forms of physical and chemical attacks affecting its durability. An advanced understanding of the factors that limit the durability of shotcrete is crucial to develop tailored strategies for enhancing its service life. The main focus of this contribution is to shed light on the durability of shotcrete by revising the literature, highlighting what is missing and needs to be addressed, assessing how the knowledge about concrete durability can be transferred to shotcrete, and providing recommendations for durable shotcrete structures. (C) 2018 Elsevier Ltd. All rights reserved. KW - CEMENT-BASED MATERIALS KW - CHEMOMECHANICAL COUPLING BEHAVIOR KW - Corrosion KW - Durability KW - FREEZE-THAW RESISTANCE KW - INDUCED CONCRETE CORROSION KW - Leaching KW - LEACHING BEHAVIOR KW - POLYPROPYLENE FIBERS KW - PORTLAND-CEMENT KW - POTENTIAL ALKALI-REACTIVITY KW - Shotcrete KW - Sintering KW - Sprayed concrete KW - Sulfate attack KW - THAUMASITE SULFATE ATTACK KW - Tunnel KW - Underground Y1 - 2019 U6 - https://doi.org/10.1016/j.conbuildmat.2018.12.151 VL - 202 IS - March SP - 465 EP - 493 PB - Elsevier ER - TY - JOUR A1 - Testor, Markus A1 - Kusterle, Wolfgang T1 - Ermittlung der Spritzbetondruckfestigkeiten - Modifiziertes Setzbolzenverfahren und Abhängigkeit der Druckfestigkeit von der Probekörpergeometrie. JF - Zement + Beton Y1 - 1998 SN - 0514-2946 VL - 98 IS - 3 SP - 20 EP - 23 PB - Zement und Beton Handels- und Werbeges. CY - Wien ER - TY - CHAP A1 - Parić, I. A1 - Kusterle, Wolfgang ED - Azenha, Miguel ED - Schlicke, Dirk ED - Benboudjema, Farid ED - Jędrzejewska, Agnieszka T1 - Investigation, assessment and realtime readjustment of the rheological properties of SCC T2 - SynerCrete'18 : Interdisciplinary Approaches for Cement-based Materials and Structural Concrete : Synergizing Expertise and Bridging Scales of Space and Time 24.-26. Oktober 2018, Funchal, Madeira Island, Portugal N2 - This paper discusses a new fresh concrete control system with the following structure: a rheometer measures the fresh concrete directly after the mixing process, during a short break. The viscosity and the dynamic yield point are determined by a ball rheometer. The rheological parameters viscosity and dynamic yield point describe the consistency and thus the pouring ability and consequently the quality of Self Compacting Concrete (SCC). Data collected from the measurement are the basis for an expert system which will help to readjust mixes with deviating rheology. Firstly, investigations were carried out during the development of different SCC mixtures in the COST TU 1404 Action. Secondly, investigations were done in two precast plants. A ball rheometer was installed in the respective mixers. The SCC for premium precast products was tested then during ongoing production. In addition, several test series were carried out in the laboratory of the OTH with the respective constitutive materials. During the test series, the mix designs of the well working SCC’s were modified by using a deviating water content. Subsequently, using the rheological data, water, superplasticizer or stabilizing agents were added to the mix, trying to reach proper workability again. The graphs for the changing rheological properties as a function of the respective amount of start water content and additional water dosage or admixture dosage were generated and analyzed for the mixes of the two precast plants. With this information and experience, an expert system for the mix readjustment is currently under development. Y1 - 2019 SN - 978-2-35158-202-2 SP - 255 EP - 260 ER - TY - JOUR A1 - Steindl, Florian Roman A1 - Sakoparnig, Marlene A1 - Briendl, Lukas G. A1 - Thumann, Maria A1 - Galan, Isabel A1 - Juhart, Joachim A1 - Röck, Rudolf A1 - Saxer, Andreas A1 - Mittermayr, Florian A1 - Kusterle, Wolfgang T1 - ASSpC – Vier Jahre Forschung für dauerhaften Spritzbeton JF - Bautechnik Y1 - 2020 PB - Wilhelm Ernst & Sohn CY - Berlin ER - TY - JOUR A1 - Thumann, Maria A1 - Christlmeier, Peter A1 - Hartmeier, Michael A1 - Kusterle, Wolfgang T1 - Reduzierung von versinterungsbedingten Reinigungsarbeiten in Tunneldränagen durch Optimierung der Spritzbetonrezeptur JF - Beton N2 - Die Drainageleitungen in nicht druckwasserhaltenden Tunnelbauwerken haben die Aufgabe, anfallendes Bergwasser zu sammeln und aus dem Bauwerk zu führen. In den Leitungen treten häufig Kalkablagerungen, so genannte Versinterungen auf, die zu einem Teil- oder Vollverschluss der Rohre führen können und die Ableitung des Bergwassers be- bzw. verhindern. Zur Vermeidung von Schäden am Tunnelbauwerk sind regelmäßige und aufwendige Unterhaltsarbeiten notwendig. Ein wichtiger Einflussfaktor bei der Entstehung von Versinterungen ist der Kontakt des Bergwassers mit zementgebundenen Baustoffen, wie z. B. mit Spritzbeton. Aus dem Spritzbeton kann Calciumhydroxid ausgelaugt werden, das für den Korrosionsschutz der Bewehrung erforderlich ist, aber die Entstehung von Versinterungen begünstigen kann. Im Rahmen eines Forschungsprojekts wurden zahlreiche Mischungszusammensetzungen auf ihr Auslaugverhalten untersucht und Spritzbetonzusammensetzungen mit einem möglichst geringen Versinterungspotenzial entwickelt. KW - Auslaugung KW - Spritzbeton KW - Tunnelbau Y1 - 2019 VL - 68 IS - 11 SP - 416 EP - 421 PB - VERLAG BAU + TECHNIK ER - TY - JOUR A1 - Ding, Yining A1 - Kusterle, Wolfgang T1 - Bemessungsmodell für Stahlfaserbeton JF - Beton- und Stahlbetonbau N2 - Die Bemessungsrichtlinien für Stahlfaserbeton folgen je nach Land unterschiedlichen Ansätzen. Generell kann festgehalten werden, daß das Niveau dieser Bemessungsrichtlinien i. d. R. nicht mit den entsprechenden Normen für Stahlbeton vergleichbar ist. Die Richtlinien erreichen oft nur den Stand von Empfehlungen. Da die Bemessungstheorie des Stahlfaserbetons weit hinter der praktischen Anwendung zurückliegt, bedeutet dies in der Praxis, daß der Stahlfaserbeton oft nur für Bauteile, deren Tragfähigkeit als untergeordnet betrachtet wird, zum Einsatz kommt. Eine gute Bemessungsgrundlage für Faserbetone findet sich im DBV-Merkblatt "Bemessungsgrundlagen für Stahlfaserbeton im Tunnelbau". Für die praktische Anwendung ist sie jedoch etwas zu kompliziert. Der Beitrag stellt ein neues Bemessungsmodell vor, das auf den Ergebnissen zahlreicher Biegezugversuche beruht, die für den verwendeten Stahlfasertyp statistisch ausgewertet wurden. KW - Stahlfaserbeton KW - Bemessung KW - Rißbildung KW - Biegezugfestigkeit Y1 - 2000 U6 - https://doi.org/10.1002/best.200000390 SN - 1437-1006 VL - 95 IS - 4 SP - 225 EP - 231 PB - Ernst & Sohn ER - TY - JOUR A1 - Keller, Helena A1 - Greim, Markus A1 - Kusterle, Wolfgang T1 - 27th Conference and Workshop on Rheology of Building Materials, Ostbayerische Technische Hochschule (OTH) Regensburg, Germany, March 7 – 8, 2018 BT - Conference report JF - Applied Rheology Y1 - 2018 U6 - https://doi.org/10.1515/arh-2018-0005 VL - 28 IS - 2 SP - 56 EP - 58 PB - De Gruyter ER - TY - JOUR A1 - Greim, Markus A1 - Kusterle, Wolfgang T1 - 23rd Conference and Workshop Rheology of Building Materials. Ostbayerische Technische Hochschule Regensburg, Germany March 12–13, 2014 JF - Applied Rheology Y1 - 2014 U6 - https://doi.org/10.3933/ApplRheol-24-3-61 VL - 24 IS - 3 SP - 61 EP - 62 PB - Kerschensteiner ER - TY - CHAP A1 - Kusterle, Wolfgang A1 - Thumann, Maria ED - Beck, Thomas ED - Myren, Synnøve A. ED - Engen, Siri T1 - Pumpability of wet mixsprayed concrete with reduced clinker content T2 - 8th International Symposium on Sprayed Concrete : Modern Use of Wet Mix Sprayed Concrete for Underground Support, 11.- 14.06.2018, Trondheim, Norwegen N2 - The research project „Advanced and Sustainable Shotcrete - ASSpC“ aims at the improvement of sprayed concrete mix design regarding durability and sustainability. One possible improvement is to replace part of the clinker content in the binder with different supplementary cementitious materials. It is crucial that new mix designs fulfil the basic technical requirements on site concerning workability and early age development, too. One central issue of the project is to investigate which parameters influence the pumpability of sprayed concrete. Several test methods are used to determine the stability, tendency to segregation, bleeding and of course the consistency of concrete. An essential test method is a concrete sliding pipe rheometer (Sliper). This rheometer determines the pumping characteristics of concrete in the laboratory and on construction site. In comparison to other rheometers, the Sliper evaluates the rheological characteristics of the thin layer of paste which is lubricating the wall of the convey ing pipe. The paper presents the tests procedures in detail as well as first results from lab-tests and from site-tests with different advanced shotcrete mix-designs . Y1 - 2018 UR - https://betong.net/wp-content/uploads/8th-Sprayed-Concrete_Web-Proceedings.pdf SN - 978-82-8208-060-6 ER - TY - CHAP A1 - Petscharnig, Florian A1 - Kusterle, Wolfgang T1 - Die neue öbv-Richtlinie - Schutzschichten für den erhöhten Brandschutz für unterirdische Verkehrsbauwerke T2 - Spritzbeton-Tagung, 11.-12.01.2018 Alpbach, Tirol T2 - THE NEW AUSTRAIN GUIDELINE ON FIRE-PROTECTIVE LAYERS FOR INCREASED PROTECTION OF SUBSURFACE TRAFFIC CONSTRUCTIONS Y1 - 2018 UR - http://www.spritzbeton-tagung.com/downloads/vortraege/2018/25_Petscharnig_Kusterle_oebv-Richtlinie_Brandschutzschichten.pdf SP - 1 EP - 13 ER - TY - CHAP A1 - Paric, Ivan A1 - Greim, Markus A1 - Erhardt, Markus A1 - Weißmann, Horst A1 - Kusterle, Wolfgang ED - Kusterle, Wolfgang ED - Teubert, Oliver ED - Greim, Markus T1 - Untersuchung, Beurteilung und zeitnahe Aussteuerung der rheologischen Frischbetoneigenschaften von SVB T2 - Rheologische Messungen an Baustoffen 2018. Tagungsband zum 27. Workshop und Kolloquium, 7. und 8. März an der OTH Regensburg KW - Beton KW - Rheologische Eigenschaft Y1 - 2018 SN - 978-3-7469-1878-5 IS - 1. Auflage SP - 154 EP - 168 PB - tredition CY - Hamburg ER -