The overall motivation of fib Commission 4 (COM4) is to make theoretical and practical developments in the field of concrete and concrete technology, and to present these developments in an understandable and code-type formulated manner. COM4 positions itself at the forefront of new technologies and techniques by considering both fundamental research and practical issues.
Scope and objective of technical work
The aim of COM4 is to collect and to validate information on the properties and behaviour of concrete for structural applications subjected to various types of loading and environmental conditions. The commission focuses its attention both on traditional types of concrete, in particular under unusual conditions, and on new types of concrete and cementitious composites under all types of loading and condition. The properties of the concrete types considered should be formulated in such a way that it is possible to derive behavioural models and design recommendations for practical applications.
|First name||Last name||Country||Affiliation|
|Dehn||Frank||Germany||KIT Karlsruher Institut für Technologie|
|Ferrara||Liberato||Italy||Politecnico di Milano|
|Justnes||Harald||Norway||SINTEF Building and Infrastructure|
|Helland||Steinar||Norway||S Helland Konsult|
|Walraven||Joost||Netherlands||Delft University of Technology|
|Geiker||Mette||Norway||NTNU - Trondheim Norwegian Univ.|
|Mechtcherine||Viktor||Germany||Technical Univ. Dresden|
|Beushausen||Hans-Dieter||South Africa||University of Cape Town|
|Müller||Harald||Germany||SMP Ingenieure im Bauwesen GmbH|
|Grünewald||Steffen||Netherlands||Sustainable Concrete Centre|
|de Schutter||Geert||Belgium||Ghent University|
|Lohaus||Ludger||Germany||Leibniz Universität Hannover|
|Martius-Hammer||Tor Arne||Norway||SINTEF Building and Infrastructure|
TG4.1 - Fibre-reinforced concrete
Fibre concrete is more than 50 years old and the design rules have undergone developments over the years. TG4.1 will make theoretical and practical developments in the field of fibre-reinforced concrete materials technology, rheology and materials characterisation and modelling and to present these developments in code-type formulations.
The task group collects and validates information on the behaviour of fibre-reinforced concrete materials, subjected to various types of loading and environmental conditions.
TG4.1 is currently finalising a bulletin on the background to the design rules in MC2010.
First name Last name Country Affiliation Vandewalle Lucie Belgium KULeuven Fernández-Ordóñez David Switzerland fib Dehn Frank Germany KIT Karlsruher Institut für Technologie Rossi Pierre France IFSTTAR Gettu Ravindra India Indian Institute of Technology Madras Mobasher Barzin United States Arizona State University Plizzari Giovanni Italy University of Brescia Barros Joaquim Portugal Universidade do Minho Balázs György L. Hungary Budapest Univ. of Techn. & Economics di Prisco Marco Italy Politecnico di Milano Dancygier Avraham Israel Technion-Israel Institute of Technology Parra-Montesinos Gustavo United States University of Michigan Löfgren Ingemar United Kingdom - Destree Xavier Belgium - Kusterle Wolfgang Germany OTH Regensburg Falkner Horst Germany Retired Banthia Nemkumar Canada Univ. of British Columbia Soetens Tim Belgium Sanacon
TG4.2 - Ultra high-performance fibre-reinforced concrete
Task Group 4.2 (TG4.2) will make theoretical and practical developments for concretes with strength > 120 N/mm2 in the field of fibre-reinforced concrete materials technology, rheology and materials characterisation and modelling to present these developments in code-type formulations. Work is applicable to concrete with fibres of various types, such as steel, polymeric or combinations thereof.
The work of TG4.2 is coordinated with the work of fib TG4.1 (Fibre-reinforced concrete) that develops recommendations for conventional fibre-reinforced concrete.
First name Last name Country Affiliation Dehn Frank Germany KIT Karlsruher Institut für Technologie Gambarova Pietro Italy Politecnico di Milano Behloul Mouloud France Lafarge Greiner Stefan Germany Bilfinger + Berger AG Simon Alain France Eiffage TP Bunje Kai Germany IBB Fehling & Jungmann GmbH Thibaux Thierry France Eiffage Katagiri Makoto Japan Taiheiyo Cement Corporation Resplendino Jacques France Setec TPI Skazlic Marijan Croatia University of Zagreb Leutbecher Torsten Germany Universität Siegen Aarup Berndt Denmark CRC Technology ApS Graybeal Benjamin United States PSI/FHWA Structures Marchand Pierre France IFSTTAR Frettlöhr Björn Germany - Walraven Joost Netherlands Delft University of Technology Fehling Ekkehard Germany IBB Fehling + Jungmann GmbH Rossi Pierre France IFSTTAR Redaelli Dario Switzerland School of Engineering and Architecture - Fribourg Fernández-Ordóñez David Switzerland fib Denarie Emmanuel Switzerland EPF Lausanne Grünewald Steffen Netherlands Sustainable Concrete Centre Tue Nguyen Viet Austria Technische Universität Graz Sato Yasuhiko Japan Waseda University Reineck Karl-Heinz Germany - Schmidt Michael Germany Fehling + Jungmann GmbH Toutlemonde François France IFSTTAR di Prisco Marco Italy Politecnico di Milano
TG4.3 - Structural design with flowable concrete
Flowable concrete (highly flowable, self-compacting and/or self-levelling) has evolved from a special type to a commonly applied building material. fib Task Group 4.3 (TG4.3) considers three aspects of flowable concrete (FC) for structural design: material properties, production effects and structural boundary conditions. The flow of concrete (initiated by some vibration and/or the weight of concrete) can affect the structural characteristics of hardening or hardened concrete. The mixture composition has to be adjusted and optimised in order to obtain a high flowability. TG4.3 aims at promoting the application of flowable concrete, improving and adapting the concrete design and the production technology and its implementation in guidelines and codes.
First name Last name Country Affiliation Dehn Frank Germany KIT Karlsruher Institut für Technologie Ferrara Liberato Italy Politecnico di Milano Behloul Mouloud France Lafarge Gettu Ravindra India Indian Institute of Technology Madras Obladen Bas Netherlands Strukton Group Billberg Peter Sweden Strängbetong Martinie Laetitia France INSA Roussel Nicolas France IFSTTAR Freytag Bernhard Austria Technische Universität Graz Sonebi Mohamed Ireland Queen’s University Belfast Stähli Patrick Switzerland Concretum Construction Science AG Laranjeira Filipe Spain Univ. Politecnica de Catalunya Bertram Guido Germany Grawe + Bertram Ingenieure Leemann Andreas Switzerland EMPA Taylor Susan Ireland Queen's University Belfast Nunes Sandra Portugal University of Porto Spangenberg On Denmark Technical University of Denmark Fischer Gregor Denmark Technical University of Denmark Walraven Joost Netherlands Delft University of Technology Geiker Mette Norway NTNU - Trondheim Norwegian Univ. Kanstad Terje Norway The Norwegian Univ.of Science & Tech Stang Henrik Denmark University of Denmark Zilch Konrad Germany - Grünewald Steffen Netherlands Sustainable Concrete Centre Schmidt Wolfram Germany BAM - Bundesanstalt für - Materialforschung und -prüfung Cairns John United Kingdom Heriot-Watt University Fernández-Ordóñez David Switzerland fib Barragan Bryan France OCV Chambery International Den Uijl Joop Netherlands - Beitzel Harald Germany Inst. für Bauverfahrens- und Umwelttechnik Sato Yasuhiko Japan Waseda University Vandewalle Lucie Belgium KULeuven Barros Joaquim Portugal Universidade do Minho di Prisco Marco Italy Politecnico di Milano Martius-Hammer Tor Arne Norway SINTEF Building and Infrastructure
TG4.4 - Aesthetics of concrete surfaces
The notion of exposed concrete is subjective and varies according to the viewer. The motivation of fib Task Group 4.4 (TG4.4) is to show possibilities how to categorise and evaluate visible concrete surfaces and how to point out technical factors of influence.
TG4.4 will formulate a state-of-the-art technical report on how exposed concrete is defined and built. The final aim is to create a generally accepted recommendation or guidelines for exposed concrete with a homogenous appearance. This generally accepted recommendation or guidelines will be characterised by classifying exposed concrete in different categories. The limit of its objective performance will be considered as well as the consequences on the effort on-site and the planning of structural framework.
First name Last name Country Affiliation Dehn Frank Germany KIT Karlsruher Institut für Technologie Østnor Tone Anita Norway SINTEF Building and Infrastructure Casals Roige Lluis Spain Oficina tecnica d’enginyeria civil Goldammer Klaus-R. Germany Deutscher Beton- und Bautechnik-Verein e.V. Motzko Christoph Germany TU Darmstadt Reinisch Alexander Austria Doka Industrie GmbH Boska Erik Germany TU Darmstadt Pacios Alvarez Antonia Spain ETS Ingenieros Industriales - UPM de Weerdt Klaartje Norway NTNU Hofstadler Christian Austria Institut für Baubetrieb und Bauwirtschaft Fischer Karen Germany Leibniz Universität Hannover Cauberg Nikki Belgium WTCB-CSTC-BBRI Hierlein Elisabeth Germany FDB - Fachvereinigung Lohaus Ludger Germany Leibniz Universität Hannover Fernández-Ordóñez David Switzerland fib Barragan Bryan France OCV Chambery International Tadros Maher United States University of Nebraska-Lincoln Gjerde Morten New Zealand Victoria University of Wellington
TG4.6 - Constitutive laws for concretes with supplementary cementitious materials
The use of Supplementary Cementitious Materials (SCM) as binder in concrete is increasing, mainly driven by the need of the concrete industry to make concrete more environmentally friendly and in particular to meet official requirements for lower CO2 emissions. Here, it is to replace considerable amount of the high emitting Portland cement with low emitting SCM. The fib Model Code for Concrete Structures 2010 (MC2010) covers the use of SCM, but limits the materials and the amount of SCM. The overall motive of fib Task Group 4.6 (TG4.6) is to prepare the basis for an extension of the MC2010 that includes assessment of less known SCM as well as larger replacements.
TG4.6 aims to prepare a state-of-the-art report addressing the items in chapter 5.1 Materials – Concrete in the MC2010. The constitutive relations can be formulated as in, and assessed in relation to compliance with those given in MC2010.
First name Last name Country Affiliation Dehn Frank Germany KIT Karlsruher Institut für Technologie Ye Guang Netherlands Delft University of Technology Hooton Doug Canada University of Toronto Lagerblad Björn Sweden CBI Visser Jeanette Netherlands Strukton Engineering Bier Thomas Germany TU Bergakademie Freiberg Helland Steinar Norway S Helland Konsult Andrade Carmen Spain - Pade Claus Denmark Danish Technological Institute Vollpracht Anya Germany Private Fernández-Ordóñez David Switzerland fib Denarie Emmanuel Switzerland EPF Lausanne de Schutter Geert Belgium Ghent University