• COM5: Reinforcements

    COM5: Reinforcements

  • COM5: Reinforcements

    COM5: Reinforcements

Motivation

fib Commission 5 (COM5) gathers a balanced mix of experts coming from various fields (academics, owners, suppliers, government agencies and testing laboratories) who are volunteering their work into several task groups aiming to provide knowledge and information to students and the professional workforce for the best use of concrete.

Scope and objective of technical work

The scope of COM5 is to promote the technology for reinforcing and prestressing materials and systems and to improve their quality. This includes aspects from design, production, testing, up to the installation and final use of these materials and systems. The scope also includes maintaining and improving dialogue between producers, specifiers, and users of these materials and systems.

Finally, COM5 encourages new research and developments within its scope.

 

Theodore L. NeffCommission Chair
Theodore L. Neff
Hermann WeiherDeputy Chair
Hermann Weiher

First name Last name Country Affiliation
- - - -
Hans Rudolf Ganz Switzerland Ganz Consulting
Josée Bastien Canada University Laval
Gordon Clark United Kingdom Consultant
Akio Kasuga Japan Sumitomo Mitsui Construction Co.Ltd.
Ulf Nürnberger Germany University of Stuttgart
Kiyotaka Hosoi Japan Shinko Wire Company Ltd
Cor Kuilboer Netherlands Private
Pedro A. de Oliveira Almeida Brazil Sao Paulo University
Steinar Leivestad Norway Norconsult AS
José Bagg Argentina Consultant
George Katergarakis South Africa Scaw Wire and Strand
Niklaus Winkler Switzerland Nik Engineering
Thore Hagberg Norway Dr.Ing. Thore Hagberg A.S.
Milan Chandoga Slovakia Projstar PK, s.r.o.
Theodore Neff United States Post Tensioning Institute
Larry Krauser United States General Technologies, Inc.
Tommaso Ciccone Italy TENSA (Tensacciai s.r.l.)
Werner Brand Germany DYWIDAG-Systems International
Antonio Caballero Switzerland BBR VT international Ltd.
Carol Hayek United States CCL
Guillermo Ramirez Switzerland VSL International Ltd
Cesare Prevedini Brazil Protende Sistemas e Métodos de Construcoes
Randall Poston United States Pivot Engineers
Jan Winkler Denmark Atkins
Christian Gläser Germany DYWIDAG-Systems International
Alex Gutsch Germany TU Braunschweig
Stijn Matthys Belgium Magnel Lab. for Concrete Research
Teddy Theryo United States Florida Department of Transportation
Hermann Weiher Germany matrics engineering GmbH
Manuel Elices Calafat Spain Universidad Politecnica de Madrid
Jaime Gálvez Ruiz Spain Universidad Politecnica de Madrid
Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
Hiroshi Mutsuyoshi Japan Saitama University
Josiane Piron Belgium Ministry of Equip. and Transport
Jan Piekarski Poland BBR Polska Sp. z o. o.
Oscar Schaaf Netherlands TNO Bouw en Ondergrond
David Fernández-Ordóñez Switzerland fib

  • TG5.1 - FRP Reinforcement for concrete structures

    The main objectives of TG5.1 are:

    • The elaboration of design guidelines in accordance with the design format of the fib Model Code for Concrete Structures 2010 (“fib MC2010”) and Eurocode 2.
    • Link with other initiatives regarding material testing and characterisation & development of standard test methods.
    • Participation in the international forum in the field of advanced composite reinforcement, stimulating the use of FRP for concrete structures.
    • Guidance on practical execution of concrete structures reinforced/prestressed/strengthened by FRP.


    Stijn MatthysConvener
    Stijn Matthys

    First name Last name Country Affiliation
    - - - -
    Luc Taerwe Belgium Ghent University
    György L. Balázs Hungary Budapest Univ. of Techn. & Economics
    Francesca Ceroni Italy Universitá degli Studi di Napoli
    Steve Denton United Kingdom WSP Parsons Brinckerhoff Ltd
    Adorján Borosnyói Hungary Budapest Univ. Technology
    Viktor Gribniak Lithuania Vilnius Gediminas Technical University
    Stavroula Pantazopoulou Cyprus Demokritus Univ. of Thrace
    Emidio Nigro Italy -
    Andreea Serbescu United Kingdom University of Sheffield+ Amey consulting
    Dionysios Bournas United Kingdom Nottingham
    Cristina Barris Spain University of Girona
    Valter Carvelli Italy -
    Tommaso D’Antino Greece University of Patras
    Emmanuel Ferrier France -
    Juan Manuel Gallego Switzerland -
    Reyes Garcia Spain IDEAM SA
    Marcin Haffke Germany -
    Tomislav Kisicek Croatia -
    Cristina Mias Oller Spain -
    Nicola Nistico Italy -
    Alessandro Proia Belgium -
    Theodoros Rousakis Greece Democritus University of Thrace
    Andreas Schmitt Germany -
    José Manuel de Sena Cruz Portugal -
    Ted Donchev United Kingdom -
    Vitauts Tamuzs Latvia University of Latvia
    Nicolae Taranu Romania -
    Georgia Thermou Greece Aristotle University of Thessaloniki
    Matthias Pahn Germany -
    Eva Scharfenberg Germany FIREP Rebar Technology GmbH
    Francesco Esposito Italy ATP s.r.l
    Miroslav Cerny Czech Republic -
    Wolfgang Finckh Germany -
    Michael Karantzikis Greece -
    Christoforos Kolyvas Greece FYFE EUROPE S.A.
    Martin Kurth Germany -
    Gabriel Sas Sweden Lulea University of Technology/NORUT
    Carol Shield United States -
    Lander Vasseur Belgium -
    Chris Burgoyne United Kingdom Univ. of Cambridge
    Douglas Gremel United States Hughes Brothers
    Patrice Hamelin France Université Lyon
    Gaetano Manfredi Italy Universita di Napoli Federico II
    Antonio Nanni Italy Univ. degli Studi di Napoli Federico II
    Roland Niedermeier Germany -
    Marco Pisani Italy Politecnico di Milano
    Sami Rizkalla United States North Carolina State Univ.
    Jin-Guang Teng China Hong Kong Polytechnic University
    Erik Thorenfeldt Norway SINTEF Building & Infrastructure
    Andreas Winistörfer Switzerland Carbo Link
    Gerhard Zehetmaier Germany Bilfinger Berger
    L. Juvandes Portugal Universidade do Porto
    Laura de Lorenzis Italy University of Salento
    Björn Täljsten Sweden -
    Jonathan Shave United Kingdom -
    I.E. Harik United States -
    Ryan Koch United States -
    Aniello Palmieri Belgium Superior Products Europe
    T.J. Ibell United Kingdom University of Bath
    Benjamin Jütte Germany Schöck Bauteile GmbH
    Urs Meier Switzerland EAWAG-EMPA
    Marc Schürch Switzerland FiReP International AG
    Adri Vervuurt Netherlands TNO
    Maher Tadros United States -
    Maria Rosaria Pecce Italy Università del Sannio
    Dick Hordijk Netherlands Adviesbureau Hageman
    Andrea Prota Italy Universita di Napoli Federico II
    Maurizio Guadagnini United Kingdom University of Sheffield
    Thierry Berset Switzerland SIKA Services AG
    Manfred Curbach Germany Technische Univ. Dresden
    Raimo Füllsack-Köditz Germany Halfen Group
    Josef Hegger Germany RWTH Aachen
    Kypros Pilakoutas United Kingdom University of Sheffield
    Konrad Zilch Germany Private
    Antonio Bilotta Italy University of Naples Federico II
    Sándor Sólyom Hungary Budapest Univ. of Techn. & Economics
    Lluis Torres Spain University of Girona
    Joaquim Barros Portugal Universidade do Minho
    Kurt Borchert Germany Jacobs Projects GmbH
    B. Kriekemans Belgium Fortius
    Stijn Matthys Belgium Magnel Lab. for Concrete Research
    Giorgio Monti Italy Sapienza Università di Roma
    Carlos Ospina United States BergerABAM
    Scott Smith Australia Southern Cross University
    Eythor Thorhallsson Iceland Reykjavik University
    André Weber Germany Schöck Bauteile GmbH
    Matteo Di Benedetti United Kingdom University of Sheffield
    Szymon Cholostiakow United Kingdom University of Sheffield
    Steven Nolan United States Florida Department of Transportation
    Christoph Czaderski-Forchmann Switzerland EMPA
    Thanasis Triantafillou Greece University of Patras
    Mark Verbaten Netherlands ABT bv
    Tamon Ueda Japan Hokkaido University
    Stuart Matthews United Kingdom Building Research Establishment Ltd
    Eva Oller Ibars Spain Technical University of Catalonia
    David Fernández-Ordóñez Switzerland fib

  • TG5.2 - Reinforcing steels and systems

    fib Task Group 5.2 (TG5.2) will consider all aspects related to reinforcing steels and systems from design to manufacturing, testing and final installation, use and maintenance. It will initially address several topics considered high priority. TG5.2 will create sub-groups to work on particular subjects.

    Areas of interest:

    • review of the reinforcing steel grades available on the market (strength, ductility, bond, fatigue, durability properties) and relevant concrete structure design codes;
    • manual for reinforcing materials and systems;
    • technical report on fabrication of reinforcement;
    • state of the knowledge on the bond properties of reinforcing steels;
    • state of the knowledge on the fatigue resistance properties of reinforcing steels.


    f26a5b1890dc0eaf1ac664c5Convener
    TBD

    First name Last name Country Affiliation
    - - - -
    Hans Rudolf Ganz Switzerland Ganz Consulting
    Josée Bastien Canada University Laval
    Theo Breedijk Netherlands -
    Guanglu Lu China Tongji University
    S. A. Madatjan Russia, Federation of Open Joint Stock Company
    Mark Turner Australia M. D. Turner Consulting Pty. Ltd.
    Jean-François Guitonneau France -
    Louis-Jean Hollebecq France -
    Ulf Nürnberger Germany University of Stuttgart
    Silvino Pompeu Santos Portugal -
    Tormod Dyken Norway -
    Thore Hagberg Norway Dr.Ing. Thore Hagberg A.S.
    Steven McCabe United States Nat. Inst. of Standards & Technologies
    Albin Kenel Switzerland Hochschule Rapperswil
    Manuel Elices Calafat Spain Universidad Politecnica de Madrid
    Josiane Piron Belgium Ministry of Equip. and Transport
    David Fernández-Ordóñez Switzerland fib
    Larry Krauser United States General Technologies, Inc.

  • TG5.3 - Manual for prestressing materials and systems

    Task Group 5.3 is preparing a compact manual for prestressing materials and systems. It may contain, but is not limited to, items such as specifications, recommendations for prestressing tendons for posttensioning, analysis and design of post-tensioned structures, and possibly helpful suggestions to overcome specific problems in installation and use. However, the document is not intended to be a textbook on basic principles and theory of prestressed concrete. Where appropriate, the user will be referred to available textbooks. Because of the rapidly changing technology it might become necessary to review and update this manual from time to time (every four to eight years).


    Josée BastienConvener
    Josée Bastien

    First name Last name Country Affiliation
    - - - -
    Josée Bastien Canada University Laval
    J. L. Bringer France Freyssinet
    Pierre Boitel France Freyssinet
    Theodore Neff United States Post Tensioning Institute
    Guillermo Ramirez Switzerland VSL International Ltd
    Randall Poston United States Pivot Engineers
    David Fernández-Ordóñez Switzerland fib

  • TG5.4 - Recommendations for ground anchor systems

    The overall motivation of Task Group 5.4 (TG5.4) is to establish a modern recommendation for the qualification of ground anchor systems.

    The main objective of TG5.4 is to prepare a bulletin entitled “Recommendation for ground anchor systems” based on and updating earlier documents such as the “Recommendations for the design and construction of ground anchors”, 1996. The recommendations will include significant content for qualification of ground anchor systems covering prestressed permanent and temporary anchors.


    Toshiro KidoConvener
    Toshiro Kido
    Hermann WeiherConvener
    Hermann Weiher

    First name Last name Country Affiliation
    - - - -
    Josée Bastien Canada University Laval
    Ulf Nürnberger Germany University of Stuttgart
    Javier Ripoll Garcia-Mansilla Spain Ripoll Consulting de Ing.
    Cyril Gaucherand France -
    Gosta Ericson Sweden -
    Donald Bruce United States -
    Mark Sinclair Australia -
    Horst Aschenbroich Canada -
    Michael Glassl Germany -
    Kay Löffler Germany -
    Tony Barley United Kingdom -
    Hiroshi Yamada Japan -
    Stephen Cartney COM_COMMUNITY_LANG_NAME_ -
    Devon Mothersille United Kingdom -
    Theodore Neff United States Post Tensioning Institute
    Hermann Weiher Germany matrics engineering GmbH
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    David Fernández-Ordóñez Switzerland fib

  • TG5.5 - Cables for cable-supported bridges

    fib Bulletin 30, "Acceptance of stay cable systems using prestressing steels", was published in 2005. Since then, extradosed bridges, a bridge typology that is placed between cable-stayed bridges and ordinary girder bridges, became more and more popular. While extradosed bridges were already known at the time of publication of Bulletin 30, the knowledge was not enough to include this typology into the document.

    Additionally, after more than seven years, there is a general request from system suppliers, designers and authorities to update the current document so new stay cable system/solutions, applications, acquired knowledge, installation methods, etc. are discussed and included in a new document version.

    The goal of Task Group 5.5 (TG5.5) is to update the current recommendation document so extradosed bridges are fully included (e.g. loading over SLS design, loading over ULS design, design & detailing, construction, initial type testing, etc.).


    f26a5b1890dc0eaf1ac664c5Convener
    Antonio Caballero
    f26a5b1890dc0eaf1ac664c5Convener
    Hiroshi Mutsuyoshi

    First name Last name Country Affiliation
    - - - -
    Josée Bastien Canada University Laval
    Akio Kasuga Japan Sumitomo Mitsui Construction Co.Ltd.
    Peter Curran United Kingdom Ramboll UK
    Gregor Fischer Denmark -
    Kiyotaka Hosoi Japan Shinko Wire Company Ltd
    Gaku Ohashi Japan Central Nippon Expressway Company Ltd
    Christos Georgakis Denmark Technical University of Denmark
    Matthias Wild Germany Technical University of München
    Adrian Tejera Spain Tycsa PSC Spain
    Cor Kuilboer Netherlands Private
    David Goodyear United States T.Y. Lin International
    Ben Soule United States International Bridge Technologies, Inc
    Milan Chandoga Slovakia Projstar PK, s.r.o.
    Theodore Neff United States Post Tensioning Institute
    Tommaso Ciccone Italy TENSA (Tensacciai s.r.l.)
    Werner Brand Germany DYWIDAG-Systems International
    Antonio Caballero Switzerland BBR VT international Ltd.
    Rachid Annan Switzerland VSL International LTD
    Kathy Meiss Germany Ingenieurgesellschaft Meiss Grauer Holl mbh & Co. KG
    Jan Winkler Denmark Atkins
    Christian Gläser Germany DYWIDAG-Systems International
    Alex Gutsch Germany TU Braunschweig
    Teddy Theryo United States Florida Department of Transportation
    Hermann Weiher Germany matrics engineering GmbH
    Pedro A. de Oliveira Almeida Brazil Sao Paulo University
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Hiroshi Mutsuyoshi Japan Saitama University
    Jan Piekarski Poland BBR Polska Sp. z o. o.
    David Fernández-Ordóñez Switzerland fib

  • TG5.6 - Behaviour under cryogenic conditions

    The growing worldwide use of liquefied natural gas (LNG) has seen the development of significant LNG storage tank facilities for LNG exporters and importers. These massive storage tanks are essential for receiving and safe storage of the liquid gas. Despite this, the last FIP publication on prestressed concrete under cryogenic conditions dates back to 1988 (draft state-of-the-art report – Cryogenic behavior of materials for prestressed concrete).

    The main goal of fib Task Group 5.6 (TG5.6) is the development of a new fib recommendation document in which key aspects in concrete prestressed LNG tanks such as design recommendations, execution, system and material testing, control/monitoring, etc., are covered.


    f26a5b1890dc0eaf1ac664c5Convener
    Antonio Caballero
    f26a5b1890dc0eaf1ac664c5Convener
    Alex W. Gutsch

    First name Last name Country Affiliation
    - - - -
    Josée Bastien Canada University Laval
    Matthias Wild Germany Technical University of München
    Adrian Tejera Spain Tycsa PSC Spain
    Ivica Zivanovic France -
    Josef Rötzer Germany DYWIDAG
    Lucie Vandewalle Belgium Catholic University Leuven
    Adrian Gnägi Switzerland VSL International Ltd.
    Antonio Caballero Switzerland BBR VT international Ltd.
    Yasuhiro Sakai Japan Obayashi Corporation
    Markus Traute Germany DYWIDAG-Systems International
    Tommaso Ciccone Italy TENSA (Tensacciai s.r.l.)
    Christian Gläser Germany DYWIDAG-Systems International
    Alex Gutsch Germany TU Braunschweig
    Manuel Elices Calafat Spain Universidad Politecnica de Madrid
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Takeyoshi Nishizaki Japan Osaka Gas Company
    Matus Benovic Slovakia Industrial Steel Wires EMEA
    David Fernández-Ordóñez Switzerland fib
    Larry Krauser United States General Technologies, Inc.
    Ferdinand Rostasy Germany Private

  • TG5.7 - An owner’s guide to demolition of concrete structures

    There is general agreement that the 1982 FIP report, “Demolition of reinforced and prestressed concrete structures” should be reviewed and updated. The group is of the opinion that the most important issues to be addressed are relevant principally to owners of buildings and not a presentation of various demolition techniques.


    f26a5b1890dc0eaf1ac664c5Convener
    TBD

    First name Last name Country Affiliation
    - - - -
    Robert Jansson Sweden -
    Teddy Theryo United States Florida Department of Transportation
    David Fernández-Ordóñez Switzerland fib

  • TG5.8 - External tendons for bridges

    As a result of durability issues with bonded internal tendons, external tendons in bridge construction have become more popular in several countries. External tendons are now widely used throughout the world. While many of the technological aspects of external tendons look similar to internal bonded tendons, there are significant differences between the two, e.g. in terms of corrosion protection, tendon deviation blocks, tendon curvature and lay out, tendon replaceability, tendon force transfer to the structure, and ultimate strength. These differences merit the amendment of existing specifications, or the preparation of new specifications for external tendon design, testing, installation, duct durability, corrosion protection, maintenance and eventual replacement.

    The goal of Task Group 5.8 (TG5.8) is to prepare a technical report on the applications of external tendons in bridges from different countries and focusing on system related topics with minor implementation of design aspects of the structure using external tendons.


    Teddy S. TheryoConvener
    Teddy S. Theryo

    First name Last name Country Affiliation
    - - - -
    Josée Bastien Canada University Laval
    Akio Kasuga Japan Sumitomo Mitsui Construction Co.Ltd.
    Teddy Theryo United States Florida Department of Transportation
    José Turmo Coderque Spain Universitat Politecnica de Catalunya
    Pierre Boitel France Freyssinet
    Cor Kuilboer Netherlands Private
    Peter Matt Switzerland Private
    Milan Chandoga Slovakia Projstar PK, s.r.o.
    Guillermo Ramirez Switzerland VSL International Ltd
    Wanxu Zhu China Liuzhou OVM Machinery Co.
    Christian Gläser Germany DYWIDAG-Systems International
    Hermann Weiher Germany matrics engineering GmbH
    Dong Xu China Tongji University
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Jan Piekarski Poland BBR Polska Sp. z o. o.
    Hans Rudolf Ganz Switzerland Ganz Consulting
    David Fernández-Ordóñez Switzerland fib
    Larry Krauser United States General Technologies, Inc.

  • TG5.9 - Sulphates and sulphide limits in grout and concrete for prestressing

    Over recent years some significant work has gone into improving grouting specifications around the world. Of particular concern is that historically there have been limits set for the Sulphate and Sulphide Ion content in some countries (in EN and ISO) but not in others. Further, high sulphate levels in grout have been identified as a contributing factor in premature corrosion observed on several post-tensioned bridges in the United States. After considerable searching there appears to be no available published relevant research to support current limits. Further there is increased pressure to use slag cements, for reasons of sustainability, which cannot pass the current limitations. There is clear justification to form a scientific research basis for any limits both in grout and in concrete for pretensioned prestressed applications.

    fib can collect the current State-of-the-Art of such limits and any background research. It is also proposed to initiate an appropriate research project. This will inform either a Technical Report or Research Papers for publication, as well as informing possible revisions of National and International standards.


    Carmen AndradeConvener
    Carmen Andrade

    First name Last name Country Affiliation
    - - - -
    Hans Rudolf Ganz Switzerland Ganz Consulting
    Carmen Andrade Spain Instituto Eduardo Torroja
    David Fernández-Ordóñez Switzerland fib

 

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