• 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
Akio Kasuga Japan Sumitomo Mitsui Construction Co.Ltd.
Ulf Nürnberger Germany University of Stuttgart
Kiyotaka Hosoi Japan Shinko Wire Company Ltd
Pedro Almeida Brazil Sao Paulo University
Niklaus Winkler Switzerland Nik Engineering
Thore Hagberg Norway Dr.Ing. Thore Hagberg A.S.
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
Randall Poston United States Pivot Engineers
Christian Gläser Germany DYWIDAG-Systems International
Teddy Theryo United States Florida Department of Transportation
Manuel Elices Calafat Spain Universidad Politecnica de Madrid
Jan Piekarski Poland BBR Polska Sp. z o. o.
David Fernández-Ordóñez Switzerland fib
Theodore Neff United States General Technologies, Inc.
Theodore Neff United States General Technologies, Inc.
Jaime Gálvez Ruiz Spain Universidad Politecnica de Madrid
Paul Gregory United Kingdom MPA - The Concrete Centre
Jan Winkler Denmark Atkins
Hiroshi Mutsuyoshi Japan Saitama University
Hermann Weiher Germany Matrics Engineering GmbH
James Collins United Kingdom Ramboll
Alex Gutsch Germany TU Braunschweig
Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
Stijn Matthys Belgium Ghent University
Josiane Piron Belgium SPW MI – Service public de Wallonie Mobilité et Infrastructures
Ivica Zivanovic France Freyssinet
Dong Xu China Tongji University
Vittorio Valentini Italy Siderurgica Latina Martin S.p.A.
Tony Johnson United States PTI

  • 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
    György L. Balázs Hungary Budapest Univ. of Techn. & Economics
    Francesca Ceroni Italy Universitá degli Studi di Napoli
    Voula (S.J.) Pantazopoulou Canada The Lassonde Faculty of Engineering, York University
    Emidio Nigro Italy Università degli Studi di Napoli Federico II
    Andreea Serbescu United Kingdom University of Sheffield+ Amey consulting
    Dionysios Bournas United Kingdom Nottingham University
    Cristina Barris Spain University of Girona
    Valter Carvelli Italy Politecnico di Milano
    Tommaso D’Antino Greece University of Patras
    Emmanuel Ferrier France Université Lyon 1
    Reyes Garcia Lopez United Kingdom School of Engineering, University of Warwick
    Marcin Haffke Germany TU Kaiserslautern
    Tomislav Kisicek Croatia University of Zagreb
    Nicola Nistico Italy Sapienza Università di Roma
    Alessandro Proia Belgium Ghent University
    José Manuel de Sena Cruz Portugal University of Minho
    Ted Donchev United Kingdom Kingston University
    Matthias Pahn Germany University of Kaiserslautern
    Francesco Esposito Italy ATP s.r.l
    Christoforos Kolyvas Greece FYFE EUROPE S.A.
    Douglas Gremel United States Owens Corning
    Antonio Nanni Italy Univ. degli Studi di Napoli Federico II
    Laura de Lorenzis Italy University of Salento
    Björn Täljsten Sweden Luleå University of Technology
    Maria Rosaria Pecce Italy Università del Sannio
    Andrea Prota Italy Universita di Napoli Federico II
    Thierry Berset Switzerland SIKA Services AG
    Konrad Zilch Germany -
    Antonio Bilotta Italy University of Naples Federico II
    Carlos Ospina United States WSP USA Inc.
    Scott Smith Australia The University of Adelaide
    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
    Thanasis Triantafillou Greece University of Patras
    Eva Oller Ibars Spain Technical University of Catalonia
    David Fernández-Ordóñez Switzerland fib
    Lluis Torres Spain University of Girona
    B. Kriekemans Belgium Fortius
    Sándor Sólyom Hungary Budapest Univ. of Techn. & Economics
    Vanessa Buchin Roulie Switzerland VSL INTERNATIONAL
    Viktor Gribniak Lithuania Vilnius Gediminas Technical University
    Tamon Ueda China Shenzhen University
    Stijn Matthys Belgium Ghent University
    Renata Kotynia Poland Lodz University of Technology
    Vesna Raicic United Kingdom University of Bath
    Ana Veljkovic Italy Politecnico di Milano
    Giuseppe Vago Italy ATP s.r.l
    Maurizio Guadagnini United Kingdom University of Sheffield
    Theodoros Rousakis Greece Democritus University of Thrace
    Lampros Koutas Greece University of Thessaly
    Joaquim de Barros Portugal Universidade do Minho
    Georgia Thermou United Kingdom University of Nottingham
    Mark Verbaten Netherlands ABT bv
    Yu Zheng China -
    Tamás Nagy-György Romania Politehnica Univ. of Timisoara
    Ciro Del Vecchio Italy University of Naples Federico II
    Marta Del Zoppo Italy University of Naples Federico II
    Erkan Akpinar Turkey Kocaeli University
    Marta Baena Spain University of Girona
    Bryan Barragan France OCV Chambery International
    Chen Jian-Fei Taiwan, Province of China Southern University of Science and Technology
    Mihaela Anca Ciupala United Kingdom University of East London
    Halldor Gunnar Dadason Iceland Reykjavik University, Orbicon Artic
    Gianmarco de Felice Italy Roma Tre University
    Marco Di Ludovico Italy University of Naples
    David Escolano Margarit United Kingdom The University of Sheffield
    Sorin-Codrut Florut Romania Politehnica University of Timisoara
    Krajnović Ivana Belgium Ghent University
    Marianoela Leone Italy Universita del Salento
    Ali M. Mohaghegh Germany E. ON Climate & Renewables GmbH
    Azer Maazoun Belgium Ghent University
    Niek Pouwels Netherlands ABT
    Francesca Roscini Italy University of Sheffield
    Roman Sedlmair Germany Karlsruher Institut für Technology (KIT)
    Valeriu Stoian Romania -
    Souzana Tastani Greece Democritus University of Thrace
    Niki Trochoutsou United Kingdom University of Sheffield
    Arslan Yaqub Belgium Ghent University
    Katarzyna Zdanowicz Germany Leibniz Universität Hannover

  • 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.


    Paul GregoryConvener
    Paul Gregory
    Ladin CamciCo-Convener
    Ladin Camci

    First name Last name Country Affiliation
    Hans Rudolf Ganz Switzerland Ganz Consulting
    Ulf Nürnberger Germany University of Stuttgart
    Thore Hagberg Norway Dr.Ing. Thore Hagberg A.S.
    Steven McCabe United States Nat. Inst. of Standards & Technologies
    Manuel Elices Calafat Spain Universidad Politecnica de Madrid
    David Fernández-Ordóñez Switzerland fib
    Larry Krauser United States General Technologies, Inc.
    Jenny Burridge United Kingdom The Concrete Centre
    John Cairns United Kingdom Heriot-Watt University
    Paul Gregory United Kingdom MPA - The Concrete Centre
    Josiane Piron Belgium SPW MI – Service public de Wallonie Mobilité et Infrastructures
    Ladin Camci United Kingdom CARES (Certification Authority for Reinforcing Steels)
    Gordon Clark United Kingdom Consultant
    Rolf Eligehausen Germany IWB, Universität Stuttgart
    Charles Goodchild United Kingdom The Concrete Centre
    David Gustafson United States CRSI - Concrete Reinforcing Steel
    Sven Junge Germany ISB Institut für Stahlbetonbewehrung e.V.
    Dennis Keogh United Kingdom Laing O’Rourke Infrastructure Services
    Andrew Truby United Kingdom Truby Stevenson Ltd

  • TG5.3 - Prestressing materials and systems

    Since Eugène Freyssinet’s first of use high-strength steel wire for prestressing concrete in the late 1920s, there have been many changes in prestressing systems used around the world. Current systems bear little resemblance to many of the older methods used in the past. Designers and contractors need information regarding these historical practices and materials to evaluate existing prestressed concrete in need of repair and to determine effective strategies to extend service life and enhance performance. Further, as new technologies are developed, they are often used in some countries but not in others.

    Task Group 5.3 (TG5.3) has established two goals: 1) to develop a state-of-the-art report describing the evolution and development of prestressing systems and to identify recent innovations and advances, and 2) to develop a new bulletin that provides recommendations for the installation of post-tensioning systems.


    Tommaso CicconeConvener
    Tommaso Ciccone

    First name Last name Country Affiliation
    Guillermo Ramirez Switzerland VSL International Ltd
    David Fernández-Ordóñez Switzerland fib
    Theodore Neff United States General Technologies, Inc.
    Theodore Neff United States General Technologies, Inc.
    Tommaso Ciccone Italy TENSA (Tensacciai s.r.l.)
    James Collins United Kingdom Ramboll
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Ivica Zivanovic France Freyssinet
    Andrea Castiglioni di Caronno Italy TENSA (Tensacciai s.r.l.)
    Christian Gläser Germany DYWIDAG-Systems International
    Carol Hayek United States CCL
    Kiyotaka Hosoi Japan Shinko Wire Company Ltd
    Shinya Ikehata Japan Central Nippon Expressway Cie Ltd
    Larry Krauser United States General Technologies, Inc.
    Lev Zaretsky Russian Federation Armasteel Llc
    Hilina Lemma Ethiopia -

  • 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.


    Hermann WeiherConvener
    Hermann Weiher

    First name Last name Country Affiliation
    Ulf Nürnberger Germany University of Stuttgart
    Javier Ripoll Garcia-Mansilla Spain Ripoll Consulting de Ing.
    Cyril Gaucherand France Freyssinet
    Gosta Ericson Sweden Sweco VBB AB
    Mark Sinclair Australia Structural Systems (Civil) Pty Ltd
    David Fernández-Ordóñez Switzerland fib
    Theodore Neff United States General Technologies, Inc.
    Theodore Neff United States General Technologies, Inc.
    Chris Irvin United Kingdom DYWIDAG-SYSTEMS INTERNATIONAL Ltd.
    Matthias Ryser Germany Dr. Vollenweider AG
    Hermann Weiher Germany Matrics Engineering GmbH
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Philipp Egger Switzerland VSL International LTD
    Behzad Manshadi Switzerland BBR VT International Ltd
    Matthias Wild Germany Technical University of München
    Adrian Gnägi Switzerland VSL International Ltd.

  • 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.).


    Antonio CaballeroConvener
    Antonio Caballero
    Hiroshi MutsuyoshiConvener
    Hiroshi Mutsuyoshi

    First name Last name Country Affiliation
    Josée Bastien Canada University Laval
    Akio Kasuga Japan Sumitomo Mitsui Construction Co.Ltd.
    Gregor Fischer Denmark Technical University of 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
    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
    Christian Gläser Germany DYWIDAG-Systems International
    Teddy Theryo United States Florida Department of Transportation
    Pedro Almeida Brazil Sao Paulo University
    Jan Piekarski Poland BBR Polska Sp. z o. o.
    David Fernández-Ordóñez Switzerland fib
    Theodore Neff United States General Technologies, Inc.
    Theodore Neff United States General Technologies, Inc.
    Erik Mellier France Freyssinet International & Cie
    Jan Winkler Denmark Atkins
    Hiroshi Mutsuyoshi Japan Saitama University
    Hermann Weiher Germany Matrics Engineering GmbH
    Alex Gutsch Germany TU Braunschweig
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Shinya Ikehata Japan Central Nippon Expressway Cie Ltd
    Peter Curran United Kingdom Ramboll UK
    Manuel Escamilla García-Galán Spain PONTEM
    Robert Widmann Switzerland -

  • 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.


    Antonio CaballeroConvener
    Antonio Caballero
    Alex W. GutschConvener
    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 Freyssinet
    Josef Rötzer Germany DYWIDAG
    Adrian Gnägi Switzerland VSL International Ltd.
    Antonio Caballero Switzerland BBR VT international Ltd.
    Markus Traute Germany DYWIDAG-Systems International
    Christian Gläser Germany DYWIDAG-Systems International
    Manuel Elices Calafat Spain Universidad Politecnica de Madrid
    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.
    Yasuhiro Sakai Japan Obayashi Corporation
    Alex Gutsch Germany TU Braunschweig
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.
    Lucie Vandewalle Belgium KULeuven
    Jeovan Freitas Norway Private

  • 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.


    Christian GläserConvener
    Christian Gläser
    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
    Guillermo Ramirez Switzerland VSL International Ltd
    Wanxu Zhu China Liuzhou OVM Machinery Co.
    Christian Gläser Germany DYWIDAG-Systems International
    Dong Xu China Tongji University
    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.
    Hermann Weiher Germany Matrics Engineering GmbH
    Toshiro Kido Japan Sumitomo (SEI) Steel Wire Corp.

  • 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
    Carmen Andrade Spain -
    David Fernández-Ordóñez Switzerland fib

 

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