fib Commission 8 (COM8) aims to identify concrete-related durability issues, consider and review current information available on the topic, and provide guidance on materials and methods that will assist in optimal durability design of new structures and restoration design of existing structures.
Scope and objective of technical work
Service life design forms one part of this and COM8 will develop rational procedures to obtain an optimal technical-economic performance of concrete structures in service and to ensure that sustainability, whole-life cost and associated through-life perspectives are taken into account as part of the process by which experience gained from practice is fed back to the design, execution, maintenance and rehabilitation stages. COM8 work will address the structural service life aspects of structures with rational strategies, procedures and criteria for design, assessment, maintenance and remediation.
COM8 work also includes review of methods for the determination of inspection frequencies as well as methods based on sound engineering principles that will provide optimal information for the durability assessment of marine structures.
|First name||Last name||Country||Affiliation|
|Joost||Gulikers||Netherlands||Rijkswaterstaat Centre for Infrastructure|
|Anders Ole Stubbe||Solgaard||Denmark||Cowi A/S|
|Steinar||Helland||Norway||S Helland Konsult|
|Aad||Van Der Horst||Netherlands||BAM Infraconsult bv.|
|Carmen||Andrade||Spain||Centre Internacional de Mètodes Numèrics en l’Ènginyeria (CIMNE)|
|Carola K.||Edvardsen||Denmark||Cowi AS|
|Alberto||Meda||Italy||University of Rome “Tor Vergata”|
|Norbert||Randl||Austria||Carinthia Univ. of Applied Sciences|
|Zila||Rinaldi||Italy||University of Rome “Tor Vergata”|
|Alfred||Strauss||Austria||Univ. Bodenkultur Vienna|
|Roberto||Torrent||Switzerland||Quali- Ti-Mat Sagl|
|Ainars||Paeglitis||Latvia||Riga Technical University|
|Christoph||Gehlen||Germany||TUM School of Engineering and Design|
|Stuart||Matthews||United Kingdom||Matthews Consulting|
|Lionel||Linger||France||Vinci Construction Grand Projets|
|Rui Miguel||Ferreira||Finland||VTT Techn. Research Centre of Finland|
|Michael||Bartholomew||United States||CH2M HILL|
|José||Campos e Matos||Portugal||University of Minho|
|Harshavardhan||Subbarao||India||Construma Consultancy Pvt. Ltd.|
|Joan||Casas Rius||Spain||Tech. Univ. of Catalunya, UPC-BarcelonaTech|
|Frank||Dehn||Germany||KIT Karlsruher Institut für Technologie|
|Jose||Pacheco||United States||MJ2 Consulting|
|Agnieszka||Bigaj-van Vliet||Netherlands||TNO - Buildings, Infrastructures and Maritime|
|David||Gardiner||Australia||SMEC Australia Pty Ltd|
|Hans-Dieter||Beushausen||South Africa||University of Cape Town|
|Stuart||Curtis||Australia||RTR Bridge Construction Services|
|Qing-feng||Liu||China||Shanghai Jiao Tong University|
|Harald||Müller||Germany||SMP Ingenieure im Bauwesen GmbH|
|Brett||Pielstick||United States||Eisman & Russo|
|Muhammad Imran||Rafiq||United Kingdom||University of Brighton|
|Jean Michel||Torrenti||France||Univ Gustave Eiffel|
|François||Toutlemonde||France||Université Gustave Eiffel|
|Stefanie||Von Greve-Dierfeld||Switzerland||TFB Technology and Research for Concrete Structures|
|Joost||Walraven||Netherlands||Delft University of Technology|
|Elisabete||Teixeira||Portugal||University of Minho|
|Eduardo||Julio||Portugal||Instituto Superior Tecnico, Universidade de Lisboa|
- TG8.1 - Model technical specification for repairs and interventions
- TG8.4 - Life cycle cost (LCC) - Design life and/or replacement cycle
- TG8.8 - Design approaches
- TG8.9 -Deterioration Mechanisms Related to Corrosion
- TG8.11 - Testing and Monitoring
- TG8.12 - Deterioration mechanisms related to other phenomena
TG8.1 - Model technical specification for repairs and interventions
Task Group 8.1 is preparing a 'Compendium on Protection, Repair and Strengthening of Concrete Structures'. This aims to be a repository of large scope knowledge on the topic ‘rehabilitation’, containing short and specific (inspection, design, detailing, and execution) guidelines, listing reference documents (codes, technical reports, scientific papers) and presenting illustrative case studies on each subject.
A first draft of the compendium is almost ready to be reviewed by Commission 8 members, as well as by TG3.4 members. It is envisaged to be published as a technical report or a guide to good practice, depending on the commissions’ recommendations. The document includes three parts, organized in protection, repair and strengthening techniques. A template for methods’ guidelines, as well as a template for case-studies, has been delivered to authors to reach a harmonized presentation of each chapter.
First name Last name Country Affiliation Irina Stipanovic Oslakovic Netherlands University of Twente Anders Ole Stubbe Solgaard Denmark Cowi A/S Carola K. Edvardsen Denmark Cowi AS Júlio Appleton Portugal A2P Consult Toyoaki Miyagawa Japan Kyoto University Frank Papworth Australia BCRC John Cairns United Kingdom Heriot-Watt University David Fernández-Ordóñez Switzerland fib Shoji Ikeda Japan Hybrid Research Inst. Inc. Michael Bartholomew United States CH2M HILL Eduardo Cavaco Portugal Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa José Manuel de Sena Cruz Portugal University of Minho Koichi Kobayashi Japan Gifu University João Ramoacorreia Portugal Instituto Superior Técnico, University of Lisbon Constantinos Repapis Greece University of West Attica Meini Su United Kingdom University of Manchester Takashi Habuchi Japan Toa Corporation Mercedes Sánchez Moreno Spain Universidad de Córdoba André Monteiro Portugal National Laboratory for Civil Engineering Harshavardhan Subbarao India Construma Consultancy Pvt. Ltd. Lojze Bevc Slovenia ZAG Slovenije Christian Christodoulou United Kingdom AECOM Ltd Brett Pielstick United States Eisman & Russo Stephanos Dritsos Greece University of Patras Andreas Lampropoulos United Kingdom University of Brighton Ainars Paeglitis Latvia Riga Technical University Etsuji Kikuta Japan Civil Engineering Research Institute for Cold Region Luis Lima Argentina UNNOBA On Moseley Greece Private David Smith United Kingdom Atkins Takao Ueda Japan University of Tokushima Christos Giarlelis Greece Equidas Consulting Engineers Nicholas Kyriakides Cyprus Cyprus University of Technology Luís Correia Portugal University of Minho Voula (S.J.) Pantazopoulou Canada The Lassonde Faculty of Engineering, York University Sofia Ribeiro Portugal Laboratório Nacional de Engenharia Civil, LNEC Theodoros Rousakis Greece Democritus University of Thrace Norbert Randl Austria Carinthia Univ. of Applied Sciences Christoph Czaderski-Forchmann Switzerland EMPA, Structural Engineering Mark Verbaten Netherlands ABT bv Jan Laco United Kingdom Atkins Thanasis Triantafillou Greece University of Patras Maurizio Guadagnini United Kingdom University of Sheffield Renata Kotynia Poland Lodz University of Technology Eva Oller Ibars Spain Technical University of Catalonia José Paul Costa Portugal STAP, SA Raquel Fernandes Paula Portugal STAP, S.A. António Costa Portugal Instituto Superior Técnico Emmanuel Ferrier France Université Lyon 1 Eftychia Apostolidi Austria University BOKU (University ofNatural Resources and Life Sciences) Xavier Hallopeau France SECCO Corrosion Consulting Jakob Kunz Liechtenstein Hilti AG Liberato Ferrara Italy Politecnico di Milano Francesco Bencardino Italy University of Calabria Véronique Bouteiller France IFSTTAR Alejandro Mateos Argentina National University of Northwest of Buenos Aires - UNNOBA Eduardo Julio Portugal Instituto Superior Tecnico, Universidade de Lisboa
TG8.4 - Life cycle cost (LCC) - Design life and/or replacement cycle
The work of TG8.4 comprises the preparation of a state-of-the-art report on LCC including the following:
- A flow chart for life cycle cost analyses;
- Examples and/or case studies concerning life cycle cost evaluations of design strategies,including narratives and consequences of the favoured strategy;
- A risk analysis covering costs and benefits;
- Identification of hazard scenarios (weak points);
- Discussion on the value added by the LCC analyses including:
- Birth Certificate;
- Reference to relevant fib documents.
First name Last name Country Affiliation Irina Stipanovic Oslakovic Netherlands University of Twente Anders Ole Stubbe Solgaard Denmark Cowi A/S Zila Rinaldi Italy University of Rome “Tor Vergata” Alfred Strauss Austria Univ. Bodenkultur Vienna David Fernández-Ordóñez Switzerland fib Frank Papworth Australia BCRC José Campos e Matos Portugal University of Minho Joan Casas Rius Spain Tech. Univ. of Catalunya, UPC-BarcelonaTech Hiroshi Akiyama Japan Tokyo Soil Research CO., LTD Stefania Arangio Italy Sapienza University of Rome Colin Caprani Australia Monash University Amr El-Dieb United Arab Emirates United Arab Emirates University Rui Miguel Ferreira Finland VTT Techn. Research Centre of Finland Dan Frangopol United States Lehigh University Joost Gulikers Netherlands Rijkswaterstaat Centre for Infrastructure Poul Linneberg Denmark COWI A/S Snezana Masovic Serbia University of Belgrade Drahomir Novak Czech Republic Technical University of Brno Nader M Okasha Saudi Arabia University of Hail, Hayil Xin Ruan China Tongji University Mohammed Safi Sweden Royal Institute of Technology (KTH) Mauricio Sanchez-Silva Colombia Universidad de Los Andes M. Semih Yücemen Turkey Middle East Technical University Ali Akbar Nezhad Australia UNSW Australia Sandra Škarić Palić Croatia Infraplan
TG8.8 - Design approaches
Throughout durability design there are a number of common inputs that should be handled in a consistent approach, e.g. reliability, cracking, exposure risk assessment, verification approaches.
This Task Group will maintain approaches that are consistent across different materials and durability design approaches consistency and provide liaison with other Commissions to ensure consistency across all aspects of Model Code.
- This Task Group shall investigate various aspects that have a common impact on modelling of deterioration mechanisms but the TG is not directly involved in the mechanisms or materials.
- Many of these items are fundamental to all aspects of structural design and cannot be considered durability issues alone. However, the issues are key to durability design.
The work in TG8.8 is currently carried out in the following Working Groups:
- TG8.8 WG1 - Durability Planning – Convener: Rodney Paull
- TG8.8 WG2 - ULS verification under chloride- and carbonation-induced deterioration – Convener: Robby Caspeele
- TG8.8 WG3 - Exposure Zones – Convener: Joanitta Ndawula
- TG8.8 WG4 - Eco-efficient concretes and clinker efficient binders – Convener: Stefanie Von Greve-Dierfeld
First name Last name Country Affiliation Philipp Bamforth United Kingdom Construction Consultancy Jonathan Mai-Nhu France CERIB Raymond Ian Gilbert Australia School of Civil and Environmental Engineering Konstantin Kovler Israel Technion - Israel Institute of Technology Stefanie Von Greve-Dierfeld Switzerland TFB Technology and Research for Concrete Structures Steinar Helland Norway S Helland Konsult François Toutlemonde France Université Gustave Eiffel David Fernández-Ordóñez Switzerland fib Lionel Linger France Vinci Construction Grand Projets Frank Papworth Australia BCRC Michael Bartholomew United States CH2M HILL Hans-Dieter Beushausen South Africa University of Cape Town Stuart Curtis Australia RTR Bridge Construction Services Jean Michel Torrenti France Univ Gustave Eiffel Agnieszka Bigaj-van Vliet Netherlands TNO - Buildings, Infrastructures and Maritime Claus Nielsen Denmark DTI - Danish Technological Institute
TG8.9 - Deterioration Mechanisms Related to Corrosion
TG8.9 will investigate models for the following deterioration processes: Rebar Corrosion Initiation; Rebar Corrosion Propagation; Abrasion, Erosion and Cavitation; Freeze Thaw Attack; Leaching; Water and Water Vapour Migration and Chemical Attack.
In MC2010 and Bulletin 34, some of these mechanisms have only loosely defined models and some have no models. MC2010 also has limited advice for exposure classes, performance tests, deemed to satisfy requirements and avoidance approaches.
- This Task Group shall investigate prediction tools (models)
- Derive revised design rules, which ensure sufficient durability close to broadly accepted reliability levels of limit states identified in TG8.8 and to be considered in TG8.9 and TG3.4
- The TG will provide specific input into MC2020 but is expected to continue as a COM8 TG to continuously develop the solutions for the issues listed.
The work in TG8.9 is currently carried out in the following Working Groups:
- TG8.9 WG1 - Corrosion Initiation – Convener: Amir Rahimi
- TG8.9 WG2 - Corrosion Propagation – Convener: Carmen Andrade
- TG8.9 WG3 - Chloride threshold – Conveners: Frank Papworth, Federica Lollini
- TG8.9 WG4 - Durability of steel Fiber reinforced Concrete (SFRC) – Convener: David Gardiner
- TG8.9 WG5 - Durability of prestressing steels – Convener: Brett Pielstick
First name Last name Country Affiliation Carmen Andrade Spain Centre Internacional de Mètodes Numèrics en l’Ènginyeria (CIMNE) David Fernández-Ordóñez Switzerland fib Carola K. Edvardsen Denmark Cowi AS Christoph Gehlen Germany TUM School of Engineering and Design Steinar Helland Norway S Helland Konsult Stefanie Von Greve-Dierfeld Switzerland TFB Technology and Research for Concrete Structures Amir Rahimi Germany Bundesanstalt für Wasserbau Philipp Bamforth United Kingdom Construction Consultancy Michael Bartholomew United States CH2M HILL Edgar Bohner Finland - Véronique Bouteiller France IFSTTAR Rui Miguel Ferreira Finland VTT Techn. Research Centre of Finland Nuno Ferreira United Kingdom Arup Joost Gulikers Netherlands Rijkswaterstaat Centre for Infrastructure Fritz Hunkeler Switzerland TFB AG Akio Kasuga Japan Sumitomo Mitsui Construction Co., Ltd Lionel Linger France Vinci Construction Grand Projets Federica Lollini Italy Politecnico di Milano Koichi Maekawa Japan Yokohama National University Jonathan Mai-Nhu France CERIB Fabrizio Moro Switzerland - Claus Nielsen Denmark DTI - Danish Technological Institute Maria Nilsson Sweden Luleå Universitetsbibliotek Mike Otieno South Africa Wits Frank Papworth Australia BCRC Michael Raupach Germany RWTH Aachen University Jean Michel Torrenti France Univ Gustave Eiffel François Toutlemonde France Université Gustave Eiffel Sylvia Kessler Germany Helmut-Schmidt-University/ University of the Federal Armed Forces Hamburg Qing-feng Liu China Shanghai Jiao Tong University Muhammad Imran Rafiq United Kingdom University of Brighton Tamon Ueda China Shenzhen University Yi Wang China Central South University Jose Pacheco United States MJ2 Consulting Muhammed Basheer United Kingdom University of Leeds Manu Santhanam India Department of Civil Engineering
TG8.11 - Testing and Monitoring
Durability design of concrete structures may incorporate a number of performance-based requirements depending on the deterioration mechanisms and exposure conditions to consider. While exposure definitions and performance-based requirements are dealt with in other fib TG’s, well documented test procedures for relevant materials properties are needed for support of the durability design and subsequent quality assurance. This includes well-founded probabilistic definitions for those properties.
The objective of Task Group 8.11 is to provide guidance on test methods and corresponding acceptance criteria and testing frequencies concerning quality assurance of concrete production. Furthermore, the objective is to link performance-requirements of concrete as yielded from durability design with the execution. For the latter, all stages of concrete production, i.e. pre-testing in the laboratory, trial testing in laboratory and on-site, and testing of running production are considered.
The work in TG8.11 is currently carried out in the following Working Groups:
- TG8.11 WG1 - Testing New Concrete – Convener: Carola Edvardsen
- TG8.11 WG2 - Testing Old Concreten – Convener: Roberto Torrent
- TG8.11 WG3 - Monitoring of Concrete – Convener: Joan Casas Rius
First name Last name Country Affiliation Sarah Schmiedel Germany Universität (Campus Süd) Institut für Massivbau und Baustofftechnologie Federica Lollini Italy Politecnico di Milano Michael Vogel Germany Karlsruher Institut für Technologie (KIT) - Universität (Campus Süd) Anders Ole Stubbe Solgaard Denmark Cowi A/S Carmen Andrade Spain Centre Internacional de Mètodes Numèrics en l’Ènginyeria (CIMNE) David Fernández-Ordóñez Switzerland fib Frank Dehn Germany KIT Karlsruher Institut für Technologie Carola K. Edvardsen Denmark Cowi AS Lionel Linger France Vinci Construction Grand Projets Hans-Dieter Beushausen South Africa University of Cape Town Stefanie Von Greve-Dierfeld Switzerland TFB Technology and Research for Concrete Structures Amir Rahimi Germany Bundesanstalt für Wasserbau Doug Hooton Canada University of Toronto Alfred Strauss Austria Univ. Bodenkultur Vienna Roberto Torrent Switzerland Quali- Ti-Mat Sagl Fabrizio Moro Switzerland - Ahmad Khartabil United Arab Emirates Transgulf Readymix Concrete Co. Peng Zhang China Qingdao University of Technology Ueli Angst Switzerland ETH Zurich
TG8.12 - Deterioration mechanisms related to other phenomena
The work in TG8.12 is currently carried out in the following Working Groups:
- TG8.12 WG1 - Freeze-Thaw – Convener: Suraneni
- TG8.12 WG2 - Abrasion/erosion and cavitation – Convener: Thomas Vogel
- TG8.12 WG3 - Chemical and biogenic attack, and leaching – Convener: Bertron
- TG8.12 WG4 - Internal Attacks (ASR/DEF) – Convener: Rajabipour
First name Last name Country Affiliation Manu Santhanam India Department of Civil Engineering David Fernández-Ordóñez Switzerland fib