Concrete is the most used material for the construction of buildings and civil structures. Concrete and concrete structures should contribute to the development of a sustainably built environment in a socially, environmentally and economically responsible manner. There is no general methodology for sustainability design and assessment of concrete structures covering all important sustainability aspects and all life cycle phases from acquisition of materials, through production of concrete and concrete components, construction, operation of structure, up to demolition and recycling.
Scope and objective of technical work
The main scope of Commission 7 (COM7) is to develop a strategy as to how to incorporate sustainability issues into the design, construction, operation and demolition of concrete structures. Design concepts of concrete structures should be based on a sustainability framework considering environmental, economic and social aspects. The main focus should be on: the reduction of CO2 emissions from concrete production, the reduction of energy use for construction and the operation of buildings (including thermal mass effect), improving the performance quality of the internal environment (acoustics, thermal well-being, etc.), the reduction of waste to landfill, the development of sustainability metrics and data requirements needed for Environmental Product Declarations and other quality assessment, recycling and use of recycled materials (incl. recycled concrete), resiliency of structures, etc. The goal is to prepare a framework and data for the sustainable design of concrete structures to be implemented in the new fib Model Code MC2020.
|First name||Last name||Country||Affiliation|
|Frank||Dehn||Germany||MFPA Leipzig GmbH|
|Akio||Kasuga||Japan||Sumitomo Mitsui Construction Co.Ltd.|
|Boudewijn||Piscaer||Netherlands||Univerde Agencies sarl|
|Andrea||Prota||Italy||Universita di Napoli Federico II|
|Jan||Desmyter||Belgium||Belgian Building Research Institute|
|Domenico||Asprone||Italy||University of Naples Federico II|
|Fulvio||Parisi||Italy||University of Naples Federico II|
|Ruben||Borg||Malta||University of Malta|
|Peter||Jäger||Switzerland||Peter Jäger Partner Bauingenieure AG|
|Takafumi||Noguchi||Japan||University of Tokyo|
|Petr||Stepanek||Czech Republic||Brno University of Technology|
|Dong-Uk||Choi||South Korea, Republic of||Hankyong National University|
|Harald||Müller||Germany||Karlsruhe Institute of Technology|
|Albert||de la Fuente Antequera||Spain||Universidad Polytecnica de Catalunya|
|Alena||Kohoutkova||Czech Republic||Czech Technical University - CVUT|
|Julie||Buffenbarger||United States||National Ready Mixed Concrete Association|
|Petr||Hajek||Czech Republic||Czech Technical University in Prague|
- TG7.1 - Sustainable Concrete - general framework
- TG7.2 - Application of environmental design to concrete structures
- TG7.3 - Concrete made with recycled materials – Life cycle perspective
- TG7.4 - Sustainable civil structures
- TG7.5 - Environmental product declarations (EPD) and equivalent performance of concrete
- TG7.6 - Resilient structures
- TG7.7 - Sustainable concrete masonry components and structures
TG7.1 - Sustainable Concrete - general framework
Affordability, availability and variability of concrete in connection with strength and durability has made concrete the most used construction material in the world. Use of advanced concrete structures represents important potential in the way towards sustainability of built environment. Concrete and concrete structures should contribute to the development of a sustainably built environment in a socially, environmentally and economically responsible manner.
Definition of a basic framework of sustainable concrete design and an assessment considering environmental, economic and social aspects. The framework will focus on different types of concrete structures - buildings, bridges, roads, water structures etc. and their construction and operation in various specific regional conditions. The entire life cycle will be considered.
First name Last name Country Affiliation - - - - David Fernández-Ordóñez Switzerland fib Akio Kasuga Japan Sumitomo Mitsui Construction Co.Ltd. Ctislav Fiala Czech Republic - Kim Van Tittelboom Belgium University of Ghent Tereza Pavlů Czech Republic Czech Technical University in Prague Jan Desmyter Belgium Belgian Building Research Institute Ruben Borg Malta University of Malta Simone Stürwald Switzerland Private Michael Haist Germany Leibniz Universität Hannover(KIT) Han Lie Indonesia - Senot Sangadji Indonesia Universitas Sebelas Maret Petr Stepanek Czech Republic Brno University of Technology Petr Hajek Czech Republic Czech Technical University in Prague Albert de la Fuente Antequera Spain Universidad Polytecnica de Catalunya Jaime Gálvez Ruiz Spain Universidad Politecnica de Madrid
TG7.2 - Application of environmental design to concrete structures
fib Bulletin 47, Environmental design of concrete structures – general principles, prepared by a former task group, covers the life cycle of concrete structures including manufacturing of materials, transportation, execution, maintenance, demolition, disposal and recycling. In an actual concrete structure, however, the requirements for structural performance and durability performance in addition to environmental performance must be satisfied in a well-balanced manner.
The scope of the activities of the task group is to show application procedures of environmental design to concrete structures to promote sustainable construction. Since the quantitative evaluation method of environmental aspects in the design and construction of concrete structures is still under development, a document to facilitate it, such as a manual, will be required to foster the incorporation of environmental aspects into the design and construction. Based on this document, various case studies will be conducted.
First name Last name Country Affiliation - - - -
TG7.3 - Concrete made with recycled materials – Life cycle perspective
The objective of TG7.3 is to collect statistical data on concrete production, waste generation and those related to resource recycling in the world. The objective also includes an investigation of:
- the properties of recycled materials for concrete made from waste and by-products,
- the properties of concrete with recycled materials and their applications
- concrete recycling technologies, and
- the environmental impact caused during recycling of concrete waste.
Finally, TG7.3 will publish a state-of-the-art report on concrete with recycled materials such as demolished concrete, ceramics, glass, ashes, organic waste, etc. and to propose the ideal future for recycling concrete resources considering aspects of durability and recyclability of concrete, and minimising the environmental impact in the life cycle.
First name Last name Country Affiliation - - - - Tereza Pavlů Czech Republic Czech Technical University in Prague David Dunne United Kingdom AECOM Yamei Zhang China Southeast University Jan Desmyter Belgium Belgian Building Research Institute Masaki Tamura Japan Kogakuin University Takafumi Noguchi Japan University of Tokyo David Fernández-Ordóñez Switzerland fib Dong-Uk Choi South Korea, Republic of Hankyong National University Petr Hajek Czech Republic Czech Technical University in Prague Ruben Borg Malta University of Malta - - - -
TG7.4 - Sustainable civil structures
The different phases of a civil structure project, from planning to end of service life, demand different methodologies. The phases include the feasibility phase, conceptual design, detailed design, construction, operation and maintenance and end of life/re-use. In the feasibility phase, for instance, different alignments are possible as well as different structural solutions (different tunnel and bridge solutions). The possibility of influencing the construction costs and environmental impact lies mainly in the feasibility phase.
The objective of the task group is to develop a methodology for optimising the design process leading to lower life cycle cost and more environmentally friendly civil structures. The way of doing this is to apply life cycle costs and life cycle assessment tools in the civil structure design process.
First name Last name Country Affiliation - - - - Iva Broukalova Czech Republic - Marek Węglorz Poland - Simone Stürwald Switzerland Private Michael Haist Germany Leibniz Universität Hannover(KIT) David Fernández-Ordóñez Switzerland fib Alena Kohoutkova Czech Republic Czech Technical University - CVUT
TG7.5 - Environmental product declarations (EPD) and equivalent performance of concrete
The objective of Task Group 7.5 will be two-fold:
- to recommend preferred approaches (road maps) for establishing "equivalent performance" of low environmental impact concrete typically containing high amounts of supplementary cementitious materials and therefore in terms of composition falls outside the prescriptions found in existing standards/regulations. By equivalent performance is understood that the concrete has acceptable production, structural and durability properties for its intended use. Clear road maps for establishing equivalent performance are a prerequisite and will likely act as a catalyst for increased use of such lower environmental impact concrete compositions to the benefit of the global community.
- to establish best available technologies for Environmental Product Declarations (EPDs) on concrete compositions (mix designs). EPDs are an emerging means, which, if performed on a common basis, allow a comparison of the environmental impact of different concrete compositions/products. As such, EPDs may be used by the consumer (end-user) to make a qualified decision concerning the choice of concrete, e.g. as requirements to the environmental performance can be verified and therefore also specified.
First name Last name Country Affiliation - - - - Frank Dehn Germany MFPA Leipzig GmbH Julie Hodkova Czech Republic Czech Technical University in Prague Costantino Menna Italy University of Naples Federico II Boudewijn Piscaer Netherlands Univerde Agencies sarl Ladin Camci United Kingdom CARES Andrea Prota Italy Universita di Napoli Federico II Jan Desmyter Belgium Belgian Building Research Institute Domenico Asprone Italy University of Naples Federico II Dorthe Mathiesen Denmark Danish Technological Instute Christoph Müller Germany VDZ gGmbH Michael Haist Germany Leibniz Universität Hannover(KIT) Peter Jäger Switzerland Peter Jäger Partner Bauingenieure AG Takafumi Noguchi Japan University of Tokyo David Fernández-Ordóñez Switzerland fib Dong-Uk Choi South Korea, Republic of Hankyong National University Harald Müller Germany Karlsruhe Institute of Technology
TG7.6 - Resilient structures
The objective of this task group is to highlight criticalities in current structural design practice and to provide fundamentals to address the design, the maintenance and the retrofit principles towards resilient structures in sustainable urban systems, and more broadly, in view of smart cities.
TG7.6 aims to develop guidelines to help diverse stakeholders involved within such processes to face resilience issues through a multiscale approach.
These guidelines will approach resilience issues according to a multiscale approach, starting from the single building scale. Structural design principles are rethought from the point of view of the practicality, reparability, robustness and serviceability in the aftermath of a catastrophe. Particularly, performance goals are recognised to define new resilience-based limit states, in order to enhance disaster preparedness and response of urban structures. Innovative and novel standards and metrics are implemented within the guidelines, as a support to the development of post-event strategic intervention, protection and response technologies and recovery strategies.
First name Last name Country Affiliation - - - - Michael Faber Denmark Aalborg University Marco Savola Italy University of Bologna Konstantinos Tsavdaridis United Kingdom Institute of Resilient Infrastructure Anna Bozza Italy University of Naples Federico II Fatemeh Jalayer Italy University of Naples Federico II Bozidar Stojadinovic Switzerland ETH Zurich Jochen Köhler Norway NTNU Bernardino Chiaia Italy Polytechnic of Turin Domenico Asprone Italy University of Naples Federico II Fulvio Parisi Italy University of Naples Federico II David Fernández-Ordóñez Switzerland fib Senot Sangadji Indonesia Universitas Sebelas Maret Marco di Prisco Italy Politecnico di Milano Petr Hajek Czech Republic Czech Technical University in Prague Izuru Takewaki Japan Kyoto University
TG7.7 - Sustainable concrete masonry components and structures
Current requirements on energy efficiency, building comfort and sustainability have stimulated a growing use of new concrete technologies for construction and retrofit of (i) load-bearing walls in unreinforced, reinforced and confined masonry buildings and (ii) cladding, infill and partition walls in reinforced concrete or steel framed building structures. In that respect, researchers, designers, construction companies and building owners have paid special attention to the use of autoclaved aerated concrete (AAC) and light-weight aggregate concrete (LWAC) with recycled waste aggregates for production of innovative concrete masonry units (CMUs). It is also emphasised that CMUs may be formulated with special aggregates to produce specific colours or textures for finish use.
The scope and objective of TG7.7 will move in that direction in order to develop a general methodology for construction, design, assessment and retrofit of concrete masonry panels and walls.
First name Last name Country Affiliation - - - - John Forth United Kingdom University of Leeds Manicka Dhanasekar Australia Queensland University of Technology Elena Michelini Italy University of Parma Daniele Ferretti Italy University of Parma Matija Gams Slovenia University of Ljubljana Ahmad Hamid United States Drexel University Guido Magenes Italy University of Pavia Guilherme Parsekian Brazil Federal University of São Carlos Andrea Penna Italy University of Pavia Graça Vasconcelos Portugal University of Minho Andrea Prota Italy Universita di Napoli Federico II Domenico Asprone Italy University of Naples Federico II Fulvio Parisi Italy University of Naples Federico II David Fernández-Ordóñez Switzerland fib Jason Ingham New Zealand The University of Auckland Jaime Gálvez Ruiz Spain Universidad Politecnica de Madrid