Sustainability approach is a key conceptual principle to be considered in all human activities including design, production, construction, operation, maintenance, repair and demolition of any building or civil engineering work forming the built environment. The crucial importance of sustainability consideration within all life stages of any concrete structure follows from the amount of produced concrete, resulting in the fact that concrete is the most widely used construction material in the world. Thus, the optimization of concrete structures based on a wide range of sustainability issues represents a challenge and an important contribution to the solution of a global goal focusing to the sustainable development of life on the Earth.
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|
|Dehn||Frank||Germany||KIT Karlsruher Institut für Technologie|
|Kasuga||Akio||Japan||Sumitomo Mitsui Construction Co.Ltd.|
|Piscaer||Boudewijn||Netherlands||Univerde Agencies sarl|
|Prota||Andrea||Italy||Universita di Napoli Federico II|
|Desmyter||Jan||Belgium||Belgian Building Research Institute|
|Asprone||Domenico||Italy||University of Naples Federico II|
|Parisi||Fulvio||Italy||University of Naples Federico II|
|Borg||Ruben||Malta||University of Malta|
|Jäger||Peter||Switzerland||Peter Jäger Partner Bauingenieure AG|
|Noguchi||Takafumi||Japan||University of Tokyo|
|Stepanek||Petr||Czech Republic||Brno University of Technology|
|Müller||Harald||Germany||Karlsruhe Institute of Technology|
|de la Fuente Antequera||Albert||Spain||Universidad Polytecnica de Catalunya|
|Negro||Paolo||Italy||European Commission, Joint Research Centre (JRC)|
|Kohoutkova||Alena||Czech Republic||Czech Technical University - CVUT|
|Buffenbarger||Julie||United States||National Ready Mixed Concrete Association|
|Hajek||Petr||Czech Republic||Czech Technical University in Prague|
|Menna||Costantino||Italy||University of Naples Federico II|
- TG7.1 - Sustainable Concrete - general framework
- 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 Fernández-Ordóñez David Switzerland fib Kasuga Akio Japan Sumitomo Mitsui Construction Co.Ltd. Fiala Ctislav Czech Republic Czech Technical Univ. in Prague Van Tittelboom Kim Belgium University of Ghent Pavlů Tereza Czech Republic Czech Technical University in Prague Desmyter Jan Belgium Belgian Building Research Institute Borg Ruben Malta University of Malta Stürwald Simone Switzerland Private Haist Michael Germany Leibniz Universität Hannover(KIT) Han Aylie Indonesia Diponegoro University Sangadji Senot Indonesia Universitas Sebelas Maret Stepanek Petr Czech Republic Brno University of Technology Hajek Petr Czech Republic Czech Technical University in Prague de la Fuente Antequera Albert Spain Universidad Polytecnica de Catalunya Gálvez Ruiz Jaime Spain Universidad Politecnica de Madrid
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 Pavlů Tereza Czech Republic Czech Technical University in Prague Dunne David United Kingdom Arcadis Consulting (UK) Limited Zhang Yamei China Southeast University Desmyter Jan Belgium Belgian Building Research Institute Tamura Masaki Japan Kogakuin University Noguchi Takafumi Japan University of Tokyo Fernández-Ordóñez David Switzerland fib Choi Dong-Uk Korea, Republic of Hankyong National University Hajek Petr Czech Republic Czech Technical University in Prague Borg Ruben Malta University of Malta Xiao Jianzhuang China Tongji University Choi Dong-Uk Korea, Republic of Hankyong National University
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 Broukalova Iva Czech Republic Czech Techn. Univ. of Prague - CVUT Węglorz Marek Poland Katedra Inżynierii Budowlanej Stürwald Simone Switzerland Private Haist Michael Germany Leibniz Universität Hannover(KIT) Fernández-Ordóñez David Switzerland fib Kohoutkova Alena 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 Dehn Frank Germany KIT Karlsruher Institut für Technologie Hodkova Julie Czech Republic Czech Technical University in Prague Menna Costantino Italy University of Naples Federico II Piscaer Boudewijn Netherlands Univerde Agencies sarl Camci Ladin United Kingdom CARES Prota Andrea Italy Universita di Napoli Federico II Desmyter Jan Belgium Belgian Building Research Institute Asprone Domenico Italy University of Naples Federico II Mathiesen Dorthe Denmark Danish Technological Instute Müller Christoph Germany VDZ gGmbH Haist Michael Germany Leibniz Universität Hannover(KIT) Jäger Peter Switzerland Peter Jäger Partner Bauingenieure AG Noguchi Takafumi Japan University of Tokyo Fernández-Ordóñez David Switzerland fib Choi Dong-Uk Korea, Republic of Hankyong National University Müller Harald Germany Karlsruhe Institute of Technology Choi Dong-Uk Korea, Republic of Hankyong National University
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 Faber Michael Denmark Aalborg University Savoia Marco Italy University of Bologna Tsavdaridis Konstantinos United Kingdom Institute of Resilient Infrastructure Bozza Anna Italy University of Naples Federico II Jalayer Fatemeh Italy University of Naples Federico II Stojadinovic Bozidar Switzerland ETH Zurich Köhler Jochen Norway NTNU Chiaia Bernardino Italy Polytechnic of Turin Asprone Domenico Italy University of Naples Federico II Parisi Fulvio Italy University of Naples Federico II Fernández-Ordóñez David Switzerland fib Sangadji Senot Indonesia Universitas Sebelas Maret Hajek Petr Czech Republic Czech Technical University in Prague Takewaki Izuru Japan Kyoto University Noroozinejad Ehsan Iran, Islamic Republic of Graduate University of Advanced Technology di Prisco Marco Italy Politecnico di Milano
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 Forth John United Kingdom University of Leeds Dhanasekar Manicka Australia Queensland University of Technology Michelini Elena Italy University of Parma Ferretti Daniele Italy University of Parma Gams Matija Slovenia University of Ljubljana Hamid Ahmad United States Drexel University Magenes Guido Italy University of Pavia Parsekian Guilherme Brazil Federal University of São Carlos Penna Andrea Italy University of Pavia Vasconcelos Graça Portugal University of Minho Prota Andrea Italy Universita di Napoli Federico II Asprone Domenico Italy University of Naples Federico II Parisi Fulvio Italy University of Naples Federico II Fernández-Ordóñez David Switzerland fib Ingham Jason New Zealand The University of Auckland Gálvez Ruiz Jaime Spain Universidad Politecnica de Madrid