Effective methodology of sustainability assessment of concrete mixtures
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ORIGINAL ARTICLE
Effective methodology of sustainability assessment of concrete mixtures Petr Konecˇny´ . Pratanu Ghosh . Kristy´na Hrabova´ . Petr Lehner Brˇetislav Teply´
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Received: 14 September 2019 / Accepted: 14 July 2020 RILEM 2020
Abstract Sustainability approach is a key conceptual principle to be considered in cement and concrete production all around the world. This study aims to enhance the methodology of a versatile effective sustainability assessment in a simple manner. The feasibility of proposed methodology is demonstrated on selected field application related to reinforced concrete bridge deck slabs where strength and durability are of prime interest. Various high-performance concrete (HPC) mixtures suitable for effective utilization in science and practice are selected as an example of the sustainability evaluation. The focus is paid to a P. Konecˇny´ (&) P. Lehner Department of Structural Mechanics, Faculty of Civil Engineering, VSB – Technical University of Ostrava, Ostrava, Czech Republic e-mail: [email protected] P. Lehner e-mail: [email protected] P. Ghosh Department of Civil and Environmental Engineering, California State University, Fullerton, CA, USA e-mail: [email protected] K. Hrabova´ B. Teply´ Institute of Structural Mechanics, Faculty of Civil Engineering, Brno University of Technology, Brno, Czech Republic e-mail: [email protected] B. Teply´ e-mail: [email protected]
complex sustainability assessment considering major important indicators: performance, durability, ecocosts and concrete mixtures costs and they are combined efficiently into one complex indicator applied at the early stage of design process. The enhancement in the form of such a general approach allows the consideration of these indicators and its normalization with the reference values is proposed. The results of experimental investigation on twentyfour various HPC mixtures are utilized to demonstrate the feasibility of proposed approach considering concrete’s compressive strength and its resistance against chloride-induced corrosion to serve as both performance and durability indicator. The results indicate the sustainability level of concrete mixtures and demonstrate the optimum possible choice of concrete mixtures with best performance/ecocosts/durability and economy trade off in the view of sustainability assessment. Keywords Sustainability High-performance concrete Chloride diffusion CO2 emission Life cycle assessment Service life
1 Introduction According to UN Resolution 70/1: Transforming our world: the 2030 Agenda for Sustainable Development, there are specified 17 Sustainable Development Goals
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(SDGs) with 169 associated targets which are integrated and balance three dimensions or pillars of sustainable development, i.e. economic, social and environmental. These goals came into effect on 1 January 2016 and guide the actions up to 2030. It is expected, that all stakeholders will work to implement the SDG
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