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Application of the desirability function for the development of new composite eco-efficiency indicators for concrete

2021; Elsevier BV; Volume: 40; Linguagem: Inglês

10.1016/j.jobe.2021.102374

2352-7102

Ariel Miranda de Souza, Gustavo Emílio Soares de Lima, Gustavo Henrique Nalon, Márcia Maria Salgado Lopes, André Luís de Oliveira Júnior, Gustavo José Rodrigues Lopes, Marcell José de Andrade Olivier, Leonardo Gonçalves Pedroti, José Carlos Lopes Ribeiro, José Maria Franco de Carvalho,

Environmental Impact and Sustainability

Studies have been developed to evaluate the construction industry environmental impacts based on eco-efficiency indicators. This work aims to complement impact assessment methods currently used in the literature with the application of the statistical desirability function, and create novel desirability-based indicators to evaluate the environmental and mechanical performance of concrete production. Six new eco-efficiency indicators associated with different impact categories addressed by international, national, and regional agreements in the sustainability area were proposed: Energy Impacts Reduction (EIR); Material Impacts Reduction (MIR); Greenhouse Gases Reduction (GGR); Ecotoxicity Potential Reduction (EPR); Acidification, Eutrophication, and Ozone Abatement (AEO); and Eco-efficiency Potential (EEP). A case study was developed to carry out a life cycle assessment (LCA) of conventional and sustainable concretes, apply the individual desirability methodology and calculate the novel indicators. The application of the desirability function was able to adjust and combine LCA midpoint or endpoint characterization factors and provide very flexible and intuitive desirability-based indicators of concrete eco-efficiency. The desirability-based indicators developed in this work allow assessing the eco-efficiency of cement-based materials in a statistical methodology that offers synthetic results that are easy to understand by the end-user and have great potential for practical application in decision-making processes.