Avaliação do Ciclo de Vida Cradle-to-Gate de traços de concretos autoadensáveis com incorporação de resíduos e subprodutos industriais

• Ano de defesa: 2016
• Autor(a) principal: Coelho, Felipe Zanellato
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Engenharia Civil; Centro Tecnológico; UFES; Programa de Pós-Graduação em Engenharia Civil
• Palavras-chave em Português: Self-compacting concrete (SCC); Life Cycle Assessment (LCA); Wastes; Industrial byproducts; SimaPro; Environmental impact; Concretos Autoadensáveis (CAA); Avaliação do ciclo de vida (ACV); Resíduos; Subprodutos Industriais; Impacto ambiental; Concreto; Ciclo de vida do produto; Ciclo de vida do produto - Aspectos ambientais; Resíduos industriais; Engenharia Civil; 624
• Link de acesso: http://repositorio.ufes.br/handle/10/9471

Several studies evaluate the technical performance of incorporating wastes and industrial by-products into concrete mixtures (eco-concrete, green concrete, ecological concrete). However, to decide which mixture has the lowest environmental load is necessary to make a complete analysis of its entire life cycle. The life cycle assessment (LCA) is a methodology for assessing the potential environmental impacts and resources used throughout a product's life cycle. Thus, the management of environmental impacts is approached from the extraction of raw materials to stages of production, use, disposal and recycling. Therefore, the aim of this work is to associate the production of self-compacting concrete (SCC) with the incorporation of wastes and industrial by-products with the concept of life cycle, using the LCA methodology to make comparisons of mixtures in a specific scenario. For such, this research used green SCC's mixtures, with technical performances proved in scientific articles, in which the environmental performance was not analyzed. To evaluate the environmental performance, the mixtures were divided into 3 strength classes (1A, 1B and 2) and analyzed with the software SIMAPRO, IMPACT 2002+ impact assessment method, Ecoinvent database and functional unit of 1 m3 , with the cradle-to-gate system boundaries. The results show that in the three strength classes analyzed the damage categories most affected were Human Health, Climate Change and Energy Resources, as a result of high emissions of inorganic particles that affect human health, greenhouse gas emissions and consumption of non-renewable energy, respectively. In summary, the green SCC’s have significant environmental gains that can help minimize the problems of waste management, reduce the depletion of natural resources and promote green consumption.