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      Aplicação da Avaliação do Ciclo de Vida na análise de impactos ambientais de materiais de construção inovadores: estudo de caso da pegada de carbono de clínqueres alternativos Translated title: Application of Life Cycle Assessment in the evaluation of the environmental impacts of innovative construction materials: case study of the carbon footprint of alternative clinkers

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          Abstract

          O setor da construção civil é reconhecido como um grande consumidor de recursos, e responsável por diversas emissões que causam impactos substanciais ao ambiente. Muitos destes impactos estão diretamente relacionados à produção de materiais de construção. Por isso, mundialmente cresce a tendência de se propor o uso de materiais de construção inovadores, que considerem a mitigação de seus impactos ambientais no processo produtivo. Para avaliar todos os impactos ambientais relacionados a estes materiais, é necessário que se avalie todas as fases de seu ciclo de vida. Para isso, propõe-se a aplicação da Avaliação do Ciclo de Vida (ACV), metodologia internacionalmente consagrada na avaliação ambiental de produtos, processos e serviços, sendo também normatizada para o cálculo de declarações ambientais de produtos da construção civil. Sabe-se que a produção cimento emite quantidade pronunciadas de gases do efeito estufa. Por isso, neste trabalho, a ACV é aplicada para o cálculo da pegada de carbono de clínqueres alternativos produzidos em laboratório. Os resultados obtidos demonstram uma redução em 22% da pegada de carbono do clínquer alternativo em relação ao clínquer Portland, indicando as etapas do processo produtivo que mais colaboram para estes valores. Ainda, evidencia-se a ampla aplicabilidade da ferramenta ACV ao setor da construção.

          Translated abstract

          It is widely acknowledged that the construction industry is a majorconsumer of resources and is responsible for emissions that cause substantial environmental impacts. Many of those impacts are directly related to the production of building materials. Consequently, the use of innovative building materials that consider the mitigation of environmental impacts through their production process has become a worldwide trend. In order to evaluate all the environmental impacts related to these materials, it is necessary to assess allthe life cycle stages. In order to do that, we propose the application of Life Cycle Assessment (LCA), an internationally acknowledged method for the environmental evaluation of products, processes and services, which is also standardized for the environmental product declaration of construction products. Cement production is known to emit significant amounts of greenhouse gases. Hence, in this paper, LCA is applied to evaluate the carbon footprint of alternative, laboratory-produced clinker. The results show a 22% reduction in the carbon footprint of alternative clinker when compared to Portland clinker, indicating the stages in the production process that most contribute to these values. Moreover, the results indicatea wide range of applications of LCA in the construction industry.

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          Most cited references42

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          IMPACT 2002+: A new life cycle impact assessment methodology

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            A life-cycle assessment of Portland cement manufacturing: comparing the traditional process with alternative technologies

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              Sustainability in the construction industry: A review of recent developments based on LCA

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                Author and article information

                Journal
                ac
                Ambiente Construído
                Ambient. constr.
                Associação Nacional de Tecnologia do Ambiente Construído - ANTAC (Porto Alegre, RS, Brazil )
                1415-8876
                1678-8621
                December 2014
                : 14
                : 4
                : 7-20
                Affiliations
                [01] Porto Alegre RS orgnameUniversidade Federal do Rio Grande do Sul Brasil
                Article
                S1678-86212014000400002 S1678-8621(14)01400400002
                10.1590/S1678-86212014000400002
                93d6acc1-af7f-49d9-bb0f-0317c6c70102

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 15 March 2014
                : 11 September 2014
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 46, Pages: 14
                Product

                SciELO Brazil


                Avaliação do Ciclo de Vida,Pegada de Carbono,Clínquer alternativo,Clínquer Portland,Life-Cycle Assessment,Carbon Footprint,Alternative clinker,Portland clinker

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