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Avaliação dos impactos ambientais da reabilitação estrutural por análise de ciclo de vida
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 9.25 MB | Adobe PDF |
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Abstract(s)
A Análise do Ciclo de Vida (ACV) é uma ferramenta que permite avaliar os impactos ambientais de um
produto, processo ou serviço ao longo de todas as etapas do seu ciclo de vida, desde a extração de
matérias-primas até o descarte final. Neste estudo, a ACV foi aplicada aos edifícios tradicionais localizados
na região da cidade do Porto, em Portugal.
Para isso, foi realizada uma comparação entre uma abordagem de projeto considerando um trabalho
prévio de inspeção e diagnóstico estrutural (IDE) denominado como cenário 0, que consiste em uma
análise estrutural prévia com base nas reais necessidades do edifício que resulta em um projeto de reforço
estrutural. O outro cenário é fictício e representa a reconstrução dos pisos e cobertura em estrutura de
concreto armado, denominado como cenário 3.
Os resultados da ACV revelaram os principais impactos ambientais associados aos edifícios analisados,
entre eles, destacam-se o consumo de energia e o uso de materiais de construção com alto impacto
ambiental, por exemplo, o cimento. Dessa forma, foi possível concluir que um cenário de reconstrução
integral com recurso a estruturas de concreto armado, apresentam uma pior eficiência ambiental em
comparação com a metodologia utilizada no cenário 0, devido ao uso do concreto, cujo processo de
produção é uma fonte alta de emissões de gás carbônico (CO2).
Assim, foi possível identificar os principais impactos ambientais gerados caso as edificações fossem
executadas de acordo com o cenário 3. Este estudo demonstra os benefícios ambientais da metodologia
IDE que tem como consequência a materialização do relatório de inspeção e diagnóstico (RID), ambos os
métodos são aplicados pela empresa NCREP. Essas informações são relevantes para orientar a tomada de
decisões na construção e renovação de edifícios, visando reduzir o seu impacto ambiental e promover a
sustentabilidade.
Life Cycle Analysis (LCA) is a tool that allows you to evaluate the environmental impacts of a product, process or service throughout all stages of its life cycle, from the extraction of raw materials to final disposal. In this study, LCA was applied to traditional buildings located in the region of the city of Porto, in Portugal. For this, a comparison was made between a design approach considering a previous structural inspection and diagnosis work (IDE) called scenario 0, which consists of a prior structural analysis based on the real needs of the building that results in a reinforcement project structural. The other scenario is fictitious and represents the reconstruction of the floors and roof in a reinforced concrete structure, known as scenario 3. The LCA results revealed the main environmental impacts associated with the analyzed buildings, including energy consumption and the use of construction materials with a high environmental impact, for example, cement. Thus, it was possible to conclude that a full reconstruction scenario using reinforced concrete structures presents a worse environmental efficiency compared to the methodology used in scenario 0, due to the use of concrete, whose production process is a high source of emissions. of carbon dioxide (CO2). Thus, it was possible to identify the main environmental impacts generated if the buildings were built according to scenario 3. This study demonstrates the environmental benefits of the IDE methodology, which results in the materialization of the inspection and diagnosis report (RID), both methods are applied by the company NCREP. This information is relevant to guide decision-making in the construction and renovation of buildings, aiming to reduce their environmental impact and promote sustainability.
Life Cycle Analysis (LCA) is a tool that allows you to evaluate the environmental impacts of a product, process or service throughout all stages of its life cycle, from the extraction of raw materials to final disposal. In this study, LCA was applied to traditional buildings located in the region of the city of Porto, in Portugal. For this, a comparison was made between a design approach considering a previous structural inspection and diagnosis work (IDE) called scenario 0, which consists of a prior structural analysis based on the real needs of the building that results in a reinforcement project structural. The other scenario is fictitious and represents the reconstruction of the floors and roof in a reinforced concrete structure, known as scenario 3. The LCA results revealed the main environmental impacts associated with the analyzed buildings, including energy consumption and the use of construction materials with a high environmental impact, for example, cement. Thus, it was possible to conclude that a full reconstruction scenario using reinforced concrete structures presents a worse environmental efficiency compared to the methodology used in scenario 0, due to the use of concrete, whose production process is a high source of emissions. of carbon dioxide (CO2). Thus, it was possible to identify the main environmental impacts generated if the buildings were built according to scenario 3. This study demonstrates the environmental benefits of the IDE methodology, which results in the materialization of the inspection and diagnosis report (RID), both methods are applied by the company NCREP. This information is relevant to guide decision-making in the construction and renovation of buildings, aiming to reduce their environmental impact and promote sustainability.
Description
Keywords
Life cycle analysis Structural analysis Sustainability Environmental impacts Rehabilitation Análise do ciclo de vida Análise estrutural Sustentabilidade Impactos ambientais Reabilitação