Avaliação do ciclo de vida das vedações externas de uma edificação habitacional: estudo entre alvenaria e light steel frame

Abstract

The methods that intensify the quantification of environmental impacts have been considered a decisive form in the construction processes choice in Brazil. It is extremely important to develop metrics that make it possible to assess the environmental performance of products. One way to measure the environmental performance of a building is through the Life Cycle Assessment (LCA). The present work seeks to evaluate two external coating compositions for a determined dwelling. Among the compositions, will be evaluated the construction in masonry and in Light Steel Frame. Both compositions will be evaluated in their process, except texture and painting, where it can be implemented in the same way in both compositions. The Life Cycle Inventory (LCI) was prepared from the ELCD 3.2 database, adopting the CML as as a method in OpenLCA software 1.10.3. Among 11 different types of impacts, it was found that masonry was more impactful in 7 of these, however, the results should be analyzed by the type of contribution for each specific environmental impact and consequently the impact category it reaches, in order to analyze bottlenecks in the processes, and possible of materials changing in each composition, aiming to expand the proposed theme by the work. [resumo fornecido pelo autor]