Evaluation of an internal wall system adapted to DFD

Abstract

Considering the shortage of products and the acceleration of the impacts of climate change, the linear production context of the construction sector has become a matter of concern, making the circular economy a strategy to make it more sustainable. Among the tools proposed by the circular economy is the design for disassembly (DfD), which aims to design buildings that allow the removal of components for later use, expanding the life cycle of products and the adaptability of the space. Therefore, this research aims to evaluate a constructive alternative that allows the application of DfD in vertical multi-family residential buildings, reducing the generation of demolition waste and carbon emission incorporated into the production of the material. Based on a literature review, the methods and materials used to apply DfD were verified, and a system of internal walls was proposed that met the project criteria for disassembly and, consequently, the circular economy. The proposed system, comprising wooden structure panels and drywall, met the criteria of ease of access, independence, simplicity and standardization, connections, and disassembly safety, as well as being assessed to have the potential for reuse based on the evaluation using the proposed indicator. Furthermore, as evaluated in the hypothetical case study, it reduced the mass of the building's walls by 26%, compared to a concrete block masonry system, in addition to a 19% reduction in CO2 emissions.