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Relation between construction company size and the use of recycled materials
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For a circular economy approach in the construction sector, it is important to understand the value of using recycled materials in buildings and other constructions, reducing the extraction of natural resources, as well as the generation of construction and demolition waste. The role of construction companies is relevant in the sense that they are one of the main actors for this change. However, the differences within the sector, namely the size of the construction companies, can make it hard to implement, so it is essential to understand the factors influencing it. To this end, a structured questionnaire survey was submitted to Portuguese construction companies, dividing the sample of 652 answers into three groups (micro, small, and medium/large companies). Data treatment was carried out to determine whether there are significant statistical differences between groups regarding the use of recycled materials. Their use is carried out by most of the companies, in all groups, with the factors in favor related to the internal practices of the companies, and the against factors associated with market availability. For recycled aggregates, in particular, there is a weak self-evaluation of knowledge about these materials. Furthermore, there is a risk perception in terms of confidence in its use. These conclusions are important for the definition of differentiating strategies to promote and improve the use of recycled materials by construction companies.
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© 2021 Elsevier Ltd
Palavras-chave
Construction and demolition waste (CDW) Construction companies Construction sector Recycled aggregates Recycled materials Civil and Structural Engineering Architecture Building and Construction Safety, Risk, Reliability and Quality Mechanics of Materials SDG 8 - Decent Work and Economic Growth SDG 12 - Responsible Consumption and Production