Introdução
Rose and Stegemann (2018) emphasize that waste management has been gaining prominence in the corporate arena, with reverse logistics (RL) serving as a strategy to reintroduce waste into the production cycle and mitigate environmental impacts. The construction sector is responsible for significant consumption—and consequent waste—of natural resources (Arora et al., 2021), and the role of demolition contractors is central to minimizing construction and demolition waste (C&DW).
Problema de Pesquisa e Objetivo
Implementing RL faces barriers as the complexity of demolition processes, which demand studies and planning (Rose & Stegemann, 2018). Arora et al. (2020) further contend that RL for construction waste is particularly relevant in Brazil, where rapid urban growth and the economic significance of construction call for sustainable practices. This study aims to identify and validate for Brazilian context, the barriers to RL of C&DW for the demolition-contractor stakeholder
Fundamentação Teórica
Among barriers are the lack of infrastructure,absence of economic incentives,technological challenges,and regulatory gaps.Barriers include:the absence of a market for recycled materials(Neto & Correia, 2019),lack of public policies(Mhatre et al., 2023),shortage of appropriate technologies and equipment,scarcity of recycling facilities (Narcis, Ray, & Hosein, 2019),the absence of standardized waste codes(Tangtinthai, Heidrich, & Manning, 2019),restricted areas for final disposal(Shi, Huang, & Xu, 2023), and the pressing need for government regulation and enforcement(Neto & Correia, 2019).
Metodologia
The methodology combines a bibliographic review and practical validation with relevant stakeholders.The analysis was conducted using the Lawshe method.15 barriers were identified and assessed through a Google Forms questionnaire with three response options:essential,important but not essential,and not important.The survey included demolition companies, engineers and environmental consultants, academics, government agencies, regulators, associations, and unions in the sector.Responses were analyzed using the Content Validity Ratio(Lawshe, 1975).
Análise e Discussão dos Resultados
15 barriers were identified in the literature.The barriers with a CVR above the critical were classified as validated,whereas those with lower values were not validated.In total, 11 barriers were validated.In the technical domain,the key barriers include:the absence of designs that facilitate deconstruction (Iacovidou & Purnell,2016),inadequate connection techniques(Chinda,2017),and poorly designed joints(Charef, Morel, & Rakhshan, 2021).These barriers demonstrate that overcoming them is crucial to enabling circular economy in the sector.
Considerações Finais
The contributions of the study are:a theoretical framework of 15 barriers identified in the literature;11 barriers validated within the Brazilian context,serving as a practical guide for companies;suggested actions to overcome these barriers;and qualitative correlations among them.Limitations include the study’s exclusive focus on Brazil, which restricts generalizability.Future research could employ other statistical analysis to deepen the understanding of barriers.The widespread adoption of RL for C&DW depends on investments and public policies that promote a circular economy in the sector.
Referências
ARORA, M. et al. Residential building material stocks and component-level circularity: The case of Singapore. Journal of Cleaner Production, v. 216, p. 239–248, 10 abr. 2019;LAWSHE, C. H. A quantitative approach to content validity”.Personnel Psychology, v. 28, p. 563–575, 1975;NARCIS, N.; RAY, I.; HOSEIN, G. Construction and demolition waste management actions and potential benefits: A perspective from Trinidad and Tobago. Buildings, v. 9, n. 6, 2019;ROSE, C. M.; STEGEMANN, J. A. From waste management to component management in the construction industry. Sustainability (Switzerland), v. 10, n