Sustainable construction and demolition waste management in Somaliland: Regulatory barriers lead to technical and environmental barriers

摘要

The large amount of construction and demolition waste (CDW), coupled with poor management create burdens for the environment, society and economy. Barriers hinder sustainable CDW management. Understanding the barriers can promote the development of eco-friendly, socially harmless, and economically viable strategies. This study aims to integrate sustainable waste management in construction (SWM) and demolition practices. This study develops a valid set of attributes to justify the interrelationships among the barriers. The attributes of sustainable waste management are qualitative by nature, and uncertainties exist because of linguistic preferences regarding the attributes. This study applies the fuzzy Delphi method to validate five barriers and 14 criteria under uncertainties. Fuzzy decision-making trial and evaluation laboratory (DEMATEL) with qualitative information is used to determine the interrelationships among the barriers. The results indicate that regulatory barriers are the primary cause of technical and environmental barriers. In Somaliland, the criteria hindering sustainable CDW management practices are the lack of awareness, the lack of commitment, ineffective management, the lack of collaboration, the lack of national vision, inadequate funding, limited infrastructure, the lack of supervision, and the lack of legal enforcement. The theoretical and managerial implications of this study are discussed.(c) 2021 Elsevier Ltd. All rights reserved.