Effective construction and demolition waste management assessment through waste management hierarchy; a case of Australian large construction companies
2021
Kabirifar, Kamyar | Mojtahedi, Mohammad | Changxin Wang, Cynthia | Tam, Vivian W.Y.
The construction industry accounts for an enormous quantity of construction and demolition waste (CDW) where its improper management jeopardizes social, environmental, and economic resources. Although several studies have investigated some aspects of construction and demolition waste management (CDWM), there is a substantial need to empirically analysing effective construction and demolition waste management (ECDWM) considering its contributing factors and the CDWM hierarchy (CDWMH). A framework was proposed to assess the effectiveness of CDWM using CDW stakeholders’ attitudes (CDWSA), CDWM within project life cycles (CDWPLC), CDWM with respect to sustainability (SCDWM), and CDWM tools (CDWMT) as factors that effectively affect CDWM, and CDWMH as the most effective strategy to manage CDW, leading to the effective management of CDW. This study analyzed ECDWM in Australia. Thus, 108 large construction companies were approached via an online questionnaire. Data were analyzed through partial least squares based structural equation modelling using SmartPLS. Results (path coefficients) could prove that CDWSA was the most effective factor to CDWM, while CDWPLC was the least effective (ineffective). In addition, recycling strategy received more attention than reusing and reducing strategies, which contrasts with the nature of CDWMH. The study is relevant for CDW professionals as well as academicians involved in CDWM.
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