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Type: Thesis
Title: Impacts of cross-regional mobility of construction and demolition waste in Australia
Author: Wu, Huanyu
Issue Date: 2020
School/Discipline: School of Architecture and Built Environment
Abstract: There is a pressing global challenge to manage the massive generation of construction and demolition (C&D) waste, which amounts to over 10 billion tons per year and is part of the largest waste stream in the world. Inappropriate management of waste will generate a series of environmental, economic and social impacts. Recent reports suggest that multiple incentives cause C&D waste to be transported from the region where it was originally generated to other regions for further treatment. This cross-regional mobility will affect the amount of C&D waste being managed in the regions that export and import waste, thereby affecting the environmental, economic and social performance of the system. Previous studies adopted a local-closed theory to study C&D waste and there is little knowledge about cross-regional mobility of C&D waste and related impacts. To investigate these issues, this research was designed to understand the C&D waste treatment and management from a novel perspective addressing the impacts of the cross-regional mobility of the waste. This was done by: (1) investigating the management and cross-regional mobility of C&D waste in Australia; (2) evaluating the impacts of cross-regional mobility by using a novel methodology developed in this study; and (3) developing a series of recommendations for the management of C&D waste cross-regional mobility. Sufficient data was collected through a literature review, desktop surveys, site surveys, a series of expert interviews and a seminar, and professional databases to address all objectives. The study has generated many interesting results e.g., the reporting of in-depth knowledge of and the management status of C&D waste in Australia, including composition and generation, and fates1 and flows. Similarly, it quantified and mapped the C&D waste cross-regional mobility, including types of waste subjected to mobility, the routes of mobility, and associated regions. In terms of the impacts of C&D waste cross-regional mobility, the study demonstrates that if cross-regional mobility of C&D waste increases the recycling rate, this can reduce environmental impacts and increase industry income. With respect to the social aspect, if a considerable amount of C&D waste generated involved cross-regional mobility, employment opportunities for managing waste in regions that export waste will generally decrease. Based on the findings, ten optimisation strategies have been recommended for management of cross-regional mobility of C&D waste in Australia. This research is a first in Australia in considering cross-regional mobility of C&D waste management. The study offers an innovative research perspective by expanding the C&D waste management theory from the local-closed loop to a cross-regional network level. With respect to methodology, this study also improves management performance assessment methodologies for C&D waste by considering environmental, economic and social impacts of cross-regional mobility of waste. Novel assessment approaches, indicators, calculation methods and databases developed from the study will make a contribution to management performance assessment methodologies for C&D waste. In addition, the state-of-the-art information revealed in the study will enable local C&D waste management service providers to optimise their product category and investments.
Advisor: Zuo, Jian
Zillante, George
Wang, Jiayuan
Dissertation Note: Thesis (Ph.D.) -- University of Adelaide, School of Architecture and Built Environment, 2020
Keywords: C & D waste
construction waste
cross-regional mobility
waste management
sustainable construction
Provenance: This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exceptions. If you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at:
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