Measuring the impact of prefabrication on construction waste reduction: An empirical study in China |
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| Institution: | 1. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;2. Faculty of Business, Law and the Built Environment, Salford University, Salford, United Kingdom;1. College of Civil Engineering, Shenzhen University, Shenzhen 518060, China;2. School of Computing, Engineering and Mathematics, University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia;3. School of Architecture & Built Environment; Entrepreneurship, Commercialisation and Innovation Centre (ECIC), The University of Adelaide, Adelaide 5005, Australia;4. Zhuhai Campus, Beijing Institute of Technology, Zhuhai 519000, China;1. University of Western Sydney, School of Computing, Engineering and Mathematics, Locked Bag 1797, Penrith, NSW 2751, Australia;2. Department of Civil and Architectural Engineering, City University of Hong Kong, Hong Kong;3. Department of Construction Management, School of Built Environment, Curtin University, Australia;4. School of the Built Environment, Heriot-Watt University, Edinburgh, Scotland, United Kingdom;1. School of Mechanical Engineering, Tongji University, Shanghai 200092, China;2. School of Construction Management and Real Estate, Chongqing University, Chongqing 400045, China;3. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong;4. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;1. Department of Construction Management and Real Estate, Shenzhen University, Shenzhen, Guangdong, China;2. School of Computing, Engineering and Mathematics and Institute for Infrastructure Engineering, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia;1. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong, China;2. Faculty of Construction Management and Real Estate, Chongqing University, Chongqing 400045, China;1. College of Civil Engineering, Shenzhen University, Shenzhen, Guangdong Province 518060, China;2. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;3. University of Western Sydney, School of Computing, Engineering and Mathematics, Locked Bag 1797, Penrith, NSW 2751, Australia |
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| Abstract: | Prefabrication has been widely regarded as a sustainable construction method in terms of its impact on environmental protection. One important aspect of this perspective is the influence of prefabrication on construction waste reduction and the subsequent waste handling activities, including waste sorting, reuse, recycle, and disposal. Nevertheless, it would appear that existing research with regard to this topic has failed to take into account its innate dynamic character of the process of construction waste minimization; integrating all essential waste handling activities has never been achieved thus far. This paper proposes a dynamic model for quantitatively evaluating the possible impacts arising from the application of prefabrication technology on construction waste reduction and the subsequent waste handling activities. The resulting model was validated based on an actual building project in Shenzhen, China.The simulation results of the design scenarios indicate that the policy on providing subsidy for each square meter of the prefabrication adopted in the construction would have more significant effect on promoting the use of prefabrication and improving the performance of construction waste reduction compared to the increase of income tax benefits. The results also show that (1) interaction exists among different management measures, and (2) the combined effect of multiple policies is larger than the simple sum of their individual impacts, indicating the need for comprehensive consideration on the combined effect of these potential polices. This paper demonstrates the potential benefits of using a system dynamics approach in understanding the behavior of real-world processes. The developed model not only serves as a practical tool for assessing the impact of off-site prefabrication on construction waste reduction and the corresponding waste handling activities, but also help provide a valuable reference to policy makers through the comparison of simulation results generated under various scenarios such that the best policy mix can be identified prior to production. |
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| Keywords: | Waste management Prefabrication Material flow System dynamics China |
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