期刊
JOURNAL OF CLEANER PRODUCTION
卷 256, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2020.120385
关键词
Demolition waste; Waste generation rate; Building structure; Recycling potential; Environmental effect; Economic value
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [NRF2017R1D1A1B03033030]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea [20174030201740]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [NRF2019R1A2C1088446]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20174030201740] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study investigates the recycling potential of demolition waste (DW) according to building structure, while considering environmental and economic aspects For that, this study surveyed 1,034 residential buildings in Korea immediately before demolition to collect reliable information on demolition waste generation rates (DWGRs). This study classified the removal stages of buildings into the demolition, collection and sorting, transportation, and disposal stages. This study suggested a method for carbon emissions calculation for each stage and carried out an inventory analysis. The economic value of recycled DW materials was also calculated. Furthermore, the recycling potential was calculated based on the economic value and the environmental load for the current scenario, i.e., the current waste recycling rate in Korea, and the maximum scenario, i.e., the maximum theoretical recycling rate. Regarding building structures, the recycling potential of wooden structures was the highest in both the scenarios. However, masonry-block structures showed improved recycling potential in the maximum scenario. Regarding DW types, the recycling potential of plastics was the highest, with plastics from reinforced concrete (RC) structures showing 6.6 times higher recycling potential than those from wooden structures. And the possibility of improving the recycling potential was higher for glass and plastics than aggregates, timber, and metals. Through the above research, this paper devised an approach that can be used to plan a detailed construction and demolition waste management strategy, considering building structures and DW types, and this method can also be applied to other regions and countries. (C) 2020 Elsevier Ltd. All rights reserved.
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