Abstract
The output of construction and demolition (C&D) waste in China has been rapidly increasing in the past decades. The direct landfill of such construction and demolition waste without any treatment accounts for about 98%. Therefore, recycling and utilizing this waste is necessary. The prediction of the output of such waste is the basis for waste disposal and resource utilization. This study takes Shandong Province as a case, the current output of C&D waste is analyzed by building area estimation method, and the output of C&D waste in the next few years is also predicted by Mann–Kendall trend test and quadratic exponential smoothing prediction method. Results indicate that the annual productions of C&D waste in Shandong Province demonstrates a significant growth trend with average annual growth of 11.38%. The growth rates of each city differ a lot. The better the city’s economic development, the higher the level of urbanization, the more C&D waste generated. The prediction results suggest that the output of C&D waste in Shandong Province will grow at an average rate of 3.07% in the next few years. By 2025, the amount of C&D waste will reach 141 million tons. These findings can provide basic data support and reference for the management and utilization of C&D waste.
Highlights
Construction and demolition (C&D) waste is produced during the process of building construction, expansion, and demolition
According to the statistical yearbook of each province, the annual construction area in Shandong Province is in the forefront of China every year but the utilization rate of the C&D waste resources is relatively low
Knowing the amount of existing C&D waste and accurately predicting the waste amount in the few years are the prerequisites for effective C&D waste management
Summary
Construction and demolition (C&D) waste is produced during the process of building construction, expansion, and demolition. The production of C&D waste rapidly increases [1]. The estimated annual production of C&D waste in China is approximately 2 billion tons, which accounts for 80–90% of the total municipal waste. The rate of resource utilization is less than 5% [2]. The disposal and utilization of C&D waste are common concerns of society. The production of C&D waste is the basis for formulating countermeasures for the corresponding treatments and resource utilization. The government lacks information about the production of C&D waste, which increases the difficulty of implementing comprehensive management for these waste [6]
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