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Original Research | Open Access

Feasibility study on using excavated soil and rock to sintering utilization

Jing BaiaPeng Kangb( )Wenbo ZhangcKunyang ChendYu ZhangdDing ZhoudHuabo Duand( )
The Institute for Sustainable Development, Macau University of Science and Technology, Macau 999078, China
College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
Chinese Academy of Environmental Planning, Beijing 10012, China
College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
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Abstract

Urban construction, especially the ongoing large-scale expansion and utilization of underground space, has resulted in massive excavated soil and rock (ESR) from buildings and subways. Therefore, this study aims to explore the technical ways of ESR sintering utilization from the perspective of technology, environment, and policy through qualitative and quantitative methods. The study analyzes the soil properties and distribution of different depths, and the annual production of clay-rich ESR accounts for about 30 million m3 in Shenzhen. More importantly, the comparison between various pollutant concentrations of ESR in Shenzhen and local soil background values showed that the ESR in Shenzhen had no environmental risks. This study can not only provide a scientific basis for ESR as the raw material of sintering but also provide a theoretical basis for the promotion of the pilot of "Zero waste city".

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Circular Economy
Article number: 100007
Cite this article:
Bai J, Kang P, Zhang W, et al. Feasibility study on using excavated soil and rock to sintering utilization. Circular Economy, 2022, 1(1): 100007. https://doi.org/10.1016/j.cec.2022.100007

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Received: 27 February 2022
Revised: 15 March 2022
Accepted: 18 March 2022
Published: 22 June 2022
© 2022 The Author(s). Published by Elsevier B.V. on behalf of Tsinghua University Press.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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