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Study on Compressibility and Settlement of a Landfill with Aged Municipal Solid Waste: A Case Study in Taizhou

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  • Haijie He

    (College of Civil and Architectural Engineering, Zhejiang University, Hangzhou 310000, China
    College of Civil and Architectural Engineering, Taizhou University, Taizhou 318000, China
    Fangyuan Construction Group Co., Ltd., Taizhou 318000, China)

  • Tao Wu

    (College of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212000, China
    Jiangsu Engineering Research Center for Geoenvironmental Disaster Prevention and Remediation, Jiangsu University of Science and Technology, Zhenjiang 212000, China)

  • Xiaogang Wang

    (College of Civil and Architectural Engineering, Taizhou University, Taizhou 318000, China)

  • Zhanhong Qiu

    (College of Civil and Architectural Engineering, Taizhou University, Taizhou 318000, China)

  • Jiwu Lan

    (College of Civil and Architectural Engineering, Zhejiang University, Hangzhou 310000, China)

Abstract

Capacity expansion of existing landfills is one of the most economical methods of relieving the stress caused by the disposal of local municipal solid waste (MSW) in developing countries. In this paper, the compression characteristics and settlement of the aged MSW in Xiawan landfill were studied. The physical composition, moisture content, volumetric weight, and modified primary compression index of the aged MSW at different depths were tested, and then the settlement of the MSW in the area to be filled with fly ash was calculated. The test results showed that the main components of the aged MSW were muck and textile, indicating that kitchen waste was degraded. The moisture content of the MSW generally increased with depth, and the average moisture content within 5 m of the shallow part of the landfill was 97%. The void ratio of the aged MSW decreased from 4.0 to 2.2 with an increase in vertical load from 1 kPa to 400 kPa. The modified primary compression index of the aged MSW ranged from 0.22 to 0.27, and generally decreased with depth. Under the load generated by the subsequent filling of fly ash, the final strains of the aged MSW was approximately 15% to 20%. The physical composition and compression characteristics of the aged MSW measured in this paper were compared with those reported in previous studies to provide reference for the settlement analysis of landfills with aged MSW.

Suggested Citation

  • Haijie He & Tao Wu & Xiaogang Wang & Zhanhong Qiu & Jiwu Lan, 2021. "Study on Compressibility and Settlement of a Landfill with Aged Municipal Solid Waste: A Case Study in Taizhou," Sustainability, MDPI, vol. 13(9), pages 1-13, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:9:p:4831-:d:543331
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    References listed on IDEAS

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    1. Francisco André & Emilio Cerdá, 2004. "Landfill Construction and Capacity Expansion," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 28(4), pages 409-434, August.
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    Cited by:

    1. Han Ke & Jinghang Li & Xuanqi Zhang & Jie Hu, 2022. "Bacterial Community Structure and Predicted Metabolic Function of Landfilled Municipal Solid Waste in China," Sustainability, MDPI, vol. 14(6), pages 1-18, March.

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