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Innovative Construction Waste Treatment Technology for Subway Projects

In: Proceedings of the 24th International Symposium on Advancement of Construction Management and Real Estate

Author

Listed:
  • Jian Liu

    (Shenzhen University)

  • Xingxiu Wang

    (Shenzhen University
    Sino-Australia Joint Research Center in BIM and Smart Construction, Shenzhen University)

  • Lingyi Wu

    (Shenzhen University)

Abstract

In order to improve the treatment efficiency of the construction waste in the subway projects, solve the problem of no-storage for construction waste and realize resource reuse, this paper analyzes the traditional construction waste treatment process, an ecological technology of construction waste treatment was developed mainly based on zero emission & 4R (reduce, reuse, recycle, revolution) concept, centrifugal solid–liquid separation technology and high speed suspended solid settlement technology. The subway construction waste can be accurately divided into gravel, sand, silt and clay by four-stage treatment process, and the treated waste can be fully recycled. The dewatered clay can be directly used for clay grouting for the shield tunnel construction, or is made into permeable bricks. The silts can be made up into backfill, planting soils and bricks. The gravel and sand can be directly used as coarse and fine aggregates or mixed soil of the sponge city facilities. This innovative process is far more efficient than the traditional treatment method, and there is no secondary pollution and cost savings. The newly developed technology is the leading construction waste treatment technology in the world, and it can be also applied to the construction waste of other infrastructure tunnels and foundation pits of buildings. It has great application potential and hopes to provide some ideas for the development of construction waste treatment and environmental protection in China's subway construction projects.

Suggested Citation

  • Jian Liu & Xingxiu Wang & Lingyi Wu, 2021. "Innovative Construction Waste Treatment Technology for Subway Projects," Springer Books, in: Gui Ye & Hongping Yuan & Jian Zuo (ed.), Proceedings of the 24th International Symposium on Advancement of Construction Management and Real Estate, pages 1711-1718, Springer.
    • Handle: RePEc:spr:sprchp:978-981-15-8892-1_120
    DOI: 10.1007/978-981-15-8892-1_120
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