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Investigation into Creep Characteristics and Model of Recycled Construction and Demolition Waste Used in Embankment Filler

Author

Listed:
  • Zhe Li

    (Key Laboratory of Special Area Highway Engineering, Ministry of Education, Chang'an University, Xi’an 710064, China)

  • Shihao Yan

    (Key Laboratory of Special Area Highway Engineering, Ministry of Education, Chang'an University, Xi’an 710064, China)

  • Lulu Liu

    (Key Laboratory of Special Area Highway Engineering, Ministry of Education, Chang'an University, Xi’an 710064, China
    Institute of Geotechnical Engineering, Southeast University, Nanjing 2111189, China)

  • Jia Yang

    (Key Laboratory of Special Area Highway Engineering, Ministry of Education, Chang'an University, Xi’an 710064, China)

Abstract

The creep deformation of recycled construction and demolition waste (CDW) filler is an important factor affecting road performance. In this paper, a series of laboratory tests, including a compaction test, sieving test, California bearing ratio (CBR) test, creep test and unloading test are conducted on CDW filler. The engineering properties of different ratios of CDW mixture are systematically analyzed, the CBR value of CDW filler meets the requirements of an embankment. The creep type of CDW filler under a test load is stable creep, the results of the creep characteristics are analyzed from a microscopic point of view. The filler with a 7:2:1 ratio (brick slag: concrete: mortar) has the densest structure, which is dense and less porous, and the deformation is the smallest. Reasonable proportion control is the key to reducing embankment deformation. The improved Burgers model, which can better describe the creep characteristics of CDW filler, and the effects of load and ratio on the creep parameters are analyzed using the equivalent creep compliance. This study is of great significance for the promotion of CDW and meets the requirements of sustainable development.

Suggested Citation

  • Zhe Li & Shihao Yan & Lulu Liu & Jia Yang, 2020. "Investigation into Creep Characteristics and Model of Recycled Construction and Demolition Waste Used in Embankment Filler," Sustainability, MDPI, vol. 12(5), pages 1-22, March.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:5:p:1924-:d:327921
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    References listed on IDEAS

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    1. Ayad Subhy & Gustavo Menegusso Pires & Ana Jiménez del Barco Carrión & Davide Lo Presti & Gordon Airey, 2019. "Binder and Mixture Fatigue Performance of Plant-Produced Road Surface Course Asphalt Mixtures with High Contents of Reclaimed Asphalt," Sustainability, MDPI, vol. 11(13), pages 1-14, July.
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    Cited by:

    1. Xingkai Wang & Leibo Song & Caichu Xia & Guansheng Han & Zheming Zhu, 2021. "Nonlinear Elasto-Visco-Plastic Creep Behavior and New Creep Damage Model of Dolomitic Limestone Subjected to Cyclic Incremental Loading and Unloading," Sustainability, MDPI, vol. 13(22), pages 1-15, November.

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