Volume 38 Issue 5
Oct.  2024
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Article Navigation >  GEOTECHNICAL ENGINEERING TECHNIQUE  > 2024  >  38(5): 605-610
Xu Dapeng, Zhu Jianfeng, Wang Zhengqing. Suitability of NB01 Curing Agent to Solidify Construction Waste Soil as Roadbed Filler[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2024, 38(5): 605-610. doi: 10.3969/j.issn.1007-2993.2024.05.016
Citation: Xu Dapeng, Zhu Jianfeng, Wang Zhengqing. Suitability of NB01 Curing Agent to Solidify Construction Waste Soil as Roadbed Filler[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2024, 38(5): 605-610. doi: 10.3969/j.issn.1007-2993.2024.05.016
shu

Suitability of NB01 Curing Agent to Solidify Construction Waste Soil as Roadbed Filler

doi: 10.3969/j.issn.1007-2993.2024.05.016
  • 1.

    Mingyang (Ningbo) Environmental Protection Technology Co., Ltd., Ningbo 315021, Zhejiang, China

  • 2.

    School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China

  • 3.

    Hangzhou Luda Highway Engineering General Company, Hangzhou 310024, Zhejiang, China

  • Received Date: 2023-09-04
  • Accepted Date: 2024-03-11
  • Rev Recd Date: 2023-11-08
    • Available Online: 2024-10-09
  • Publish Date: 2024-10-09
    Abstract
  • The accumulation of construction waste soil has occupied a large amount of land resources and result in environmental pollution. A new curing agent, NB01, was adopted to solidify typical construction waste soil in Ningbo. Through conducting a series of macro-micro laboratory tests such as unconfined compressive strength test, road performance test, X-ray diffraction test, and electron microscopy scanning test, the solidification effect of NB01 solidified construction waste soil roadbed filler was investigated, and the mechanism of NB01 solidified construction waste soil was further revealed. The test results show that the unconfined compression strength, qu, of solidified muck increases with the increase of curing age and content. After 28-day curing, qu of the solidified muck can reach 1396 kPa, the water stability coefficient of the solidified soil approaches to 0.96, and the CBR value is larger than 25.80%, which meets the performance requirements of subgrade filler. The hydration reaction of NB01 can produce C-A-H and C-S-H gel, which enhance the cementation between soil particles and fill the pores and further promote the mechanical properties of solidified construction waste soil. The study could provide guidance for the recycling and utilization of construction waste resources.

     

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