Hazard Control in Tunnelling and Underground Engineering  2023, Vol. 5 Issue (4): 1-8    DOI: 10.19952/j.cnki.2096-5052.2023.04.01
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Engineering performance of flowable backfill soil based on shield muck
ZENG Changnü1, WANG Zizheng1, CAO Shuoqian1, REN Lei2
1. School of Civil Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China;
2. Zhengzhou Rail Transit Co., Ltd., Zhengzhou 450003, Henan, China
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Abstract  This study aimed to enhance shield muck by incorporating foam agent and active magnesium oxide. The fluidity, bleeding rate and compressive strength of the improved soil under different foam agent and active magnesium oxide content were obtained by fluidity, bleeding rate and compressive strength test. It was showed that the improved flowable backfill soil exhibited excellent fluidity and solidified strength. By adjusting the content of foam agent and active magnesium oxide, the flowable backfill soil with fluidity ranging from 180 mm to 320 mm, bleeding rate below 5%, and 28-day compressive strength between 0.6 MPa and 1.2 MPa could be obtained.
Key wordsmuck resource      foam agent      active magnesium oxide      fluidity      bleeding rate      compressive strength     
Received: 30 July 2023      Published: 19 December 2023
ZTFLH:  X705  
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ZENG Changnü
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REN Lei
Cite this article:   
ZENG Changnü,WANG Zizheng,CAO Shuoqian, et al. Engineering performance of flowable backfill soil based on shield muck[J]. Hazard Control in Tunnelling and Underground Engineering, 2023, 5(4): 1-8.
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