基于盾构渣土改良的流动化回填土的工程性能研究

doi:10.19952/j.cnki.2096-5052.2023.04.01

Hazard Control in Tunnelling and Underground Engineering

2023, Vol. 5

Issue (4): 1-8 DOI: 10.19952/j.cnki.2096-5052.2023.04.01

Research Article

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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 words： muck resource foam agent active magnesium oxide fluidity bleeding rate compressive strength

Received: 30 July 2023 Published: 19 December 2023

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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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http://tunnel.sdujournals.com/EN/10.19952/j.cnki.2096-5052.2023.04.01 OR http://tunnel.sdujournals.com/EN/Y2023/V5/I4/1

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