ORIGINAL RESEARCH article
Front. Mater.
Sec. Structural Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1604066
This article is part of the Research TopicSustainable and Green Materials in Geotechnical EngineeringView all 4 articles
Mix proportion test and engineering characteristics analysis of loessbased cement slurry material
Provisionally accepted
- 1Gansu CSCEC Municipal Engineering Investigation and Design Institute Co., Ltd, Lanzhou, China
- 2Gansu Civil Aviation Airport Group Co., Ltd, Lanzhou, China
- 3Lanzhou University of Technology, Lanzhou, China
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To address the challenges of limited space, quality control issues, and ensuring stable self-compaction of backfill materials in trench backfilling projects, a loess-based cement slurry was developed as a flowable backfill material by using loess as the primary base material and incorporating an appropriate amount of admixture for solidification and improvement. The permeability, collapsibility, and disintegration of the loess-based cement slurry were analyzed by varying the cement content and curing age. The slump test was first conducted to determine the optimal water content for varying cement contents, aiming for a slump of 180 mm. Subsequently, the compressive strength was tested using an orthogonal experimental design. The analysis revealed the optimal mix ratio for the loess-based cement slurry: 8% naphthalene sulfonate formaldehyde condensate, 3% sodium sulfate, 0.5% sodium thiosulfate, and 0.08% ethylene glycol. Experimental results indicated that with 4% cement content, the loess-based cement slurry exhibited a maximum permeability coefficient of 0.977 × 10 -5 and a maximum collapsibility coefficient of 0.865 × 10 -2 , confirming that both permeability and collapsibility meet the required standards. When the cement content exceeds 6%, the cement paste shows minimal collapse. This study offers an efficient and reliable technical solution for backfilling operations in loess regions.
Keywords: loess-based cement slurry, Mix proportion, Engineering characteristics, Compressive Strength, Orthogonal test
Received: 01 Apr 2025; Accepted: 22 Apr 2025.
Copyright: © 2025 He, Ge, Long, Guo and Ye. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Zhonghua Ge, Gansu Civil Aviation Airport Group Co., Ltd, Lanzhou, China
Zhao Long, Gansu CSCEC Municipal Engineering Investigation and Design Institute Co., Ltd, Lanzhou, China
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