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<p>Collapsible loess in Northwestern China challenges infrastructure backfilling. This study creates a new loess - based cement composite slurry (LCCS) with 8% cement and additives. LCCS has a high 180 - mm slump, a low permeability of 2.1 × 10⁻⁶ cm/s at 8% cement, and its collapsibility coefficient is less than 0.009. Durability tests show it has 27% better frost resistance than plain cement slurry, though with more sulfate - induced mass loss. LCCS uses 30% less cement than conventional CLSM, cutting costs and carbon emissions. Thus, it’s a promising green alternative for backfilling in such areas.</p>

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Hydro-physical properties and durability study of cement slurry material based on loess

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月16日

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  • Wuquan Zhu,
  • Zhao Long,
  • Laping He,
  • Shuaihua Ye,
  • Yiqiao Mao

摘要

Collapsible loess in Northwestern China challenges infrastructure backfilling. This study creates a new loess - based cement composite slurry (LCCS) with 8% cement and additives. LCCS has a high 180 - mm slump, a low permeability of 2.1 × 10⁻⁶ cm/s at 8% cement, and its collapsibility coefficient is less than 0.009. Durability tests show it has 27% better frost resistance than plain cement slurry, though with more sulfate - induced mass loss. LCCS uses 30% less cement than conventional CLSM, cutting costs and carbon emissions. Thus, it’s a promising green alternative for backfilling in such areas.