Scholarlink

<p>Rapid growth of road construction has led to a shortage of high-quality embankment materials. Stabilizing marginal embankment soils with industrial by-products offers a viable solution to the challenges of transporting quality materials over long distances. There are very limited studies focusing on the slope stability of embankments constructed by treating marginal soil (MS) with rice husk ash (RHA)-blended binders. Therefore, this study examines the slope stability of embankments constructed using MS stabilized with RHA-blended binders across various geometries (slope angles and heights) and foundation conditions. First, the engineering properties of four RHA-blended binders were compared with Institute of Construction Training and Development (ICTAD) specifications: MS stabilized with blended RHA-ordinary Portland cement (MS-RHA-OPC), MS stabilized with RHA-fly ash (FA)-geopolymer (MS-RHA-FA-GP), MS stabilized with RHA-FA (MS-RHA-FA), and MS stabilized with RHA-lime (MS-RHA-L). Subsequently, slope stability analyses of embankments were conducted with finite element method (FEM) and limit equilibrium method (LEM) for varying slope angles (30°, 45°, 60°, 75°), heights (4, 6, 8, 10&#xa0;m), and foundation conditions (hard stratum, stiff clay, soft clay). Finally, the effects of ground water table (GWT) and traffic load (TL) on the stability were examined. The findings revealed that MS-RHA-OPC are suitable for an embankment fill material for homogeneous embankments up to 10&#xa0;m height, whereas the other RHA-blended binders (MS-RHA-FA-GP, MS-RHA-FA and MS-RHA-L) are suitable for a filling material in zoned embankment construction. Embankments constructed with MS-RHA-OPC exhibited the highest FOS values across all slope angles, embankment heights, and foundation conditions. Overall, RHA-blended binders are suitable to treat the marginal embankment materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Numerical Study on Slope Stability Analysis of the Embankment Constructed by Treating Marginal Soils with Rice Husk Ash Blended Binders

  • 期刊论文

  • 发表日期：

    2025年4月24日

查看全文
  • J. Sangeetha,
  • M. C. M. Nasvi,
  • L. C. Kurukulasuriya

摘要

Rapid growth of road construction has led to a shortage of high-quality embankment materials. Stabilizing marginal embankment soils with industrial by-products offers a viable solution to the challenges of transporting quality materials over long distances. There are very limited studies focusing on the slope stability of embankments constructed by treating marginal soil (MS) with rice husk ash (RHA)-blended binders. Therefore, this study examines the slope stability of embankments constructed using MS stabilized with RHA-blended binders across various geometries (slope angles and heights) and foundation conditions. First, the engineering properties of four RHA-blended binders were compared with Institute of Construction Training and Development (ICTAD) specifications: MS stabilized with blended RHA-ordinary Portland cement (MS-RHA-OPC), MS stabilized with RHA-fly ash (FA)-geopolymer (MS-RHA-FA-GP), MS stabilized with RHA-FA (MS-RHA-FA), and MS stabilized with RHA-lime (MS-RHA-L). Subsequently, slope stability analyses of embankments were conducted with finite element method (FEM) and limit equilibrium method (LEM) for varying slope angles (30°, 45°, 60°, 75°), heights (4, 6, 8, 10 m), and foundation conditions (hard stratum, stiff clay, soft clay). Finally, the effects of ground water table (GWT) and traffic load (TL) on the stability were examined. The findings revealed that MS-RHA-OPC are suitable for an embankment fill material for homogeneous embankments up to 10 m height, whereas the other RHA-blended binders (MS-RHA-FA-GP, MS-RHA-FA and MS-RHA-L) are suitable for a filling material in zoned embankment construction. Embankments constructed with MS-RHA-OPC exhibited the highest FOS values across all slope angles, embankment heights, and foundation conditions. Overall, RHA-blended binders are suitable to treat the marginal embankment materials.