Scholarlink

<p>Coastal soils exhibit high water content, high porosity, and low strength, requiring stabilization to meet engineering demands. In this study, the effects of dosages of ordinary Portland cement (OPC), bentonite, and ground granulated blast furnace slag (GGBFS) on the unconfined compressive strength (UCS) of solidified coastal soil were investigated using an orthogonal experimental design. Range and variance analyses indicate that OPC dosage has the greatest effect on UCS, followed by bentonite and GGBFS. The UCS of specimens varied from 201.2 to 1258.0&#xa0;kPa. The statistical optimum mix determined by orthogonal analysis is 15% OPC, 2% bentonite, and 8% GGBFS, while the practical recommended mix, considering cost and construction feasibility, is approximately 6% OPC, 2% bentonite, and 8% GGBFS. Microstructural observations confirm that the ternary binder system enhances interparticle bonding through the formation of C-S-H gels and ettringite, thereby improving compactness and strength.</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

Orthogonal Experimental Study on OPC–Bentonite–GGBFS Solidified Coastal Soil: Mechanical Properties and Solidification Mechanism

  • 期刊论文

  • 发表日期：

    2026年1月29日

查看全文
  • Shengli Zhu,
  • Wei Qiao,
  • Bing Yue,
  • Haonan Chu

摘要

Coastal soils exhibit high water content, high porosity, and low strength, requiring stabilization to meet engineering demands. In this study, the effects of dosages of ordinary Portland cement (OPC), bentonite, and ground granulated blast furnace slag (GGBFS) on the unconfined compressive strength (UCS) of solidified coastal soil were investigated using an orthogonal experimental design. Range and variance analyses indicate that OPC dosage has the greatest effect on UCS, followed by bentonite and GGBFS. The UCS of specimens varied from 201.2 to 1258.0 kPa. The statistical optimum mix determined by orthogonal analysis is 15% OPC, 2% bentonite, and 8% GGBFS, while the practical recommended mix, considering cost and construction feasibility, is approximately 6% OPC, 2% bentonite, and 8% GGBFS. Microstructural observations confirm that the ternary binder system enhances interparticle bonding through the formation of C-S-H gels and ettringite, thereby improving compactness and strength.