Scholarlink

<p>Gypseous soils may cause many problems to engineering projects due to the collapsibility of these soils upon wetting. The collapse is basically caused by the dissolution and leaching of gypsum that acts as a cementing agent between soil particles. Many materials and byproducts have been utilized to treat these soils. In this research, numerical analysis is performed to evaluate the collapse behavior of a gypseous soil. The parameters required for the numerical modeling are evaluated from conventional laboratory tests in addition to employing a laboratory footing model of 100 × 100&#xa0;mm. The model test is conducted after improving the top layer of the test specimens with water treatment sludge, cement kiln dust (CKD), and geogrid. The results of the model indicated that the reduction in collapse was 75% when the top layer of 50&#xa0;mm thickness was compacted. When the sludge, CKD, and geogrid were used, the reduction values were 86%, 82%, and 89%, respectively. The results indicated that the treatment methods were effective in reducing the collapsibility. Furthermore, the numerical analysis produced a good agreement between the results obtained from the numerical model and those from the laboratory model.</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

Collapse Behavior of a Stabilized Gypseous Soil: Numerical Analysis Based on a Laboratory Footing Model

  • 期刊论文

  • 发表日期：

    2025年9月23日

查看全文
  • Nabeel Mahmood,
  • Ahmed Abdulkareem,
  • Kamil S. Kamil,
  • Roaa Abdullah

摘要

Gypseous soils may cause many problems to engineering projects due to the collapsibility of these soils upon wetting. The collapse is basically caused by the dissolution and leaching of gypsum that acts as a cementing agent between soil particles. Many materials and byproducts have been utilized to treat these soils. In this research, numerical analysis is performed to evaluate the collapse behavior of a gypseous soil. The parameters required for the numerical modeling are evaluated from conventional laboratory tests in addition to employing a laboratory footing model of 100 × 100 mm. The model test is conducted after improving the top layer of the test specimens with water treatment sludge, cement kiln dust (CKD), and geogrid. The results of the model indicated that the reduction in collapse was 75% when the top layer of 50 mm thickness was compacted. When the sludge, CKD, and geogrid were used, the reduction values were 86%, 82%, and 89%, respectively. The results indicated that the treatment methods were effective in reducing the collapsibility. Furthermore, the numerical analysis produced a good agreement between the results obtained from the numerical model and those from the laboratory model.