原文传递
Soil Mixing Design Methods and Construction Techniques for Use in High Organic Soils.
| 题名： | Soil Mixing Design Methods and Construction Techniques for Use in High Organic Soils. |
| 作者： | Mullins, G.; Gunaratne, M. |
| 关键词： | Organic soils, Soil mixing, Roadway design, Soil stabilization, Soil structure, Dry soils, Bench testing |
| 摘要： | Organic soils present a difficult challenge for roadway designers and construction due to the high compressibility of the soil structure and the often associated high water table and moisture content. For other soft or loose inorganic soils, stabilization via cement or similar binders (a method called soil mixing) has proven to be an effective and predictable solutions; the FHWA has published a comprehensive design manual for these techniques. Organic soils, however, are not addressed therein to a level of confidence for design as organic soils do not follow the trends of inorganic soils. In short, the high porosity, high water content, and high levels of humic acids differentiate organic soils from all other soils where soil mixing has been proven successful. To combat these effects, more cement content is required to bring the water/cement ratio down to acceptable levels and even more cement is required to offset the acidity. Extending the observations of past researchers, a threshold cement content was defined below which no strength gain was achieved. This threshold was then defined as a cement content offset above which the measured strengths matched well with other soil types. This report presents the findings from a thorough literature search, laboratory bench tests, large scale laboratory tests, field evaluation of past and on-going projects and concludes with recommendations for designing for soil mixing applications in highly organic soils. |
| 总页数： | Mullins, G.; Gunaratne, M. |
| 报告类型： | 科技报告 |
相关文献
- Soil Mixing Design Methods and Construction Techniques for Use in High Organic Soils, Phase 2.
- Chemical Modification of Uniform Soils and Soils with High/Low Plasticity Index
- Application of Microbial Induced Calcite Precipitation to Stabilize Florida High-Organic Matter Soils for Roadway Construction.
- Establishing Permanent Vegetation after Highway Construction.
- Performance Evaluation and Numerical Modeling of Embankment over Soft Clayey Soil Improved with Chemico-Pile.
- STATE-OF-PRACTICE REVIEW OF DEEP SOIL MIXING TECHNIQUES IN CHINA.
检索历史
应用推荐
