Innovative Bio-Mediated Particulate Materials for Sustainable Maritime Transportation Infrastructure
| 项目名称： | Innovative Bio-Mediated Particulate Materials for Sustainable Maritime Transportation Infrastructure |
| 摘要： | Innovative bio-mediated particulate materials may provide great and previously unexplored opportunities as cost-effective and sustainable construction materials for maritime transportation infrastructure. To address this need, and building upon its experience and expertise in the area, this project propose multidisciplinary effort to evaluate the mechanical properties of bio-mediated sandy soils attributable to the formation of microbially-induced calcite precipitation. The mechanical properties of sandy soils in the coastal area often do not satisfy construction expectation for maritime transportation infrastructure. The salty, loose sand makes it difficult for quick construction of port, building and roadway. Sometimes the weakness and unpredictability of soil properties can lead to unexpected collapse. Biological techniques, such as microbially-induced calcite precipitation (MICP), can provide unexplored opportunities for cost-effective, in situ improvement of the engineering properties of sandy soil. As one of the natural process in mineral precipitation, MICP by urea hydrolysis can result in relatively insoluble compounds contributing to soil cementation. Previous research and testing has focused almost exclusively on the standard Ottawa sands due to its uniform pore size. As a result, little is known on the more problematic cases of sandy soils in the coastal area for the bio-mediated soil improvement. The much finer structure and salty condition are two unknown factors for the MICP. |
| 状态： | Completed |
| 资金： | 86250 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 执行机构： | Jackson State University, Jackson |
| 主要研究人员： | Wang, Feng |
| 开始时间： | 20151101 |
| 预计完成日期： | 20170630 |
| 实际结束时间： | 0 |
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