Soil-Recycled Aggregate-Geopolymer Road Base/Subbase Mixtures - Step Towards Sustainability
| 项目名称： | Soil-Recycled Aggregate-Geopolymer Road Base/Subbase Mixtures - Step Towards Sustainability |
| 摘要： | The proposed study focuses on the development and evaluation of sustainable Soil-Recycled Aggregate-Geopolymer (Soil-RAG-GP) mixtures for road base and subbase layers. In order to develop Soil-RAG-GP stabilized road base materials, various types of Class F fly ash, soil types, and activation agents (such as sodium hydroxide and sodium silicate) will be tested. The mechanical characteristics of the Soil-RAG-GP mixtures depend on various mix constituents, as well as the curing period and temperatures. Based on various combinations of variables, a statistical-based partial factorial experimental design will be developed to minimize mechanical testing. Unconfined Compressive strength, elastic and dynamic modulus, flexural, durability and shrinkage characteristics will be evaluated using standard test procedures. In addition to mechanical testing, oxide analyses and SEM micrographs will also be studied to understand the basic morphology and microstructure of Soil-RAG-GP to investigate the extent of Geopolymer reactions and strength gain mechanism with time. The mixes will be cured at various temperatures before testing. The strength and modulus tests results will be compiled, and preliminary statistical model will be developed to relate the strength with mix variables. The model will assist in sensitivity analysis of variables and determine the optimum/practical mix design parameters to be used in base/subbase layers. The developed �green� Geopolymer-based soil base/subbase materials will exhibit durability, high performance, and environment-friendly, and sustainability characteristics. |
| 状态： | Completed |
| 资金： | 89148 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Transportation Consortium of South-Central States |
| 项目负责人： | Hassan, Marwa M |
| 执行机构： | University of Louisiana at Lafayette |
| 主要研究人员： | Khattak, Mohammad |
| 开始时间： | 20180315 |
| 预计完成日期： | 20190915 |
| 实际结束时间： | 20190915 |
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