Utilizing a Particle Packing Approach for an Illinois-specific, Nonproprietary, Low-Shrinkage UHPC
| 项目名称： | Utilizing a Particle Packing Approach for an Illinois-specific, Nonproprietary, Low-Shrinkage UHPC |
| 摘要： | Ultra-high-performance concrete (UHPC) is a high-strength construction material with specified durability, workability, ductility, and toughness. Over the past 30 years, UHPC has been used in many diverse applications, including the construction of concrete piles, bridge connections, architectural building components, and blast-mitigating structures. Specifically, UHPC has been used by US departments of transportation in numerous projects, including link slabs, shear keys, nosing for joints, overlays, and concrete bearing stiffeners for steel beams. Considering the high-speed construction, enhanced durability, reduced maintenance cost, decreased elements size and complexity, and improved resiliency of UHPC, its rapid growth is expected in the state of Illinois. The objective of the project is to develop optimum mix designs of UHPC for general use in the state of Illinois. The main goal of pursuing this research is to facilitate the production of non-proprietary UHPC having optimal particle packing and made with locally available materials, which include fine aggregates (e.g., sand, silica powder, and fine quartz), cement, chemical and mineral admixtures, and steel fibers. In fact, to advance UHPC applications in the United States, and specifically in IDOT, two conditions need to be met: the cost of UHPC raw materials must be reduced to less than $1000/yd³, compared to the cost of about $2000/yd³ for prebagged materials, and structural systems must be developed to capitalize on the unique capabilities of UHPC to allow for reduction of member weight by about 50% while maintaining adequate strength and stiffness and preserving the high durability of the material. |
| 状态： | Active |
| 资金： | 312500 |
| 资助组织： | Illinois Department of Transportation |
| 开始时间： | 20210701 |
| 预计完成日期： | 20240630 |
| 主题领域： | Bridges and other structures；Highways；Materials；Pavements |
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