Influence of Casting Conditions on Durability and Structural Performance of HPC-AR
| 项目名称： | Influence of Casting Conditions on Durability and Structural Performance of HPC-AR |
| 摘要： | The main objective of this project is to extend the understanding of dynamic segregation of self-consolidating concrete (SCC). Dynamic segregation is the separation of coarse aggregates from the mortar during flow, which can negatively affect the performance of concrete. By means of a modified version of the tilting box test, the dynamic segregation of SCC can be monitored over different cycles at different cycle times. A workability box for good stability has been proposed in literature. The proposed project aims to extend this workability box principle for different flow distances (number of cycles) and different concrete compositions. From previous studies, the paste volume (or mortar volume) in concrete appeared a critical factor. The laboratory research will be continued in an industrial setting. The testing parameters in the tilting box (number of cycles and duration of cycles) will be coupled to the flow distance and flow velocity in real formworks. Furthermore, the dynamic segregation index will be related to a reduction in concrete performance, in terms of mechanical properties and durability of the concrete, and bond strength with the rebars or prestress strands. Based on the outcome of the research, performance specifications, in terms of fresh concrete properties, will be developed and the robustness to small variations in constituent elements of a typical, well-performing SCC mixture will be investigated. |
| 状态： | Completed |
| 资金： | 120614.00 |
| 资助组织： | Research on Concrete Applications for Sustainable Transportation (RE-CAST) |
| 项目负责人： | Feys, Dimitri |
| 执行机构： | Research on Concrete Applications for Sustainable Transportation (RE-CAST) |
| 主要研究人员： | Feys, Dimitri |
| 开始时间： | 20150101 |
| 预计完成日期： | 20180630 |
| 实际结束时间： | 0 |
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