Abstract
In spite of the many advantages, the use of self-compacting concrete
(SCC) is currently widely limited to application in precast factories and sihiations
in which external vibration would cause large difficulties. One of the main
limitations is the higher sensitivity to small variations in mix proportions, material characteristics and procedures, also referred to as the lower robustness of SCC compared to vibrated concrete. This paper investigates the mechanisms governing the robustness at paste level. Phenomenological aspects are examined for a series of paste mixtures varying in water film thickness and superplasticizer-to-powder ratio. The impact of small variations in the water content on the early-age structural buildup and the robustness of the paste rheology is investigated using rotational and oscillating rheometiy.
(SCC) is currently widely limited to application in precast factories and sihiations
in which external vibration would cause large difficulties. One of the main
limitations is the higher sensitivity to small variations in mix proportions, material characteristics and procedures, also referred to as the lower robustness of SCC compared to vibrated concrete. This paper investigates the mechanisms governing the robustness at paste level. Phenomenological aspects are examined for a series of paste mixtures varying in water film thickness and superplasticizer-to-powder ratio. The impact of small variations in the water content on the early-age structural buildup and the robustness of the paste rheology is investigated using rotational and oscillating rheometiy.
Original language | English |
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Title of host publication | Proceedings 8th International RILEM Symposium on Self-Compacting Concrete |
Editors | Kamal H. Khayat |
Publisher | RILEM Publications S.A.R.L. |
Pages | 143-155 |
Number of pages | 13 |
ISBN (Electronic) | 978-2-35158156-8 |
Publication status | Published - 2016 |
Event | 8th International RILEM Symposium on Self-Compacting Concrete, Kamal - Washington, United States Duration: 15 May 2016 → 18 May 2016 Conference number: 8 |
Conference
Conference | 8th International RILEM Symposium on Self-Compacting Concrete, Kamal |
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Abbreviated title | SCC 2016 |
Country/Territory | United States |
City | Washington |
Period | 15/05/16 → 18/05/16 |
Keywords
- SCC
- self-compacting concrete
- Robustness
- Sensitivity
- Rheoiogy
- Storage Moduiiis