Investigation on the Mechanisms Governing the Robustness of Self-Compacting Concrete at Paste Level

F van der Vurst, Karel Lesage, Steffen Grunewald, Lucie Vandewalle, John Vantomme, G Schutter

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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.
Original languageEnglish
Title of host publicationProceedings 8th International RILEM Symposium on Self-Compacting Concrete
EditorsKamal H. Khayat
PublisherRILEM publications S.A.R.L
Pages143-155
Number of pages13
ISBN (Electronic)978-2-35158156-8
Publication statusPublished - 2016
Event8th International RILEM Symposium on Self-Compacting Concrete, Kamal - Washington, United States
Duration: 15 May 201618 May 2016
Conference number: 8

Conference

Conference8th International RILEM Symposium on Self-Compacting Concrete, Kamal
Abbreviated titleSCC 2016
CountryUnited States
CityWashington
Period15/05/1618/05/16

Keywords

  • SCC
  • self-compacting concrete
  • Robustness
  • Sensitivity
  • Rheoiogy
  • Storage Moduiiis

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    van der Vurst, F., Lesage, K., Grunewald, S., Vandewalle, L., Vantomme, J., & Schutter, G. (2016). Investigation on the Mechanisms Governing the Robustness of Self-Compacting Concrete at Paste Level. In K. H. Khayat (Ed.), Proceedings 8th International RILEM Symposium on Self-Compacting Concrete (pp. 143-155). RILEM publications S.A.R.L.