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The impact of VMA on the rheology, thixotropy and robustness of self-compacting mortars

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Abstract
Due to the higher sensitivity of fresh self-compacting concrete (SCC) to small variations in the mix proportions - also referred to as a lower robustness - applications with SCC are still limited. Because viscosity modifying admixtures (VMAs) are often reported to increase the robustness of SCC, the relationship between robustness, rheological characteristics, and thixotropic build-up of self-compacting mortars is examined with an experimental program. The robustness with regard to small variations in the water dosage is measured together with the rheological and thixotropic properties of mortars made with various admixtures (purified attagulgite clay, diutan gum, corn starch, and propylene carbonate). Based on those results, the possible connections between the rheology, thixotropy and robustness of self-compacting mortar were evaluated.
Keywords
CONSOLIDATING CONCRETE, CEMENT, PASTES, AGENT, FRESH, SCC

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Citation

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Chicago
Van Der Vurst, Farid, Steffen Grünewald, and Geert De Schutter. 2015. “The Impact of VMA on the Rheology, Thixotropy and Robustness of Self-compacting Mortars.” In Calcined Clays for Sustainable Concrete , ed. Karen Scrivener and Aurélie Favier, 10:159–167. Dordrecht, the Netherlands: Springer.
APA
Van Der Vurst, F., Grünewald, S., & De Schutter, G. (2015). The impact of VMA on the rheology, thixotropy and robustness of self-compacting mortars. In Karen Scrivener & A. Favier (Eds.), CALCINED CLAYS FOR SUSTAINABLE CONCRETE (Vol. 10, pp. 159–167). Presented at the 1st International Conference on Calcined Clays for Sustainable Concrete, Dordrecht, the Netherlands: Springer.
Vancouver
1.
Van Der Vurst F, Grünewald S, De Schutter G. The impact of VMA on the rheology, thixotropy and robustness of self-compacting mortars. In: Scrivener K, Favier A, editors. CALCINED CLAYS FOR SUSTAINABLE CONCRETE . Dordrecht, the Netherlands: Springer; 2015. p. 159–67.
MLA
Van Der Vurst, Farid, Steffen Grünewald, and Geert De Schutter. “The Impact of VMA on the Rheology, Thixotropy and Robustness of Self-compacting Mortars.” Calcined Clays for Sustainable Concrete . Ed. Karen Scrivener & Aurélie Favier. Vol. 10. Dordrecht, the Netherlands: Springer, 2015. 159–167. Print.
@inproceedings{6975440,
  abstract     = {Due to the higher sensitivity of fresh self-compacting concrete (SCC) to small variations in the mix proportions - also referred to as a lower robustness - applications with SCC are still limited. Because viscosity modifying admixtures (VMAs) are often reported to increase the robustness of SCC, the relationship between robustness, rheological characteristics, and thixotropic build-up of self-compacting mortars is examined with an experimental program. The robustness with regard to small variations in the water dosage is measured together with the rheological and thixotropic properties of mortars made with various admixtures (purified attagulgite clay, diutan gum, corn starch, and propylene carbonate). Based on those results, the possible connections between the rheology, thixotropy and robustness of self-compacting mortar were evaluated.},
  author       = {Van Der Vurst, Farid and Gr{\"u}newald, Steffen and De Schutter, Geert},
  booktitle    = {CALCINED CLAYS FOR SUSTAINABLE CONCRETE },
  editor       = {Scrivener, Karen and Favier, Aur{\'e}lie},
  isbn         = {978-94-017-9938-6},
  issn         = {2211-0844 },
  language     = {eng},
  location     = {Zurich, SWITZERLAND },
  pages        = {159--167},
  publisher    = {Springer},
  title        = {The impact of VMA on the rheology, thixotropy and robustness of self-compacting mortars},
  url          = {http://dx.doi.org/10.1007/978-94-017-9939-3},
  volume       = {10},
  year         = {2015},
}

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