Effect of entrapped and entrained air on the workability and rheology of cementitious materials
- Author
- Jeroen Dils (UGent) , Veerle Boel (UGent) , Salima Aggoun, Abdelhak Kaci and Geert De Schutter (UGent)
- Organization
- Abstract
- The influence of air on the fresh properties of cementitious materials is still a point of discussion in concrete research. On the one hand, fluctuations of entrapped air can change the predicted properties in an undesirable way. On the other hand, it is known that the addition of air entrainment changes the rheology significantly. A profound research on the impact of different methods to change the air content, is necessary. We investigated the influence of vacuum mixing and air entrainment on the workability of paste and mortar. For self-compacting mortar also the influence on the rheology was examined. For vibrated paste and self-compacting mortar a clear decrease of the workability is determined when air is added. This was also found for the rheology of self-compacting mortar. In case of vibrated mortar an overall increase of the workability occurred, when the air content increased. In conclusion, vacuum mixing can control the air content and changes the workability and rheology in an acceptable way. A more important change of the slump flow and, if determined, the rheology, is obtained by air entrainment. Further research should be performed on the influence of air on the worability and the rheology of ultra-high performance concrete.
- Keywords
- workability, rheology, Vacuum mixing, entrained air
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-4145682
- MLA
- Dils, Jeroen, et al. “Effect of Entrapped and Entrained Air on the Workability and Rheology of Cementitious Materials.” Rheology and Processing of Construction Materials, Proceedings, edited by Nicolas Roussel and Hela Bessaies-Bey, vol. PRO 90, RILEM Publications S.A.R.L., 2013, pp. 179–88.
- APA
- Dils, J., Boel, V., Aggoun, S., Kaci, A., & De Schutter, G. (2013). Effect of entrapped and entrained air on the workability and rheology of cementitious materials. In N. Roussel & H. Bessaies-Bey (Eds.), Rheology and Processing of Construction Materials, Proceedings: Vol. PRO 90 (pp. 179–188). Bagneux, France: RILEM Publications S.A.R.L.
- Chicago author-date
- Dils, Jeroen, Veerle Boel, Salima Aggoun, Abdelhak Kaci, and Geert De Schutter. 2013. “Effect of Entrapped and Entrained Air on the Workability and Rheology of Cementitious Materials.” In Rheology and Processing of Construction Materials, Proceedings, edited by Nicolas Roussel and Hela Bessaies-Bey, PRO 90:179–88. Bagneux, France: RILEM Publications S.A.R.L.
- Chicago author-date (all authors)
- Dils, Jeroen, Veerle Boel, Salima Aggoun, Abdelhak Kaci, and Geert De Schutter. 2013. “Effect of Entrapped and Entrained Air on the Workability and Rheology of Cementitious Materials.” In Rheology and Processing of Construction Materials, Proceedings, ed by. Nicolas Roussel and Hela Bessaies-Bey, PRO 90:179–188. Bagneux, France: RILEM Publications S.A.R.L.
- Vancouver
- 1.Dils J, Boel V, Aggoun S, Kaci A, De Schutter G. Effect of entrapped and entrained air on the workability and rheology of cementitious materials. In: Roussel N, Bessaies-Bey H, editors. Rheology and Processing of Construction Materials, Proceedings. Bagneux, France: RILEM Publications S.A.R.L.; 2013. p. 179–88.
- IEEE
- [1]J. Dils, V. Boel, S. Aggoun, A. Kaci, and G. De Schutter, “Effect of entrapped and entrained air on the workability and rheology of cementitious materials,” in Rheology and Processing of Construction Materials, Proceedings, Paris, France, 2013, vol. PRO 90, pp. 179–188.
@inproceedings{4145682, abstract = {{The influence of air on the fresh properties of cementitious materials is still a point of discussion in concrete research. On the one hand, fluctuations of entrapped air can change the predicted properties in an undesirable way. On the other hand, it is known that the addition of air entrainment changes the rheology significantly. A profound research on the impact of different methods to change the air content, is necessary. We investigated the influence of vacuum mixing and air entrainment on the workability of paste and mortar. For self-compacting mortar also the influence on the rheology was examined. For vibrated paste and self-compacting mortar a clear decrease of the workability is determined when air is added. This was also found for the rheology of self-compacting mortar. In case of vibrated mortar an overall increase of the workability occurred, when the air content increased. In conclusion, vacuum mixing can control the air content and changes the workability and rheology in an acceptable way. A more important change of the slump flow and, if determined, the rheology, is obtained by air entrainment. Further research should be performed on the influence of air on the worability and the rheology of ultra-high performance concrete.}}, author = {{Dils, Jeroen and Boel, Veerle and Aggoun, Salima and Kaci, Abdelhak and De Schutter, Geert}}, booktitle = {{Rheology and Processing of Construction Materials, Proceedings}}, editor = {{Roussel, Nicolas and Bessaies-Bey, Hela}}, isbn = {{9782351581377}}, keywords = {{workability,rheology,Vacuum mixing,entrained air}}, language = {{eng}}, location = {{Paris, France}}, pages = {{179--188}}, publisher = {{RILEM Publications S.A.R.L.}}, title = {{Effect of entrapped and entrained air on the workability and rheology of cementitious materials}}, volume = {{PRO 90}}, year = {{2013}}, }