Cavitation Treatment of Nano and Micro Filler and Its Effect on the Properties of UHPC

Ultra-High Performance Concrete and Nanotechnology in Construction: Proceedings of HiPerMat 2012, 3rd International Symposium on UHPC and Nanotechnology for High Performance Construction Materials 2012
Jānis Justs, Genādijs Šahmenko, Viktors Mironovs, Patricija Kara

The effect of cavitation treatment of micro and nano fillers in relation to ultra-high performance concrete (UHPC) was investigated in this paper. Specially designed and patented apparatus was applied to create turbulent flow and employ hydrodynamic cavitation process as a tool for silica fume micro and nano particle agglomerate disaggregation and surface activation. Silica fume/water slurry at the ratio 1 : 2 was subjected to the impact of the hydrodynamic cavitation process. UHPC mixes with optimized particle packing were designed in order to evaluate effect of specially treated silica fume on the mechanical properties of the UHPC. Due to the cavitation treatment the agglomerates disaggregated into nano and micro particles and uniform suspension in water was obtained and incorporated into the UHPC mix.

Keywords
UHPC, microsilica dispersion, cavitation
Hyperlink
http://www.uni-kassel.de/upress/online/frei/978-3-86219-264-9.volltext.frei.pdf, http://books.google.co.uk/books?id=LufCDwJ-sacC&pg=PA87

Justs, J., Šahmenko, G., Mironovs, V., Kara, P. Cavitation Treatment of Nano and Micro Filler and Its Effect on the Properties of UHPC. In: Ultra-High Performance Concrete and Nanotechnology in Construction: Proceedings of HiPerMat 2012, 3rd International Symposium on UHPC and Nanotechnology for High Performance Construction Materials, Germany, Kassel, 7-9 March, 2012. Kassel: Kassel University Press, 2012, pp.87-92. ISBN 978-3-86219-264-9. e-ISBN 978-3-86219-265-6.

Publication language
English (en)