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UHPC containing nanoparticles synthesized by sol-gel method
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| Abstract |
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| Sol-gel technology is an alternative method for producing nanoparticles. This paper deals with preparing UHPC mixes by using amorphous silicium dioxide nanoparticles specially synthesized by applying the sol-gel method. Grading of used micro and nano components was carried out by Dynamic Light Scattering (DLS) method. The studied micro and nanoparticles have dimensions in the range from 30 to 600 nm. Proportions of filler components were selected by taking into account optimal packing models. Experimental part of research includes preparation of the mix containing traditional UHPC ingredients (Portland cement, quartz filler, silica fume) and nanoparticles synthesized by sol-gel technology in amount up to 1% of cement. Influence of nanoparticles on concrete properties was studied. Mineralogical composition of UHPC matrix was examined by X-ray method. After summarizing the results it may be concluded that incorporation of the small amount of nano sized silicium dioxide nanoparticles synthesized by sol-gel technology slightly decreases compressive strength in early hardening period (7 days in normal conditions) and increases strength after intensive curing (+90 ºC for 3 days). |
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English
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Ultra-High Performance Concrete and Nanotechnology in Construction: Proceedings of HiPerMat 2012, 3rd International Symposium on UHPC and Nanotechnology for High Performance Construction Materials, 7-9 March 2012, Kassel, Germany | |
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Kassel : Kassel University Press, 2012
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978-3-86219-264-9
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p. 79-85
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