Influence of nano-SiO<sub>2</sub> on the Portland cement pastes: Fid-Bau Portal

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Influence of nano-SiO₂ on the Portland cement pastes

Stefanidou, M. / Papayianni, I.

The evolution of nanotechnology provides materials with new properties and over the last years a lot of effort has been put to introduce nano-particles into cement pastes in order to improve their properties and to produce materials of better performance. In the present research work, nano-SiO₂ produced by pyrolysis and with specific area of 200 m²/g has been added at different percentages (0%, 0.5%, 1%, 2% and 5%) to high-strength cement pastes. These pastes were tested for their mechanical and structural properties at different ages. Nanoparticles act as nuclei for crystallization and large, idiomorphic crystals of Ca-Si composition were formed assisting, up to a certain percentage, in producing materials with dense structure, reduced porosity and improved strength.

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Influence of nano-SiO₂ on the Portland cement pastes

Stefanidou, M. / Papayianni, I.

The evolution of nanotechnology provides materials with new properties and over the last years a lot of effort has been put to introduce nano-particles into cement pastes in order to improve their properties and to produce materials of better performance. In the present research work, nano-SiO₂ produced by pyrolysis and with specific area of 200 m²/g has been added at different percentages (0%, 0.5%, 1%, 2% and 5%) to high-strength cement pastes. These pastes were tested for their mechanical and structural properties at different ages. Nanoparticles act as nuclei for crystallization and large, idiomorphic crystals of Ca-Si composition were formed assisting, up to a certain percentage, in producing materials with dense structure, reduced porosity and improved strength.

Influence of nano-SiO₂ on the Portland cement pastes

Stefanidou, M. / Papayianni, I.

The evolution of nanotechnology provides materials with new properties and over the last years a lot of effort has been put to introduce nano-particles into cement pastes in order to improve their properties and to produce materials of better performance. In the present research work, nano-SiO₂ produced by pyrolysis and with specific area of 200 m²/g has been added at different percentages (0%, 0.5%, 1%, 2% and 5%) to high-strength cement pastes. These pastes were tested for their mechanical and structural properties at different ages. Nanoparticles act as nuclei for crystallization and large, idiomorphic crystals of Ca-Si composition were formed assisting, up to a certain percentage, in producing materials with dense structure, reduced porosity and improved strength.

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Title:

Influence of nano-SiO₂ on the Portland cement pastes

Contributors:

Stefanidou, M. (author) / Papayianni, I. (author)

Published in:

Composites, Part B: Engineering ; 43 ; 2706-2710

Publication date:

2012

Size:

5 Seiten

ISSN:

DOI:

https://doi.org/10.1016/j.compositesb.2011.12.015

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Zementpaste , Portlandzement , Nanopartikel , Pyrolyse , Hochfestigkeit , spezifische Oberfläche , Kristallkeim , strukturelle Eigenschaft , Siliciumdioxid , Porosität

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