A remark on nano-particle stability of cement C-S-H gel

• Authors: Tomáš Ficker , Adél Len , Dalibor Martišek
• Languages of publication: EN

Abstracts

EN

Hydrated pastes of ordinary Portland cement prepared with different water-to-cement ratios were investigated by using the small-angle neutron scattering technique in the region of Q ∈ (0.0045, 0.11) Å−1. Samples of cement pastes were subjected to non-standard hydration conditions using a mix with D2O, low RH, and water-to-cement ratios spread over a very wide interval (0.4; 1.4). The investigation was focused on testing the structural stability of nano-metric particles in the cement C-S-H gel. Owing to the high structural stability of these nano-particles, their average diameter might be used as a microscopic parameter characterizing the nano-metric structure of C-S-H gels. The average diameter of the nano-particles of the studied ordinary Portland cement CEMI 42.5 R-SC was found to be close to the value of 4.2 nm and independent of the water-to-cement ratios.

Keywords

EN

hydrated cement paste; calcium-silicate-hydrate; small-angle neutron scattering; nano-particles

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2011
• Volume: 9
• Issue: 2
• Pages: 553-557

Dates

published

1 - 4 - 2011

online

20 - 2 - 2011

Contributors

author

Tomáš Ficker

• Faculty of Civil Engineering, Physics Department, Brno University of Technology, Veveří 95, 602 00, Brno, Č.R.

author

Adél Len

• Budapest Neutron Centre, Konkoly Thege 29-33, H-1525, Budapest, Hungary

author

Dalibor Martišek

• Faculty of Mechanical Engineering, Mathematics Department, Brno University of Technology, Technická 2, 616 62, Brno, Č.R.

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Identifiers

DOI

10.2478/s11534-010-0028-6