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

被引：7

作者：

Ficker, Tomas ^{[1
]}

Len, Adel ^{[2
]}

Martisek, Dalibor ^{[3
]}

机构：

[1] Brno Univ Technol, Fac Civil Engn, Dept Phys, Brno 60200, Czech Republic

[2] Budapest Neutron Ctr, H-1525 Budapest, Hungary

[3] Brno Univ Technol, Fac Mech Engn, Dept Math, Brno 61662, Czech Republic

来源：

CENTRAL EUROPEAN JOURNAL OF PHYSICS | 2011年 / 9卷 / 02期

关键词：

hydrated cement paste; calcium-silicate-hydrate; small-angle neutron scattering; nano-particles; MICROPORE SIZE ANALYSIS; CALCIUM-SILICATE-HYDRATE; X-RAY; FRACTAL MICROSTRUCTURES; PASTE; SCATTERING; EVOLUTION; SURFACE; POROSITY; SANS;

D O I：

10.2478/s11534-010-0028-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 a (0.0045, 0.11) (-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.

引用

页码：553 / 557

页数：5

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