Small-angle neutron scattering on hardened cement paste and various substances for hydration

Häuβler, F.; Eichhorn, F.; Baumbach, H.

doi:10.1016/0008-8846(94)90140-6

Cited by 6 publications

(1 citation statement)

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“…In addition to papers [14][15][16][17][18][19][20][21][22], which deal with various aspects of the fractal nano-structure of C-S-H cement gel, they also published a series of papers [23][24][25][26] concerning the structure of cement paste hydrated under influence of carbonation. This is especially relevant from the viewpoint of technological practice since concrete structures are exposed to a long-lasting action of carbon dioxide present in normal air during their service life, and this has negative consequences for structural durability and strength.…”

Section: Sas Techniquementioning

confidence: 99%

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

Ficker¹,

Len²,

Martišek³

2011

Open Physics

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Abstract: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 D 2 O, 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. PACS

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