Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calcium silicate hydrate (C-S-H) gel is the principal reaction product of portland cement and water. C-S-H gel is believed to have a layered structure; however, a precise structure of C-S-H has not been determined yet, because of the lack of long-range crystallinity. High-resolution electron microscopy study of calcium silicate hydrate (C-S-H) gels in ordinary portland cement (OPC) and a slag/OPC blend has been performed. Nanocrystalline regions on the scale of about 5 nm or less in C-S-H are found in both cement pastes, and they are formed after a curing time as brief as 7 d. A change in the d-spacing of the nanocrystalline regions with time is observed for the first time, which is believed to correspond to the development of C-S-H with time. The nanoheterogeneous nature of C-S-H is demonstrated and correlated to the strong Ca:Si ratio fluctuations that are observed.
Calcium silicate hydrate (C-S-H) gel is the principal reaction product of portland cement and water. C-S-H gel is believed to have a layered structure; however, a precise structure of C-S-H has not been determined yet, because of the lack of long-range crystallinity. High-resolution electron microscopy study of calcium silicate hydrate (C-S-H) gels in ordinary portland cement (OPC) and a slag/OPC blend has been performed. Nanocrystalline regions on the scale of about 5 nm or less in C-S-H are found in both cement pastes, and they are formed after a curing time as brief as 7 d. A change in the d-spacing of the nanocrystalline regions with time is observed for the first time, which is believed to correspond to the development of C-S-H with time. The nanoheterogeneous nature of C-S-H is demonstrated and correlated to the strong Ca:Si ratio fluctuations that are observed.
Nanostructure of calcium silicate hydrate gels in cement paste
Nanostruktur von Calciumsilicathydrat-Gelen in Zementpaste
Journal of the American Ceramic Society ; 83 ; 2600-2604
2000
5 Seiten, 4 Bilder, 21 Quellen
Aufsatz (Zeitschrift)
Englisch
Restoration of Degraded Calcium-Silicate-Hydrate in Calcium-Leached Cement Paste
| Springer Verlag | 2023
Model for the microstructure of calcium silicate hydrate in cement paste
| Tema Archiv | 2000
Microstructural Investigation of Carbonation of Calcium Silicate Hydrate in Hydrated Cement Paste
| British Library Conference Proceedings | 2011
A model for the microstructure of calcium silicate hydrate in cement paste
| British Library Online Contents | 2000
PAPERS - A model for the microstructure of calcium silicate hydrate in cement paste
| Online Contents | 2000