Location of Aluminum in Substituted Calcium Silicate Hydrate (C‐S‐H) Gels as Determined by 29Si and 27Al NMR and EELS

Solid-state 27 Al and 29 Si magic angle spinning NMR spectroscopy has been combined with electron energy loss spectroscopy carried out in the transmission electron microscope to determine the location of Al substituting in a semicrystalline C-S-H gel present in a hydrated synthetic slag glass. The gel is found to contain mainly pentameric silicate chains in which the central silicon is substituted by aluminum

[1]  I. Richardson,et al.  The incorporation of minor and trace elements into calcium silicate hydrate (CSH) gel in hardened cement pastes , 1993 .

[2]  I. Richardson,et al.  Microstructure and microanalysis of hardened cement pastes involving ground granulated blast-furnace slag , 1992 .

[3]  S. Komarneni,et al.  Substituted Tobermorites: 27Al and 29Si MASNMR, Cation Exchange, and Water Sorption Studies , 1991 .

[4]  J. Klinowski,et al.  Kaolinite as a convenient standard for setting the Hartmann-Hahn match for 29Si CP/MAS NMR of silicates , 1990 .

[5]  S. Komarneni,et al.  Selective cation exchange in substituted tobermorites , 1989 .

[6]  C. Dobson,et al.  Hydration of Tricalcium Silicate Followed by 29Si NMR with Cross‐Polarization , 1988 .

[7]  S. Komarneni,et al.  Naturally occurring 1.4 nm tobermorite and synthetic jennite: Characterization by 27Al and 29Si MASNMR spectroscopy and cation exchange properties , 1987 .

[8]  H. Stade,et al.  On the coordination of Al in ill-crystallized C-S-H phases formed by hydration of tricalcium silicate and by precipitation reactions at ambient temperature , 1987 .

[9]  H. Taylor.  Proposed Structure for Calcium Silicate Hydrate Gel , 1986 .

[10]  G. W. Groves,et al.  Transmission Electron Microscopy and Microanalytical Studies of Ion-Beam-Thinned Sections of Tricalcium Silicate Paste , 1986 .

[11]  Rustum Roy,et al.  27Al and29Si magic angle spinning nuclear magnetic resonance spectroscopy of Al-substituted tobermorites , 1985 .

[12]  J. Taftø,et al.  Electron energy loss near edge structure (ELNES), a potential technique in the studies of local atomic arrangements , 1982 .