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Transmission Electron Microscopy and Microanalytical Studies of Ion‐Beam‐Thinned Sections of Tricalcium Silicate Paste
Author(s) -
GROVES G. W.,
SUEUR P. J.,
SINCLAIR W.
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb04746.x
Subject(s) - calcium silicate hydrate , microanalysis , materials science , carbonation , microstructure , transmission electron microscopy , amorphous solid , silicate , calcite , mineralogy , hydrate , scanning electron microscope , focused ion beam , cement , calcium silicate , ion , composite material , analytical chemistry (journal) , chemical engineering , crystallography , chemistry , nanotechnology , organic chemistry , engineering , chromatography
Mature tricalcium silicate cement pastes were examined in ion‐beam‐thinned sections. The microstructure consisted of very homogeneous amorphous hydrate gel surrounding residual unhydrated cores of tricalcium silicate, these regions being linked by a fibrillar outer hydration product. Carbonation had produced microcrystals of calcite within the outer product only. X‐ray microanalysis gave Ca: Si ratios for the hydrate regions which showed considerable deviations but were‐on average in fairly good agreement with indirectly determined Ca: Si ratios of pastes of the same material. There was no significant difference in composition between inner and outer hydration products.