Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 26, Issue 4, Pages 770-773Publisher
JOURNAL WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-011-0308-z
Keywords
calcium silicate hydrate; C/S ratio; morphology; structure; hydrothermal synthesis
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Funding
- National Basic Research Program of China (973 Program) [2009CB623201]
- National Natural Science Foundation of China [51072150]
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The samples of the C-S-H series were synthesized by hydrothermal reaction of fumed silica, CaO and deionized water at initial C/S ratios between 1.0-1.7. Phase composition and structural and morphology characteristics of C-S-H samples were analyzed by XRD, IR and SEM. The experimental results showed that the d-spacing of (002), (110) and (020) decreased, the d-spacing of (200) increased, and the d-spacing of (310) varied randomly, the polymerization of silica tetrahedra of C-S-H decreased, and morphology of C-S-H samples varied from sheet shapes to long reticular fibers as C/S ratio increased.
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