Insight into the evolution of the elastic properties of calcium-silicate-hydrate (C-S-H) gel

Calcium-silicate-hydrate (C-S-H) gel is the most important product of cement hydration and the only phase with the evolving microstructure in cement-based materials. Previously, extensive researches have adopted nanoindentation to investigate the mechanical properties of various C-S-H gels at mature...

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Bibliographic Details
Published in:Cement & concrete composites 2019-11, Vol.104, p.103342, Article 103342
Main Authors: Hu, Chuanlin, Ruan, Yunxing, Yao, Shun, Wang, Fazhou, He, Yongjia, Gao, Yueyi
Format: Article
Language:English
Subjects:
C-S-H gel
Early-age properties
Hydration
Nanoscale elastic properties
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Summary:Calcium-silicate-hydrate (C-S-H) gel is the most important product of cement hydration and the only phase with the evolving microstructure in cement-based materials. Previously, extensive researches have adopted nanoindentation to investigate the mechanical properties of various C-S-H gels at mature ages, revealing two packing morphologies of C-S-H gels (i.e. loose-packed C-S-H and dense-packed C-S-H). However, the study on the early-age formed C-S-H gel is rare, resulting in the poor understanding on the evolution of the mechanical properties of C-S-H gel. The study adopts nanoindentation and dynamic modulus mapping to investigate the C-S-H gel formed by C3S hydration and give an insight into the evolution of the elastic properties of C-S-H gel.
ISSN:0958-9465
1873-393X
DOI:10.1016/j.cemconcomp.2019.103342