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

被引：57

作者：

Hu, Chuanlin ^{[1
,2
]}

Ruan, Yunxing ^{[1
,2
]}

Yao, Shun ^{[1
,2
]}

Wang, Fazhou ^{[1
,2
]}

He, Yongjia ^{[1
,2
]}

Gao, Yueyi ^{[3
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architecture, Wuhan, Hubei, Peoples R China

[2] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan, Hubei, Peoples R China

[3] Southeast Univ, Sch Civil Engn, Nanjing, Jiangsu, Peoples R China

来源：

CEMENT & CONCRETE COMPOSITES | 2019年 / 104卷

关键词：

C-S-H gel; Nanoscale elastic properties; Early-age properties; Hydration; CEMENT-BASED MATERIALS; MECHANICAL-PROPERTIES; MOLECULAR-DYNAMICS; ATOMIC-FORCE; NANOINDENTATION; MODULUS; MODEL; QUANTIFICATION; COMPOSITES; MICROSCOPY;

D O I：

10.1016/j.cemconcomp.2019.103342

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页数：5

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