The Crack of Harden Cement Paste Observed with Multi-technique

被引：0
|
作者：
沈卫国
机构：
[1] Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education,Wuhan University of Techoology
[2] School of Materials Science and Engineering,Wuhan University of Technology
来源：
Journal of Wuhan University of Technology(Materials Science) | 2010年 / 06期
关键词：
crack; cement paste; shrinkage; muli technique; multi-scale;
D O I：
暂无
中图分类号：
TU528 [混凝土及混凝土制品];
学科分类号：
0805 ; 080502 ; 081304 ;
摘要：
The shrinkage of the cement paste with low water-cement ratio at different relative humidity was observed and analyzed with ESEM and deformation map technique.The crack morphology was observed with different magnification with SEM and FESEM,and the formation of the crack was observed with AFM between two C-S-H nano particles.The observation by multi technique at multi scale indicated that the shrinkage was increase with the decrease of the humidity due to the increase of the pressure of the capillary pressure,the morphology of the crack in smaller scale was similar to that in the bigger scale,the smaller crack distributed in the latticework of the bigger ones,and the crack propagated along the gap between two nano particles of C-S-H with weaker bonding.
引用
收藏
页码：1057 / 1060
页数：4
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