Dry effect of cementitious materials on testing results of X-ray CT

被引：2

作者：

Han, Jiande ^{[1
]}

Sun, Wei ^{[1
]}

Pan, Ganghua ^{[1
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

来源：

TRENDS IN BUILDING MATERIALS RESEARCH, PTS 1 AND 2 | 2012年 / 450-451卷

关键词：

Cementitious materials; Drying; X-ray CT; Gray values; Porosity; TRANSPORT-PROPERTIES; MICROTOMOGRAPHY; MICROSTRUCTURE;

D O I：

10.4028/www.scientific.net/AMR.450-451.187

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study three-dimensional X-ray computed tomography (X-ray CT) is used to investigate the testing results differences of cement paste and mortar before and after drying. It can be found that the mean gray values of paste and mortar before drying are bigger than after drying, and the impact of drying on cement paste is more serious than mortar. In addition, the porosity of non-drying cement paste and mortar is 1.10% and 0.43%, while that of drying cement paste and mortar is 1.55% and 0.70%, respectively. So, the porosity of paste and mortar markedly increases after drying process. The numbers of pores of paste and mortar sharply increase after drying process in particular between 0.01mm(3) and 0.1mm(3). The impact of drying on smaller pores is more serious than bigger pores.

引用

页码：187 / 192

页数：6

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