Nondestructive microstructure analysis of the carbonation evolution process in hardened binder paste containing blast-furnace slag by X-ray CT

被引：3
作者：
Han Jiande [1 ,2 ,3 ]
Sun Wei [2 ,3 ]
Pan Ganghua [2 ,3 ]
机构：
[1] Nanjing Univ Technol, Coll Civil Engn, Nanjing 211816, Jiangsu, Peoples R China
[2] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China
[3] Jiangsu Key Lab Construct Mat, Nanjing 211189, Jiangsu, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2013年 / 28卷 / 05期
基金：
中国国家自然科学基金;
关键词：
XCT; hardened binder paste; blast furnace slag; carbonation; gray values; pore structure; PORE STRUCTURE; MICROTOMOGRAPHY;
D O I：
10.1007/s11595-013-0800-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We used micro-XCT(X-ray computed tomography) to in-situ investigate the microstructure evolution of hardened binder paste containing different contents (0%, 30%, 50% and 70%) of blast-furnace slag at different carbonation time (0, 3, 7 and 14 days), respectively. The carbonation front shape, the degrees of carbonation and cracks spatial distribution were studied for hardened binder paste containing BFS. In addition, the porosity and pore volume distribution of macro-pore were measured at different carbonation ages. The results reveal that the degree of carbonation at different times can be measured by the volume fraction of the uncarbonated and carbonated parts.
引用
收藏
页码：955 / 962
页数：8
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