Nanoscale Modification of Cementitious Materials

被引：96
|
作者：
Shah, S. P. [1 ]
Konsta-Gdoutos, M. S. [2 ]
Metaxa, Z. S. [1 ,2 ]
Mondal, P. [3 ]
机构：
[1] Northwestern Univ, Ctr Adv Cement Based Mat, Dept Civil & Environm Engn, Evanston, IL 60208 USA
[2] Democritus Univ Thrace, Sch Engn, Dept Civil Engn, Xanthi, Greece
[3] Univ Illinois, Dept Civil & Environm Engn, Chicago, IL 60680 USA
来源：
NANOTECHNOLOGY IN CONSTRUCTION 3, PROCEEDINGS | 2009年
关键词：
MECHANICAL-PROPERTIES; CARBON NANOTUBES; MICROSTRUCTURE;
D O I：
10.1007/978-3-642-00980-8_16
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This research investigates changes in the nanostructure and the nano-scale local mechanical properties of cement paste with micro- and nano-modifiers. Silica fume and multiwall carbon nanotubes (MWCNTs) were used as micro- and nano-modifiers. An effective method of dispersing CNTs in cement matrix was developed. A detailed study on the effects of CNTs concentration and aspect ratio on the fracture properties, nanoscale properties and microstructure of nanocomposite materials, was conducted. Significant improvements on the macro and nano-mechanical properties of cement paste were observed with the incorporation of CNTs. Results suggest that CNTs can strongly modify and reinforce the cement paste matrix at the nanoscale.
引用
收藏
页码：125 / +
页数：2
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