Behavior of multi-walled carbon nanotubes on the porosity and microstructure of cement-based materials

被引：276

作者：

Nochaiya, Thanongsak ^{[1
]}

Chaipanich, Arnon ^{[1
]}

机构：

[1] Chiang Mai Univ, Fac Sci, Dept Phys & Mat Sci,Cement & Concrete Res Lab, Adv Cement Based Mat Res Unit, Chiang Mai 50200, Thailand

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 06期

关键词：

Cement; Carbon nanotubes; Nano additives; Microstructure; Mercury intrusion porosimetry; MECHANICAL-PROPERTIES; COMPOSITES; SURFACE; PASTES; TOUGHNESS; ADDITIVES; STRENGTH; MWNTS;

D O I：

10.1016/j.apsusc.2010.09.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The porosity and microstructure of a Portland cement-multi-walled carbon nanotube composite were investigated. Multi-walled carbon nanotubes (CNTs), up to 1 wt.% of cement, synthesized by infusion chemical vapor deposition, and Portland cement type I (PC) were used to produce pastes with a water to cement ratio of 0.5. Mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM) were used to characterize Portland cement-CNTs systems. MIP analysis of the results indicates that total porosity of the mixes with CNTs was found to decrease with increasing CNTs content. Moreover, an important effect of additional CNTs was a reduction in the number of mesopores, while SEM technique showed dispersion of CNTs between the hydration phases of Portland cement pastes. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1941 / 1945

页数：5

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