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论文类型：期刊论文

发表时间：2012-11-01

发表刊物：JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY

收录刊物：SCIE、EI、PubMed、Scopus

卷号：12

期号：11

页面范围：8415-8419

ISSN号：1533-4880

关键字：Carbon Nanotubes; Portland Cement; Morphological Properties

摘要：The morphological properties of the multi-walled carbon nanotubes (MWCNTs) reinforced Portland cement composites were investigated. MWCNTs with addition of up to 0.15 wt% of cement were incorporated to Portland cement with a water to cement ratio of 0.35. The porosity and pore size distribution of the composites were measured by mercury intrusion porosimetry (MIP), and the results indicate that the cement doped with MWCNTs obtained lower porosity and concentrated pore size distribution. The microstructure was analyzed by field emission scanning electron microscopy (FE SEM) and energy dispersive spectroscopy (EDS). It is shown that MWCNTs act as bridges and networks across cracks and voids.