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Title: Distribution of Carbon Nanofibers and Nanotubes in Cementitious Composites
Accession Number: 01157610
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Carbon nanofibers (CNFs) and nanotubes (CNTs) are known to be extremely strong and stiff, and their potential as reinforcement has been of interest to many investigators in the past decade. One of the most important keys for fully harnessing the properties of any type of fiber is to control the distribution in the material matrix. As far as CNFs–CNTs are concerned, the strong attraction among nanoscale fibers due to van der Waals forces makes this task difficult. This study focuses on some of the problems that prevent a uniform distribution of CNFs–CNTs in cement paste and the methods used in the past to enhance dispersion. The first phase of the experimental program investigates the effect of using superplasticizers accompanied by sonication on the dispersion of CNFs in water and paste. The second phase focuses on the problem of cement grain size and limitations that the use of fine grain cement causes. Finally, on the basis of results and past studies, suggestions are made for achieving enhanced dispersion of CNFs–CNTs in cement paste.
Monograph Title: Monograph Accession #: 01157601
Report/Paper Numbers: NANO10-0027
Language: English
Authors: Yazdanbakhsh, ArdavanGrasley, ZacharyTyson, BryanAl-Rub, Rashid K AbuPagination: pp 89-95
Publication Date: 2010
ISBN: 9780309142779
Media Type: Print
Features: Figures
(4)
; References
(28)
TRT Terms: Candidate Terms: Uncontrolled Terms: Subject Areas: Materials; I32: Concrete
Files: TRIS, TRB, ATRI
Created Date: May 27 2010 11:08AM
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