Distribution of Carbon Nanofibers and Nanotubes in Cementitious Composites Academic Article uri icon

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 CNFsCNTs 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 CNFsCNTs 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 CNFsCNTs in cement paste.

published proceedings

  • Transportation Research Record: Journal of the Transportation Research Board

altmetric score

  • 3

author list (cited authors)

  • Yazdanbakhsh, A., Grasley, Z., Tyson, B., & Al-Rub, R.

citation count

  • 116

complete list of authors

  • Yazdanbakhsh, Ardavan||Grasley, Zachary||Tyson, Bryan||Al-Rub, Rashid K Abu

publication date

  • January 2010