Multiscale fracture characteristics of cement based materials reinforced with carbon nanofibers

M. S. Konsta-Gdoutos*, Z. S. Metaxa, Surendra P Shah

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Advanced technological aspects increasingly demand higher-performing cement based ma-Terials with improved tensile strength, stiffness and toughness for use in infrastructure. The objective of this research is to improve all of these aspects using ladder scale reinforcement at the nano and micro scale. In this study, carbon nanotubes (CNTs) carbon nanofibers (CNFs)as well as PVA microfibers were used as reinforcement. The mechanical properties of the nanocomposites were investigated by fracture mechanics using notched three-point bend specimens. The distribution of the fibers and their reinforcing mechanisms were stu-died using an ultra high resolution scanning electron microscope (SEM. Mechanical charac-Terization studies reveal that the incorporation of nanofibers and microfibers greatly improve the flexural strength, Young's modulus and toughness of the cement matrix.

Original languageEnglish (US)
StatePublished - Dec 1 2010
Event18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale, ECF 2010 - Dresden, Germany
Duration: Aug 30 2010Sep 3 2010

Other

Other18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale, ECF 2010
CountryGermany
CityDresden
Period8/30/109/3/10

Keywords

  • Carbon nanofibers
  • Carbon nanotubes (CNTs) PVA microfibers
  • Hybrid nanocomposites
  • Mechanical properties
  • Nanofiber reinforcement
  • Scanning electron microscopy

ASJC Scopus subject areas

  • Mechanics of Materials

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