Mechanical properties and nanostructure of cement-based materials reinforced with carbon nanofibers and Polyvinyl Alcohol (PVA) microfibers

Zoi S. Metaxa, Maria S. Konsta-Gdoutos, Surendra P Shah

Research output: Chapter in Book/Report/Conference proceedingConference contribution

46 Scopus citations

Abstract

There have been numerous studies that have aimed at improving the low tensile strength, stiffness, and toughness of cementitious materials. This study aims to show that all of these characteristics can be greatly improved by the addition of ladder scale reinforcement at the nano and micro scale. Carbon nanofibers (CNFs) as well as polyvinyl alcohol (PVA) microfibers were used as reinforcement. The mechanical properties of the nanocomposites were investigated by fracture mechanics three-point bending test. The microstructure and the morphology of nanocomposite samples were studied using an ultra high resolution scanning electron microscope (SEM). The results clearly illustrate that the incorporation of nanofibers and microfibers greatly improves the flexural strength, Young's modulus, and toughness of the cement matrix.

Original languageEnglish (US)
Title of host publicationAdvances in the Material Science of Concrete - Session at the ACI Spring 2010 Convention
Pages115-126
Number of pages12
Edition270 SP
StatePublished - Dec 1 2010
EventACI Spring 2010 Convention - Chicago, IL, United States
Duration: Mar 21 2010Mar 25 2010

Publication series

NameAmerican Concrete Institute, ACI Special Publication
Number270 SP
ISSN (Print)0193-2527

Other

OtherACI Spring 2010 Convention
Country/TerritoryUnited States
CityChicago, IL
Period3/21/103/25/10

Keywords

  • Carbon nanofibers
  • Hybrid composites
  • Mechanical properties
  • Nanofiber reinforcement
  • Polyvinyl alcohol microfibers
  • Scanning electron microscopy

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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