Characterization of Fracture Behavior of Multi-Walled Carbon Nanotube Reinforced Cement Paste Using Digital Image Correlation

Nima Zohhadi, Behrad Koohbor, Fabio Matta, Addis Kidane

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

4 Scopus citations

Abstract

This paper reports on the fracture behavior of MWCNT-reinforced cement paste based on evidence from three-point bending tests of single-edge notched beam samples. Digital image correlation (DIC) was used to measure full-field displacements at different stages of fracture in reinforced and unreinforced samples. Strain maps extracted from displacement data were used to characterize the morphology of the fracture process zone (FPZ). The DIC principal tensile strain maps from nanoreinforced samples consistently highlighted the development of a larger FPZ prior to failure. Evidence from scanning electron microscopy analysis of fracture surfaces further supports the hypothesis that highly-dispersed and well-bonded MWCNTs contribute to toughness through crack-bridging.

Original languageEnglish (US)
Title of host publicationFracture, Fatigue, Failure, and Damage Evolution - Proceedings of the 2014 Annual Conference on Experimental and Applied Mechanics
PublisherSpringer New York LLC
Pages73-79
Number of pages7
EditionVOLUME 5
ISBN (Print)9783319069760
DOIs
StatePublished - 2015
Externally publishedYes
Event2014 SEM Annual Conference and Exposition on Experimental and Applied Mechanics - Greenville, SC, United States
Duration: Jun 2 2014Jun 5 2014

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
NumberVOLUME 5
Volume66
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference2014 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
Country/TerritoryUnited States
CityGreenville, SC
Period6/2/146/5/14

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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