Effect of carbon nanotubes on properties of cement-sand-based piezoelectric composites

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

Abstract

carbon nanotubes (cnts) were dispersed in a cement-sand-based piezoelectric smart composite as conductive fillers to improve its poling efficiency, leading to a desirable piezoelectric effect. By introducing a small amount of CNTs, continuous electric networks between Lead Zirconate Titanate (PZT) particles were created, thus making the composite poling easier. Specimens were prepared by mixing PZT powders, Portland cement and sand with CNTs, followed by pressing it with a load frame system. The effect of quantity of CNTs ranging from 0 to 1.0 volume percent on properties of the composite, including its piezoelectric coefficient, dielectric constant and loss, and sensing effects, were characterized. It was found that the addition of CNTs facilitated effective poling at room temperature and improved the piezoelectric and dielectric properties of the composite. The composite modified by CNTs achieved optimal properties when the CNTs content was 0.7 vol.%.

Original languageEnglish (US)
Title of host publicationBehavior and Mechanics of Multifunctional Materials and Composites 2015
EditorsNakhiah C. Goulbourne
PublisherSPIE
ISBN (Electronic)9781628415353
DOIs
StatePublished - Jan 1 2015
EventBehavior and Mechanics of Multifunctional Materials and Composites 2015 - San Diego, United States
Duration: Mar 9 2015Mar 11 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9432
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherBehavior and Mechanics of Multifunctional Materials and Composites 2015
CountryUnited States
CitySan Diego
Period3/9/153/11/15

Keywords

  • Carbon Nanotubes
  • Cement
  • Lead Zirconate Titanate
  • Piezoelectric Smart Composite

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