Carbon black enhanced cementitious composites for self-sensing micro strain

Zhoufeng Shi, Ye Lu

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

Abstract

As one of the non-destructive test methods, self-sensing cementitious composites have been developed for concrete structures to monitor the health condition. In this study, the focus was put on the self-sensing capacity for low amplitude strain which was often overlooked in the previous research. Carbon black nanoparticles were added as conductive filler in cementitious composites and their piezo-resistivities were recorded in low-amplitude cyclic loadings. Besides, hammer induced stress wave was utilized to activate the self-sensing mechanism in composites. Because the tunnelling effect occurs at several nanometres and is extremely sensitive to the micro strains, these signals were collected as the electrical resistance variance between two closely contacted electrodes and compared with the signals from lead zirconate titanate (PZT) sensors. The developed materials provides the potential of high-resolution strain measurement and stress wave detection without any external instruments.

Original languageEnglish
Title of host publicationStructural Health Monitoring- The 9th Asia-Pacific Workshop on Structural Health Monitoring, 9APWSHM 2022
EditorsNik Rajic, Wing Kong Chiu, Martin Veidt, Akira Mita, N. Takeda
PublisherAssociation of American Publishers
Pages279-284
Number of pages6
ISBN (Print)9781644902448
DOIs
Publication statusPublished - 2023
EventAsia-Pacific Workshop on Structural Health Monitoring 2022 - Cairns, Australia
Duration: 7 Dec 20229 Dec 2022
Conference number: 9th
https://www.mrforum.com/product-category/open-access-articles/9apwshm/ (Proceedings)

Publication series

NameMaterials Research Proceedings
Volume27
ISSN (Print)2474-3941
ISSN (Electronic)2474-395X

Conference

ConferenceAsia-Pacific Workshop on Structural Health Monitoring 2022
Abbreviated title9APWSHM 2022
Country/TerritoryAustralia
CityCairns
Period7/12/229/12/22
Internet address

Keywords

  • Carbon Black Nanoparticles
  • Micro Strain
  • Self-Sensing
  • Tunneling Effect

Cite this