Piezoresistivity of Cement Matrix Composites Incorporating Multiwalled Carbon Nanotubes due to Moisture Variation
Joint Authors
Wang, Yanfeng
Zhao, Xiaohua
Zhao, Yi
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-28
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Cementitious composites usually work under moisture condition.
Presently, the piezoresistivity of cementitious composites incorporating multiwalled carbon nanotubes (MWCNTs) due to moisture variation was experimentally investigated.
The variation of moisture content was controlled by drying specimens in an oven.
In most cases of moisture content, the composites were observed to present positive piezoresistivity during the process of cyclic compression.
While moisture content was in a specific range, the composites exhibited negative piezoresistivity.
The whole transition from positive piezoresistivity to negative piezoresistivity and then positive piezoresistivity was obtained with moisture variation.
Moreover, the amplitude of piezoresistivity changed in the process.
These phenomena may be explained through the combination of ionic conduction and electronic conduction.
A theoretical model of piezoresistivity, able to predict the effects of porosity, the volume fraction of MWCNTs, and the connectivity parameters, is proposed.
Numerical results with the model show that the calculated piezoresistive responses of specimens agree reasonably well with testing data.
American Psychological Association (APA)
Wang, Yanfeng& Zhao, Xiaohua& Zhao, Yi. 2020. Piezoresistivity of Cement Matrix Composites Incorporating Multiwalled Carbon Nanotubes due to Moisture Variation. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121913
Modern Language Association (MLA)
Wang, Yanfeng…[et al.]. Piezoresistivity of Cement Matrix Composites Incorporating Multiwalled Carbon Nanotubes due to Moisture Variation. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1121913
American Medical Association (AMA)
Wang, Yanfeng& Zhao, Xiaohua& Zhao, Yi. Piezoresistivity of Cement Matrix Composites Incorporating Multiwalled Carbon Nanotubes due to Moisture Variation. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121913
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121913