Electrical characteristics and pressure-sensitive response measurements of carboxyl MWNT/cement composites

Autor:	Jinping Ou, Baoguo Han, Kun Zhang, Xun Yu, Eil Kwon
Rok vydání:	2012
Předmět:	Measurement method Materials science Building and Construction Cement composites Carbon nanotube Capacitance law.invention Compressive load Capacitor law Pressure sensitive General Materials Science Composite material Cement based composites
Zdroj:	Cement and Concrete Composites. 34:794-800
ISSN:	0958-9465
DOI:	10.1016/j.cemconcomp.2012.02.012
Popis:	In this study, electrical characteristics of pressure-sensitive carboxyl multi-walled carbon nanotube (MWNT)/cement composites with and without compressive loading were investigated. Experimental results indicate that the carboxyl MWNT/cement composites have both resistance and capacitance characteristics. Capacitance is insensitive to compressive loading, but the charging of the capacitor causes a linear increase in the measured resistance during DC measurement. The reversible pressure-sensitive responses of resistance to compressive loading can be extracted by removing the linear increase component. An AC measurement method can also be used to eliminate the effect of capacitor charging and discharging on the pressure-sensitive responses of carboxyl MWNT/cement composites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::327a4501545a94114d0e53b49f2f0f95 https://doi.org/10.1016/j.cemconcomp.2012.02.012 Zobrazit plný text záznamu Full Text from ScienceDirect