Study on the Temperature-Sensitive Properties of Carbon Fiber-Reinforced Mortar

Abstract:

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Carbon fiber (~5mm long)-reinforced mortar is found to be an effective thermal sensor. In this paper, relations between temperature change and resistivity of carbon fiber- reinforced mortar (CFRM for short) with different carbon fiber contents (0.4%~1.2% by mass of cement) are studied. The results show that during the initial period, the resistivity decreases when the temperature increases (Negative Temperature Coefficient effect). After the temperature reaches a certain value, the resistivity increases when the temperature increases (Positive Temperature Coefficient effect). Besides, with the change of carbon fiber content, the transit temperature of NTC/ PTC effect also changes. Based on the experimental results, the CFRM shows a potential use as a thermal sensor. The mechanisms of temperature- sensitive properties and NTC/ PTC transition are also discussed.

Info:

Periodical:

Materials Science Forum (Volumes 675-677)

Edited by:

Yi Tan and Dongying Ju

Pages:

1167-1170

DOI:

10.4028/www.scientific.net/MSF.675-677.1167

Citation:

X. Y. Liu et al., "Study on the Temperature-Sensitive Properties of Carbon Fiber-Reinforced Mortar", Materials Science Forum, Vols. 675-677, pp. 1167-1170, 2011

Online since:

February 2011

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Price:

$35.00

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