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Pro084-1

STUDY ON CONDUCTIVITY AND STRESS -SENSITIVE PROPERTY OF CARBON NANOTUBE REINFORCED CEMENT COMPOSITES



Author(s): Xiaoyan Liu, Yue Xu, Xinrui Wang, S. P. Shah
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 348-354
Total Pages: 961
Language : English


Abstract: In this study, ultrasound technology was used to prepare multi-wall carbon nanotube MWCNT) solution. Cement-based composites were fabricated with Portland cement and various contents of MWCNTs ranging from 0 to 0.3 wt.%. Experimental results showed that the addition of MWCNTs significantly enhanced the conductivity properties of the composites. The electrical resistivity changed with different MWCNTs content. And the higher CNT content always resulted in the lower resistivity. When the MWCNTs content was between 0.05 wt.% to 0.1 wt.%, the changes of electrical resistivity were apparent. Stress-sensitive properties under cyclic compressive load were also studied and analyzed. Results showed that the MWCNTs reinforced cement composites had good stress-sensitive properties. When applied the same stress (12.5MPa), the maximum rate of resistivity change of the 0.1 wt.% content cement-based composite specimen could be up to 51.6%.


Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00


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