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Investigators at Chung Ang University Detail Findings in Materials Science (Piezoresistive properties of CNT reinforced cementitious composites)

July 15, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Materials Science have been presented. According to news reporting originating in Seoul, South Korea, by VerticalNews journalists, research stated, "This paper characterised the piezoresistive properties of carbon nanotube (CNT) reinforced cementitious composites. Such factors as curing conditions, carboxyl functionalisation, water/cement ratio and oven drying were considered in the experiment and their effects on the piezoresistive sensitivity were experimentally investigated."

The news reporters obtained a quote from the research from Chung Ang University, "Experimental results indicate that the electronic resistance of the CNT reinforced composites cured in a dry environment is negatively correlated with compressive loads. Furthermore, the functionalisation of CNT with carboxyl has beneficial effects on the piezoresistive response of the composites. However, neither moist cured composites nor the composites with a water/cement ratio of 0.5 show the piezoresistive behaviour, while the oven dried composites exhibit the highest piezoresistive sensitivity. This study indicates that the moisture content in the composite is the most important factor in developing the piezoresistive properties of CNT reinforced composites. With decreasing moisture content in the composites, the piezoresistive sensitivity is enhanced."

According to the news reporters, the research concluded: "It is expected that the piezoresistive properties of CNT reinforced composites can be efficiently used in developing a new type of sensor for the structural health monitoring of concrete structures."

For more information on this research see: Piezoresistive properties of CNT reinforced cementitious composites. Materials Research Innovations, 2014;18():716-721. Materials Research Innovations can be contacted at: Maney Publishing, Ste 1C, Josephs Well, Hanover Walk, Leeds LS3 1AB, W Yorks, England. (Springer -; Materials Research Innovations -

Our news correspondents report that additional information may be obtained by contacting S.W. Cha, Chung Ang University, Dept. of Civil & Environm Engn, Seoul 156756, South Korea. Additional authors for this research include C. Song, Y.H. Cho and S. Choi.

Keywords for this news article include: Asia, Seoul, South Korea, Materials Science

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Source: Journal of Technology

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