27 March 2015 Nondestructive evaluation of the mechanical behavior of cement-based nanocomposites under bending
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The present paper describes the acoustic emission (AE) behavior and the mechanical properties of Portlant cement-based mortars due to the addition of multi wall carbon nanotubes (MWCNTs). This research aims in investigating the crack growth behavior of modified cement mortar with MWCNTs that act as nanoreinforcement during an unaxial compression test using acoustic emission technique. MWCNTs were used in various concentrations inside the matrix. Density, sound's speed, modulus, bending strength, compression strength were studied for five different concentrations. The adding and the increase of MWCNTs concentrations upper to 0.2 % by weight of cement not improving the mechanical properties of cement-based mortar but increase the acoustic emission activity.
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I. K. Tragazikis, I. K. Tragazikis, P. T. Dalla, P. T. Dalla, D. A. Exarchos, D. A. Exarchos, K. Dassios, K. Dassios, T. E. Matikas, T. E. Matikas, "Nondestructive evaluation of the mechanical behavior of cement-based nanocomposites under bending", Proc. SPIE 9436, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2015, 94360F (27 March 2015); doi: 10.1117/12.2085508; https://doi.org/10.1117/12.2085508

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