Self-Sensing Properties of Green Alkali-Activated Binders with Carbon-Based Nanoinclusions

Antonella D’Alessandro, Denny Coffetti, Elena Crotti, Luigi Coppola, Andrea Meoni and Filippo Ubertini
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Antonella D’Alessandro: Department of Civil and Environmental Engineering, University of Perugia, 06123 Perugia, Italy
Denny Coffetti: Department of Engineering and Applied Sciences, University of Bergamo, 24129 Bergamo, Italy
Elena Crotti: Department of Engineering and Applied Sciences, University of Bergamo, 24129 Bergamo, Italy
Luigi Coppola: Department of Engineering and Applied Sciences, University of Bergamo, 24129 Bergamo, Italy
Andrea Meoni: Department of Civil and Environmental Engineering, University of Perugia, 06123 Perugia, Italy
Filippo Ubertini: Department of Civil and Environmental Engineering, University of Perugia, 06123 Perugia, Italy

Sustainability, 2020, vol. 12, issue 23, 1-13

Abstract: This paper is aimed at investigating the self-sensing properties of Portland-free alkali-activated binders doped with carbon-based nanofillers. Four different inclusions (carbon nanotubes, carbon nanofibers, carbon black and graphene nanoplatelets) were added into the matrix in the same amount. The physical and electromechanical properties were analyzed. The self-sensing capabilities of the samples were tested by applying a square wave voltage signal and measuring the variation of electrical resistance during cyclical compression tests. The results showed that the presence of nano-inclusions enhanced the sensing behavior of the materials, especially regarding the linearity and the hysteresis performances. Such results appear promising for the application of such novel and innovative nano-modified composites in the field of monitoring structures and infrastructures.

Keywords: alkali-activated materials; nanofillers; carbon inclusions; self-monitoring; conductive materials (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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