A pressure-sensitive carbon black cement composite for traffic monitoring

A.O. Monteiro, A. Loredo, Pedro M. F. J. Da Costa, M. Oeser, P.B. Cachim

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Recent advances in nanotechnology have guided the development of a new generation of multifunctional construction materials. An example of this are cement-based composites, some of which can be used not just to pave roads but also to monitor them. A cement composite, integrating a carbon black (CB) filler, was used as a piezoresistive sensor to identify different cyclic compressive loadings, at temperatures ranging from 15°C to 45°C. The mechanical essays were performed under realistic conditions using 600cm3 specimens and uniaxial loads typical of automobile traffic. A linear and reversible pressure-sensing performance was found with gauge factors ranging from 40 to 60. Overall, these results show that CB/cement composites can act as stress-sensitive materials for traffic monitoring.
Original languageEnglish (US)
Pages (from-to)1079-1086
Number of pages8
JournalConstruction and Building Materials
Volume154
DOIs
StatePublished - Aug 17 2017

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