Development of a multifunctional concrete with carbon sensor

Author(s): Paulo Cachim, Emanuel Pereira
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 580-586
Total Pages: 848
Language: English

Abstract: Global demand for increasing of behavior of civil engineering structures and infrastructures, combined with the developments on monitoring systems, has lead, in recent years, to the so- called smart infrastructures. Among these, traffic management has received special attention with the development of the Intelligent Transport Systems. Advances in material technology that occurred in last years conducted to the development of smart multifunctioning construction materials that can, autonomously, perform a variety of tasks. With suitable compositions, cement composites can be used, due to their specific conductive properties changes, in monitoring systems because of their intrinsic properties of sensitivity to mechanical stimulus, based in the piezoresistivity principle. This research aims to develop a multifunctional cimentitious concrete materials capable of structural monitoring. This is achieved by using a piezoresistive cement composite with carbon black for application on road pavements that aims to assess traffic data in real time. Compressive static and dynamic tests have shown that, through electrical resistivity monitoring of the samples, high sensitive factors were observed with a linear response. These responses are not affected by temperature changes. As a conclusion, this study states that incorporation of sensitive concrete near the pavement surface can be a feasible alternative for traditional traffic monitoring solutions. The main advantages of this solution are its low cost, simplicity, structural properties and sensitivity.

Online publication :2019
Publication type : full_text
Public price (Euros) : 00