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Production and evaluation of Self-Sensing Cement Composites (SSCC's) based on the principle of piezoresistivity, produced with residue from brake linings from heavy vehicles, concomitantly with fibers and carbon nanotubes

Grant number: 23/05479-4
Support Opportunities:Regular Research Grants
Duration: December 01, 2023 - November 30, 2025
Field of knowledge:Engineering - Civil Engineering - Construction Industry
Principal Investigator:Luísa Andréia Gachet
Grantee:Luísa Andréia Gachet
Host Institution: Faculdade de Tecnologia (FT). Universidade Estadual de Campinas (UNICAMP). Limeira , SP, Brazil
Associated researchers: Pedro Serna ; Rosa Cristina Cecche Lintz

Abstract

Self-sensing Cement Composites (SSCC's) seek to promote the monitoring of structures without the need to install sensors. Many of these SSCC's are based on the piezoresistive effect, which require electrically conductive materials to be used in their production. It turns out that these materials in many cases compromise the mechanical properties of the material, or have a high cost. In this sense, this project intends to develop a self-sensitive cementitious composite by incorporating graphite, brake lining waste,carbon fiber and carbon nanotube, of an original character, as well as to analyze its physical-mechanical properties and its piezoresistive effect. It is intended to characterize and analyze the constituent materials and the self-sensitive cementitious composite, in the fresh and hardened states. As well as analyzing the electrical conductivity and self-sensitivity of the different traces, to obtain the ideal content for the best piezoresistive response of the SSCC and mechanical properties. The concomitant use of brake lining residue with carbon fibers and nanotubes in the production of SSCC's, in addition to being innovative, can represent cost reduction, better physical-mechanical performance and an environmentally friendly solution, enabling in this sense, the use of SSCC's on a larger scale in civil construction. (AU)

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