Influence of PZT insertion on Portland cement curing process and piezoelectric properties of 0-3 cement-based composites by impedance spectroscopy

Autor(es)

Santos, J. A. ^[1] ; Sanches, A. O. ^[1] ; Akasaki, J. L. ^[1] ; Tashima, M. M. ^[1] ; Longo, E. ^[2] ; Malmonge, J. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fac Engn, UNESP, Campus Ilha Solteira Av Brasil 56, BR-15385000 Ilha Solteira, SP - Brazil

^[2] Univ Fed Sao Carlos UFSCar, LIEC, Rodovia Washington Luis S-N, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CONSTRUCTION AND BUILDING MATERIALS; v. 238, MAR 30 2020.
• Citações Web of Science: 0

Resumo

0-3 Cement-based piezoelectric composites were produced. It was verified that not only the piezoelectric properties of the composites, but also the influence of piezoelectric phase in the cement paste curing process. The results showed that the final piezoelectric and dielectric properties of the composites depend mainly on the interfacial microstructure between the matrix and the piezoelectric insertion. DC conductivity and impedance spectroscopy measurements showed a high sensitivity to the identification of retard hydration process or phase transformations. Piezoelectric properties show ageing fluctuations, attributed to the cement curing process which promoted unstable dipoles at the same time that it promoted piezoelectric phase constriction. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs