Acoustic, Dielectric and Piezoelectric Properties of 1–3 Connectivity Barium Titanate-Portland Cement Composites

Abstract

The 1–3 barium titanate (BT)-Portland cement (PC) Composites were fabricated using dice and fill method for smart materials applications in civil engineering structure. The acoustic, dielectric and piezoelectric properties of composites were studied. The results show that the acoustic impedance of the composites can be tailored to match that of the host structure, concrete. Moreover, the dielectric constant (ϵ _r) and piezoelectric coefficients (d ₃₃) of the composites increased with the increase of BT volume content. The d ₃₃values were found to be 63 pC/N and 128 pC/N for composites with BT volume content of 30% and 70%, respectively. Therefore, this new kind of lead-free piezoelectric ceramic-Portland cement composite has potential to be used for smart structure in the civil engineering field.

Keywords:

• Composites
• BaTiO₃ceramic
• Portland cement
• acoustic properties
• dielectric properties
• piezoelectric properties

Acknowledgments

Financial support from the Thailand Research Fund through the Royal Golden Jubilee Ph.D. Program (Grant No. PHD/0147/2551) to Miss Rattiyakorn Rianyoi and Asst. Prof. Dr. Arnon Chaipanich is gratefully acknowledged. The authors wish to thank the staff members at the Electroceramics Research Laboratory, Faculty of Science, Chiang Mai University, for use of the research facilities which made this work possible. The authors would also like to express their gratitude to the Thailand Research Fund (TRF), Office of the Higher Education Commission (Thailand) and INAMM/NSF (#0844081). Chiang Mai University and the Graduate School of Chiang Mai University is also acknowledged for additional financial support.