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7155396 
Journal Article 
Aging of 0-3 piezoelectric PZT ceramic-Portland cement composites 
Chaipanich, A; Rianyoi, R; Potong, R; Jaitanong, N; , 
2014 
1 
Ceramics International
ISSN: 0272-8842
EISSN: 1873-3956 
ELSEVIER SCI LTD 
OXFORD 
13579-13584 
WOS:000340321300122 
New piezoelectric cement composites have recently been developed in order to provide compatibility to the concrete structures where the composites can act as sensors for smart structure health monitoring applications. In this work, lead zirconate titanate (PZT) was mixed with normal Portland cement at 30-50% by volume to produce 0-3 connectivity composites and the effect of age up to 1 year on the piezoelectric coefficient (d(33)) of PZT cement composite after poling was investigated. The d(33) value of the 50% PZT composite measured at 24 h after poling is 26 pC/N and this value increased significantly during the first 10 days before reaching a value of approximate to 60 pC/N at 30 days and 90 days, with no significant difference at 1 year. The increase in the piezoelectric coefficient with age is believed to be due to both the reduction in the pores within the cement matrix due to hydration and moisture responsible for the transportation of ions. When compared the electromechanical coupling coefficient results between 1 month and 1 year, approximate to 1.5% difference was found between the two testing periods. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.