Influence of Curing Age on Microstructure in Barium Titanate – Portland Cement Composites

Abstract:

The objective of this study was to find out the influence of curing age on microstructure in barium titanate – Portland cement composites. Barium titanate, BaTiO3 (BT) particles was mixed with Portland Cement (PC) and BT content of 50% by volume to produce the composites. All composites were cured in chamber of 60oC and 98% relative humidity for 1, 2, 3, and 7 days. Thereafter, scanning electron microscope (SEM) was used to examine the interfacial zone between cement and BT ceramics. SEM observation indicated that the BT-PC composite cured for 7 days clearly showed calcium silicate hydrate gel (an essential hydration product of Portland cement) surrounding the BT particles and has lower porosity. In BT-PC composite cured for 1 day, the gel can be seen but of less quantity and has higher porosity which clearly affected the interfacial zone.

• Periodical: Key Engineering Materials (Volume 484)
• Pages: 222-225
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.484.222
• Online since: July 2011
• Authors: Rattiyakorn Rianyoi, R. Potong, Nittaya Jaitanong, Arnon Chaipanich
• Keywords: Barium Titanate (BT), Cement, Composite, Curing Age, Microstructure

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