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The Scientific World Journal
Volume 2014 (2014), Article ID 289213, 7 pages
http://dx.doi.org/10.1155/2014/289213
Research Article

Effect of Different Cooling Regimes on the Mechanical Properties of Cementitious Composites Subjected to High Temperatures

College of Civil Engineering, Tongji University, Shanghai 200092, China

Received 19 January 2014; Accepted 27 March 2014; Published 9 April 2014

Academic Editors: J. Kinuthia and U. C. Melo

Copyright © 2014 Jiangtao Yu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The influence of different cooling regimes (quenching in water and cooling in air) on the residual mechanical properties of engineered cementitious composite (ECC) subjected to high temperature up to 800°C was discussed in this paper. The ECC specimens are exposed to 100, 200, 400, 600, and 800°C with the unheated specimens for reference. Different cooling regimens had a significant influence on the mechanical properties of postfire ECC specimens. The microstructural characterization was examined before and after exposure to fire deterioration by using scanning electron microscopy (SEM). Results from the microtest well explained the mechanical properties variation of postfire specimens.