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

被引：57
|
作者：
Yu, Jiangtao [1 ]
Weng, Wenfang [1 ]
Yu, Kequan [1 ]
机构：
[1] Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China
来源：
SCIENTIFIC WORLD JOURNAL | 2014年
关键词：
CONCRETE; STRENGTH; MICROSTRUCTURE; PERFORMANCE; STRAIN; FIBER;
D O I：
10.1155/2014/289213
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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 degrees C was discussed in this paper. The ECC specimens are exposed to 100, 200, 400, 600, and 800 degrees 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.
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页数：7
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