Abstract：Abstract: Uniaxial-compression split Hopkinson pressure bar (SHPB) experiments were performed for reactive powder concrete (RPC) samples. Both the untreated specimens and after exposure in high temperature (400℃、600℃ and 800℃) concretes were tested in order to investigate the influences of mixed steel fibers on dynamic mechanisms and energy absorption for RPC concrete after exposure in high temperature. The results shows, steel fibers improve the strength and toughness of RPC before and after exposure in high temperature. After exposure in high temperature, due to a higher plastic flow property of PRC, the improved toughness effect attenuate. The compression strength losing ratio for RPC is higher than toughness parameter. Energy absorption ratio and energy absorption ability for RPC are improved by mixing steel fiber. And scanning electron microscope (SEM) technology is used to investigate the micro-structure change of the RPC material and a connection analysis between micro-structure and mechanical properties after burnt is discussed.
王立闻;庞宝君;林 敏;张 凯;陈 勇;王少恒. 活性粉末混凝土高温后冲击力学性能研究[J]. , 2012, 31(16): 27-32.
WANG Lingwen;PANG Baojun;LIN Min;ZHANG Kai;CHEN Yong;WANG Shaoheng. Research on Impact Mechanical Properties of Reactive Powder Concrete after Exposure in High Temperature. , 2012, 31(16): 27-32.
2012, Vol. 31 
