%0 Journal Article
%A WANG Xiao-zheng
%A PENG Gang
%A MA Xiao-liang
%A DENG Yuan
%T Dynamic Performance of Large Size Saturated Concrete Under Uniaxial Compression Test
%D 2017
%R 10.11988/ckyyb.20151017
%J Journal of Yangtze River Scientific Research Institute
%P 134-138
%V 34
%N 3
%X In order to study the dynamic properties of large size saturated concrete, we carried  out uniaxial compression tests under different strain rates. By using large-scale multi-function static and dynamic triaxial test machine, we prepared  cylindrical concrete specimens with diameter 300 mm and length 600 mm and obtained  dynamic mechanical properties of the concretes. Then, we analyzed the  failure mechanism according to failure shape. Test results show that peak stress and energy absorption capacity increased  with the increase of the loading rate, so did  peak strain and elastic modulus. On the basis of stress-strain relation, we established  a damage constitutive model of concrete. In the model, stress-strain relation conformed with  Weibull statistical distribution before peak stress; while after peak stress, the relation conformed with  Lognormal statistical distribution. Shear failure at a few conjugated inclined planes were observed . According to crack expansion after specimen failure, we explained the causes  of spalling failure of concrete and analyzed the  failure mechanism in aspects of material composition and  energy absorption ability.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20151017