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《Chinese Journal of Underground Space and Engineering》 2017-03
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Uniaxial Impact Compression Experiment and Failure Modes Analysis of EPS Concrete

Ma Qinyong;Ran Xuemei;Yuan Pu;Engineering Research Center of Underground Mine Engineering,Ministry of Education,Anhui University of Science and Technology;  
In order to study the effect of EPS volume content on the uniaxial dynamic mechanical properties and the damage of concrete,uniaxial impact compression tests were carried out for 4 kinds of concrete with different EPS particles volume contents by split Hopkinson pressure bar apparatus with diameter of 74 mm.The influence of strain rate and EPS particles volume content on uniaxial dynamic compressive strength and damage of concrete were analyzed.Test results show that uniaxial dynamic compressive strength of EPS concrete increases with the increase of strain rate,and decreases with the increase of EPS volume content.When EPS particles volume content is between 20% and 30%,uniaxial dynamic compressive strength of EPS concrete decreases in a small amplitude.Failure mode of EPS concrete specimen becomes more serious with the increase of strain rate,and more moderate with the increase of EPS particle volume content.When volume content of EPS particles reaches 30%,EPS concrete specimen is cracked but not broken.
【Key Words】: EPS concrete uniaxial dynamic compressive strength strain rate failure mode
【CateGory Index】: TU528
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