Study on Mechanical Properties of Barite Concrete under Impact Load

3rd International Conference on Energy Equipment Science and Engineering

Chen, Z.F.^1 ; Cheng, K.^2 ; Wu, D.^1 ; Gan, Y.C.^1 ; Tao, Q.W.^1

Key Laboratory of Treatment of Disasters in Engineering, University of South, China^1

School of Civil Engineering, University of South, China^2

关键词: Concrete compression;    Drop test machine;    Dynamic increase factor;    Failure process;    Impact force;    Impact process;    Loading rate;    Strain rate effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012022/pdf
DOI  :  10.1088/1755-1315/128/1/012022

来源: IOP

【 摘 要 】

In order to research the mechanical properties of Barite concrete under impact load, a group of concrete compression tests was carried out under the impact load by using the drop test machine. A high-speed camera was used to record the failure process of the specimen during the impact process. The test results show that:with the increase of drop height, the loading rate, the peak load, the strain under peak load, the strain rate and the dynamic increase factor (DIF) all increase gradually. The ultimate tensile strain is close to each other, and the time of impact force decreases significantly, showing significant strain rate effect.