Experimental study on compressive behavior of PE-ECC under impact load

Frontiers in Materials

Materials

Jie Xiao¹  Lingfei Liu²  Zijian Wu² 

[1] School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, China;School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan, China;

关键词: impact load;    PE-ECC;    SHPB;    dynamic stress-strain curve;    dynamic toughness;   

DOI  :  10.3389/fmats.2023.1204083

 received in 2023-04-11, accepted in 2023-05-03,  发布年份 2023

来源: Frontiers

【 摘 要 】

Compared with polyvinyl alcohol-engineered cementitious composites (PVA-ECC), engineered cementitious composites containing polyethylene fibers (PE-ECC) has captured the attention of researchers because of lower cost. Nevertheless, there is a limited amount of research that focuses on their dynamic behavior. Thus, specimens with different water binder ratios were tested by split Hopkinson pressure bar (SHPB) to unveil the dynamic compressive behavior of PE-ECC. The dynamic behaviors were analyzed based on the tests, including dynamic failure modes, dynamic stress-strain curves, dynamic compressive strength, dynamic peak strain, and dynamic toughness. The result shows the PE-ECC has excellent compressive ductility, and a long post-peak descending part in the stress-strain relations. Furthermore, the sensitivity analysis reveals that the strain rate is the most crucial factor that directly affects the dynamic compressive strength, dynamic peak strain, and dynamic toughness in a monotonic fashion.

【 授权许可】

Unknown   
Copyright © 2023 Liu, Xiao and Wu.