Study on Toughening Effect in EPS Concrete
To study on the toughing effect of EPS in the plain concrete, the EPS concrete with 10％,20％,30％,40％,50％ EPS volume fraction were prepared. Taking specific energy absorption as the index, the toughing effect of EPS concrete with different EPS volume fraction under impact loading were studied using a 100-mmdiameter split Hopkinson pressure bar(SHPB) apparatus, and the toughing effect mechanism of the concrete was discussed. The results show that the toughing effect of the EPS concrete increases with the average strain rate for the strain rate effect, which takes on obvious strain rate dependency. For the EPS microscopic structure effect, the toughing effect of the EPS concrete increases with the EPS volume fraction in 10~30％. Its toughing effect reduces somewhat when the EPS volume fraction reaches 40-50％. To improve the deformation property, the optimum volume fraction of EPS is 20％.
EPS concrete split Hopkinson pressure bar apparatus Specific energy absorption strain rate toughening effect
Dehui Zhao Jinyu Xu Eriei Bai
Engineering Institute, Air Force Engineering University, Xian, 710038, China Engineering Institute, Air Force Engineering University, Xian, 710038, China College of Mechanics a
国际会议
上海
英文
1717-1722
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）