Based on literature reviews, it was found that the dynamic increase factor, which is defined as the ratio of the dynamic strength to the static strength, is clearly dependent on specimen size, types, and experimental methods. It is expected that the proposed dynamic increase factor is significantly useful for numerical analysis of concrete behavior subjected to blast or impact.

• 홍성원(서울대학교 공학연구소 선임연구원, 공학박사) | Hong, Seongwon
• 강현구(서울대학교 건축학과 교수, 공학박사) | Kang, Thomas H.-K. 교신저자