건설재료시공학연구실

Building material & construction lab.

Abstract
In this study, it evaluate the impact resistance of Smooth Steel Fiber and Polyvinyl Alcohol Fiber Reinforced Cement Composite by projectile impact. smooth steel fiber and polyvinyl alcohol fiber were reinforced in cement composite respectively. Overall, the impact resistance of the specimens reinforced with 0.4vol.% PVA fiber was high, and the crater diameter was small in specimens using 13mm smooth steel fiber. When the steel fiber of 19mm was reinforced, the fracture depth is small due to the increase of macro crack resistance compared with other specimens. Meanwhile, in the case of the fracture area, it is considered that the reinforce of the fiber of 13 mm causes an increase in the stress dispersion effect to occur small.