건설재료시공학연구실

Building material & construction lab.

Abstract
In this study, the tensile properties of hybrid fiber reinforced cementitious composites under the high strain rate was
evaluated. Experimental results, the HSF1.5PVA0.5 shown the highest tensile strength because the PVA fiber suppressed the micro cracks in the matrix around the hooked steel fiber and improved the pull-out resistance of
hooked steel fiber. Thus, DIF of strain capacity and fracture toughness of HSF1.5PVA were greatly improved. Also,
the fracture toughness was greatly improved because the tensile stress was slowly decreased after the peak stress
by improvement of the pull-out resistance performance of hooked steel fiber at strain rate 101/s.