Dynamic Compressive Behavior of Concrete with Different Polyvinyl Alcohol Fiber Content

Abstract

The compressive behavior of concrete with different polyvinyl alcohol (PVA) contents and strain rates was studied by using Split Hopkinson Pressure Bar. The result showed that the compressive strength of fiber concrete, peak strain, ultimate strain and specific energy absorption increased with the enhanced strain rate and the raise of fiber content. The simplified constitutive model of fiber-reinforced concrete is proposed, based on the viscoelastic damage theory, which can simulate the relationship effectively between the compressive stress and strain of fiber concrete under impact loading.