EngineeringCivil EngineeringMaterials EngineeringMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsConcrete MaterialsImpact BehaviorImpact MechanicsImpact ResistanceStrain Rate EffectsStrength Of MaterialsCompressive StrengthMaterial Strain Rate EffectsRecycled Aggregate ConcreteRecycled AggregatesSplit Hopkinson Pressure Bar TestingStrain EffectsStrain-rate DependenceStrain-rate Sensitivity
This paper presents the experimental results of recycled aggregate concrete (RAC) specimens prepared with five different amounts of recycled coarse aggregate (RCA) (i.e., 0, 25%, 50%, 75%, and 100%) subjected to impact loading based on split Hopkinson pressure bar tests. Strain-rate effects on dynamic compressive strength and critical strain of RAC were studied. Results show that the impact properties of RAC exhibit strong strain-rate dependency and increase approximately linearly with strain-rate. The transition point from low strain-rate sensitivity to high sensitivity decreases with the increase of matrix strength.
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