Evaluation of Impact Resistance of Steel Fiber-Reinforced Concrete Panels Using Design Equations

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Title: Evaluation of Impact Resistance of Steel Fiber-Reinforced Concrete Panels Using Design Equations

Author(s): Sanghee Kim, Thomas H.-K. Kang, and Hyun Do Yun

Publication: Structural Journal

Volume: 114

Issue: 04

Appears on pages(s): 911-921

Keywords: aggregates; design equations; impact resistance; steel fiberreinforced concrete (SFRC)

Date: 7/1/2017

Abstract:
Steel fiber-reinforced concrete (SFRC) has become increasingly important as a construction material for resisting impact load. However, the experimental and analytical data of impact resistance of SFRC are not sufficiently accumulated. To bridge this gap, in this study, SFRC panel specimens with panel thickness to projectile diameter ratios of 3.5 or smaller were tested to evaluate the impact resistance of SFRC. Test variables included the steel fiber volume fraction, panel thickness, size of coarse aggregates, and impact velocity. The test results were used to evaluate various impact design equations for plain concrete, and, also using the design equations, the test results were evaluated in depth. Steelfiber volume fraction, panel thickness, size of coarse aggregates, and impact velocity all affected the impact resistance and performance, but to different extents. The study also assessed applicability of the existing impact design equations for plain concrete to the evaluation of SFRC.