Behavior of High-Strength and Ultrahigh-Performance Concrete Targets Subjected to Relatively Rigid Projectile Impact

Sanghee Kim,Hyeon-Jong Hwang,Thomas H.-K Kang

doi:10.1061/(asce)st.1943-541x.0003129

Sanghee Kim, Hyeon-Jong Hwang + Show 1 more

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https://doi.org/10.1061/(asce)st.1943-541x.0003129

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Abstract

AbstractThis experimental study was conducted to evaluate the impact behavior of relatively rigid projectiles with conical and hemispherical nose shapes on normal to high-strength and ultrahigh per...

Highlights

RC structures play a primary role in protecting lives and property against external hazards, such as blasts, impacts, and attacks (Carrasquillo et al 1981; Ibrahim Ary and Kang 2012; Kang and Ibrahim Ary 2012)
For the high-velocity impact tests, conical and hemispherical projectiles were collided with concrete target specimens having concrete strengths of 41, 81, 96, 103, and 162 MPa
The curing temperature is an important factor in the development of high-strength concrete, which should be carefully controlled at construction sites where steam curing is not available and air-dry and sealed curing is utilized

Summary

Introduction

RC structures play a primary role in protecting lives and property against external hazards, such as blasts, impacts, and attacks (Carrasquillo et al 1981; Ibrahim Ary and Kang 2012; Kang and Ibrahim Ary 2012). Since 2006, public buildings and infrastructures have been damaged by more than 200,000 terrorist activities (GTD 2018). These blasts and impacts can be catastrophic. Major buildings and infrastructures likely deemed to be targets should consider protection performance. High-strength concrete and ultrahigh performance concrete (UHPC) offer many advantages in the field of RC structure protection and fortification. When the same protection performance is necessary, high-strength concrete and UHPC are advantageous in that they reduce the crosssection of the RC member compared to the same functionality in normal strength concrete (Kang et al 2019). Impact performance and applications of high-strength concrete and UHPC have been the subject of research (Ngo et al 2013; Riedel et al 2010)

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