Experimental and numerical research on the effect of ogive-nose projectile penetrating UR50 ultra-early-strength concrete. (February 2023)

• Record Type: Journal Article
• Authors: Wang, Wei; Song, Xiaodong; Yang, Jianchao; Liu, Fei; Gao, Weiliang
• Is Part Of: Cement & concrete composites. Volume 136(2023)
• Publication Date: 2023-02
• Subjects: UR50 ultra-early-strength concrete -- Depth of penetration (DOP) -- Numerical simulation -- Berezan formulation; Composite-reinforced concrete -- Periodicals; Concrete -- Periodicals; Composite materials -- Periodicals; Composites de ciment -- Périodiques; Béton -- Périodiques; Composites -- Périodiques; Béton léger -- Périodiques; Cement composites; Composite materials; Composite-reinforced concrete; Concrete; Lightweight concrete; Periodicals; Electronic journals; 620.135
• DOI: 10.1016/j.cemconcomp.2022.104902
• Languages: English
• ISSNs: 0958-9465

Abstract

Abstract: UR50 ultra-early-strength concrete, known for its short curing time and rapid development of mechanical properties, which is an ideal material for emergency repairs and reinforcement of wartime protective structures. To study the anti-penetration performance of ultra-early-strength concrete at different curing ages, high-velocity penetration experiments are carried out on UR50 ultra-early-strength concrete targets cured for 1 day, 7 days and 28 days by using 35 mm smooth bore cannon and 35CrMnSiA reduced-ratio ogive-nose projectile. The response process of projectile penetrating UR50 ultra-early-strength concrete target is simulated by LS-DYNA software, depth of penetration (DOP) and localized damage for the target obtained in simulation results are compared with experimental data, and the numerical results are in good agreement with experimental results. The effect of compressive strength and projectile strike velocity on DOP of UR50 ultra-early-strength concrete is then investigated using the validated finite element model. The Berezan empirical formulation is modified and validated based on numerical simulation data and experimental results, and the modified Berezan formulation is used to compare the anti-penetration performance of UR50 ultra-early-strength concrete with that of normal concrete (NC). The comparison results show that UR50 ultra-early-strength concrete has better penetration resistance than NC at low strength, and this advantage decreases with the increase of their compressive strength.