Effect of Corundum and Basalt Aggregates on the Ballistic Resistance of UHP-SFRC

Crystals

Přemysl Kheml¹  Radoslav Sovják¹  Jindřich Fornůsek¹  Kristýna Carrera¹  Michal Mára¹ 

[1] Faculty of Civil Engineering, Czech Technical University in Prague, 166 29 Prague, Czech Republic;

关键词: penetration resistance;    projectile impact;    high-speed loading;    ballistic resistance;    UHP-SFRC;    corundum;   

DOI  :  10.3390/cryst11121529

来源: DOAJ

【 摘 要 】

Ultra-high-performance steel-fibre-reinforced concrete (UHP-SFRC) is a technologically advanced composite with a high ability to absorb and dissipate mechanical energy. This work investigates the possibility of increasing ballistic resistance by adding different percentages of corundum and basalt aggregate into this type of concrete. The most common type of ammunition, a 7.62 mm × 39 mm calibre with a full-metal jacket and a mild-steel core (FMJ-MSC), was used to test all samples. The size of the damage and the mode of failure were determined using a 3D scanner operating on the principle of photogrammetry. The experimental campaign showed that the addition of basalt and, especially, corundum aggregate has a positive effect on ballistic resistance. In particular, the increase in compressive strength and the slight decrease in depth of penetration (DOP) was observed in the case of the usage of the corundum aggregate.

【 授权许可】

Unknown