Study of fractured surfaces of concrete caused by projectile impact

Werner, Steve; Thienel, Karl‐Christian; Kustermann, Andrea

doi:10.1016/j.ijimpeng.2012.09.005

Cited by 31 publications

(14 citation statements)

References 4 publications

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“…The experimental study by Zhang et al (2005) reported that the inclusion of coarse granite aggregate (GA) into cement composites decreases the depth of penetration (DOP) as well as the equivalent crater diameter (CD). A similar phenomenon is also observed in (Werner et al, 2013;Wu et al, 2015b). Wu et al (2015a) investigated the influence of coarse aggregate type (basalt and corundum), size (65-75 mm, 35-45 mm, and 5-20 mm), and volume fraction (45% and 30%).…”

Section: Introductionsupporting

confidence: 84%

Influence of Calcined Bauxite Aggregate on the Resistance of Cement Composites Subjected to Small Caliber Deformable Projectile Impact

Zhang

Zhong

2021

Front. Mater.

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This paper presents an experimental investigation on the influence of calcined bauxite aggregate (CBA) on the resistance of cement composites subjected to small caliber deformable projectile impact at a designed velocity of 400 m/s. The deformable projectile was made from copper with a purity of 99.5% and a diameter of 8.0 mm. Compared to mixtures with conventional coarse granite aggregate and/or siliceous fine aggregate, the incorporation of either fine or coarse CBA or their combination is beneficial in reducing the depth of penetration (DOP), equivalent crater diameter (CD), and crater volume (CV) caused by deformable projectile impact. CBA is found to be more effective in controlling the DOP and CV in comparison to the CD. Replacing of conventional aggregate with CBA leads to more severe damage to the projectiles (e.g., projectile length reduction, diameter increase, and mass loss). Relative effective hardness is an effective indicator to the deformation potential and penetration capacity of a deformable projectile to impact cement composites incorporating CBA.

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Section: Introductionsupporting

confidence: 84%

Influence of Calcined Bauxite Aggregate on the Resistance of Cement Composites Subjected to Small Caliber Deformable Projectile Impact

Zhang

Zhong

2021

Front. Mater.

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“…For the pixel approach illustrated in Fig. 10(a), the crater areas denoted by Area 1 in Table 6 were obtained by measuring the ratio of pixels for crater and target, the details can be referred in [32]. For the equivalent diameter approach shown in were also given in Table 6.…”

Section: Targets Damagesmentioning

confidence: 99%

Projectile impact resistance of corundum aggregated UHP-SFRC

Fang

Gong

et al. 2015

International Journal of Impact Engineering

109

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“…HSC presented good resistance in terms of the residual velocity of the projectile due to the presence of coarse aggregate. Coarse aggregate is believed to improve the impact resistance of the concrete targets significantly [7,20]. Thus, residual velocity of the projectile after perforating HSC fell below the UHPFRC with 1.5% of fibre content.…”

Section: Resultsmentioning

confidence: 99%

Residual velocity of the non-deformable projectile after perforating the ultra-high performance fibre reinforced concrete

Sovják¹,

Vav²,

iník³

et al. 2014

WIT Transactions on the Built Environment

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This contribution is focused on the optimal fibre content in the ultra-high performance fibre reinforced concrete (UHPFRC) mixture with respect to the residual velocity of the non-deformable projectile after perforating the UHPFRC slabs. Impact velocity of the non-deformable projectile was in the range of 700 m/s. The UHPFRC used in this study exceeded 150 MPa in uniaxial compression and tensile strength was around 10 MPa. In total 24 UHPFRC slabs with different fibre content were tested for impact loading. In addition, 8 slabs were tested for comparison including high strength concrete (HSC) and conventional fibre reinforced concrete (FRC). It was verified experimentally that UHPFRC had an excellent impact resistance compared to conventional materials such as FRC or HSC. Further it was found that optimal fibre content in UHPFRC for impact resistant structures is 2% by volume. Usage of less than 2% of fibre concrete by volume led to higher residual velocity of the projectile after perforating the slab and also to higher debris fragment mass.

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Study of fractured surfaces of concrete caused by projectile impact

Cited by 31 publications

References 4 publications

Influence of Calcined Bauxite Aggregate on the Resistance of Cement Composites Subjected to Small Caliber Deformable Projectile Impact

Influence of Calcined Bauxite Aggregate on the Resistance of Cement Composites Subjected to Small Caliber Deformable Projectile Impact

Projectile impact resistance of corundum aggregated UHP-SFRC

Residual velocity of the non-deformable projectile after perforating the ultra-high performance fibre reinforced concrete

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