Failure characteristics of UHPFRC panels subjected to projectile impact

Beppu, Masatoshi; Kataoka, Shinnosuke; Ichino, Hiroyoshi; Musha, Hiroyuki

doi:10.1016/j.compositesb.2019.107505

Cited by 15 publications

(4 citation statements)

References 47 publications

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“…Extensive experiments and numerical simulation studies have been conducted on the impact resistance properties of ordinary concrete. However, relatively less research has been conducted on the penetration resistance of UHPC and rock [8][9][10][11][12][13]. Park et al [14] conducted experimental and numerical simulation studies on the penetration resistance of HPFRCC.…”

Section: Introductionmentioning

confidence: 99%

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Ning,

Ren,

Wang

et al. 2023

Materials

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Ultra-high-performance concrete (UHPC) is a cement-based material with excellent impact resistance. Compared with traditional concrete, it possesses ultra-high strength, ultra-high toughness, and ultra-high durability, making it an ideal material for designing structures with impact resistance. The research on the impact resistance performance of UHPC and its composite structures is of great significance for the structural design of protective engineering projects. However, currently, there is still insufficient research on the impact resistance performance of UHPC composite structures. To study the impact resistance performance, experiments were conducted on UHPC targets using high-speed projectiles. The results were compared with impact tests on granite targets. The results indicated that when subjected to projectile impact, the UHPC targets exhibited smaller surface craters compared with the granite targets, while the penetration depth was lower in the granite targets. Afterwards, the process of a projectile impacting the UHPC composite structure was numerically simulated using ANSYS 16.0/LS-DYNA finite element software. The numerical simulation results of penetration depth and crater diameter were in good agreement with the experimental results, which indicates the rationality of the numerical model. Based on this, further analysis was carried out on the influence of impact velocity, impact angle, and reinforcement ratio on the penetration depth of the composite structure. The results show that the larger the incident angle or the smaller the velocity of the projectile is, the easier it is to deflect the projectile. There is a linear relationship between penetration depth and reinforcement ratio; as the reinforcement ratio increases, the penetration depth decreases significantly. This research is of great significance in improving the safety and reliability of key projects and also contributes to the application and development of ultra-high-performance materials in the engineering field.

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Section: Introductionmentioning

confidence: 99%

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Ning,

Ren,

Wang

et al. 2023

Materials

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“…Benefitting from the aforementioned special mix design of the raw materials, UHPFRC has relatively high impact resistance. Recently, preliminary progress has been made in studying the dynamic mechanical performances of UHPFRC 10,11 . Significant research has been conducted to investigate the effects of fiber characteristics, including type, size, and content, on the mechanical properties of UHPFRC under dynamic compressive 12,13 and tensile loads, 14,15 including the dynamic strength, 16–20 peak strain, 13,21–23 and dynamic elastic modulus 24–26 .…”

Section: Introductionmentioning

confidence: 99%

“…Recently, preliminary progress has been made in studying the dynamic mechanical performances of UHPFRC. 10,11 Significant research has been conducted to investigate the effects of fiber characteristics, including type, size, and content, on the mechanical properties of UHPFRC under dynamic compressive 12,13 and tensile loads, 14,15 including the dynamic strength, [16][17][18][19][20] peak strain, 13,[21][22][23] and dynamic elastic modulus. [24][25][26] Besides, the variation patterns of dynamic behaviors of UHPFRC under varying strain rates have been extensively analyzed.…”

Section: Introductionmentioning

confidence: 99%

A novel damage evaluation method for ultra‐high‐performance fiber reinforced concrete under multiple impact loads

Shi,

Chen,

Ning

et al. 2023

Fatigue Fract Eng Mat Struct

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In this study, repeated compression tests were conducted for ultra‐high‐performance fiber reinforced concrete (UHPFRC) under three different impact pressures. Results showed that as the impact number increased, the strain rate approximately showed a proportional increase, and the plateau region of the dynamic stress–strain curve became more prominent. Besides, when the repeated impacts increased, the maximum strain and dynamic toughness both exhibited upward trends, while the peak stress decreased. The average toughness was positively correlated with the strain rate. Additionally, under high repeated impact loads, a single crack propagated rapidly within the UHPFRC specimen after single impact. Conversely, cracks propagated from the center to the periphery on the surface of the specimen when repeated loads were low. Furthermore, a quantitative evaluation method for the damage of UHPFRC under repeated impact loads was proposed based on the characteristic parameters of the gray‐level co‐occurrence matrix (GLCM).

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“…Ueno et al (Ueno et al, 2017) conducted projectile impact tests for a FRC slab mixed with PP fibers by using 46 g mass projectile, and they clarified high impact resistance of the FRC slab. Beppu et al (Beppu et al, 2020) conducted impact tests on ultra-high-strength fiber-reinforced concrete plates, and exhibited their high impact resistance. Almusallam et al (Almusallam et al, 2013) conducted impact tests for RC slabs mixed with PP and steel fibers, exhibiting that their spalling depth was identical regardless of the type of fiber, even though damaged area was decreased.…”

Section: Introductionmentioning

confidence: 99%

Local failure resistance of polypropylene fiber reinforced concrete plates subjected to projectile impact

Beppu

Mori

Ichino

et al. 2022

International Journal of Protective Structures

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This study investigated local failure characteristics of polypropylene fiber reinforced concrete (PPFRC) plates subjected to projectile impact. Flexural and compression tests for two types of PPFRC specimens (PPFRC1 and PPFRC2) were conducted to examine mechanical properties of the PPFRC. The average flexural strength of PPFRC1 and PPFRC2 at a strain rate of 10−1/s were 12.2 N/mm2 and 10.4 N/mm2, respectively. The average compressive strength of PPFRC1 and PPFRC2 at a strain rate of 100/s were 58 N/mm2 and 74.9 N/mm2, respectively. Projectile impact tests for 60 mm- and 80 mm-thick PPFRC plates were conducted by using a 50 g-mass projectile collided at velocities corresponding to 193–423 m/s. Experimental results exhibited that the PPFRC plate had a higher effect of suppressing local failure than a plain concrete plate. Comparison of the tests results with the modified NDRC formula revealed that the limit scabbing thickness was 15–20% smaller than that of a plain concrete plate.

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Failure characteristics of UHPFRC panels subjected to projectile impact

Cited by 15 publications

References 47 publications

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

A novel damage evaluation method for ultra‐high‐performance fiber reinforced concrete under multiple impact loads

Local failure resistance of polypropylene fiber reinforced concrete plates subjected to projectile impact

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