Influence Mechanisms of Aggregate Types and Steel Fibers on Impact Resistance of Ultra-High Performance Concrete

KANG Xuyang; WU Xiaogang; YU Jianyu; YANG Jianhui

doi:10.3724/j.gyjzG24062402

Volume 55 Issue 4

Apr. 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(4): 197-203

KANG Xuyang, WU Xiaogang, YU Jianyu, YANG Jianhui. Influence Mechanisms of Aggregate Types and Steel Fibers on Impact Resistance of Ultra-High Performance Concrete[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(4): 197-203. doi: 10.3724/j.gyjzG24062402

Citation:

KANG Xuyang, WU Xiaogang, YU Jianyu, YANG Jianhui. Influence Mechanisms of Aggregate Types and Steel Fibers on Impact Resistance of Ultra-High Performance Concrete[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(4): 197-203. doi: 10.3724/j.gyjzG24062402

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Influence Mechanisms of Aggregate Types and Steel Fibers on Impact Resistance of Ultra-High Performance Concrete

doi: 10.3724/j.gyjzG24062402

1. Henan Province Construction Investment Group Co., Ltd., Zhengzhou 450003, China;
2. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
3. Mingzhu Construction Group Co., Ltd., Yongkang 321300, China

Received Date: 2024-06-24
Available Online: 2025-06-07
Publish Date: 2025-04-01

Abstract

Abstract

To solve the defects of traditional ultra-high performance concrete （UHPC） with large self-shrinkage， several groups of UHPC specimens were prepared by mixing river sand （RS）， shale pottery （SP）， quartz sand （QS） and steel fibers （SF）. The influence rules of aggregates and SF on the physical and mechanical properties of UHPC were analyzed by testing of self-shrinkage， ultrasonic velocity， static and dynamic strengths. The results showed that the water absorption and water return properties exhibited by SP due to its porosity improved the internal conservation effect. The confining effect of SF could effectively reduce the self-shrinkage of UHPC and significantly improve its impact resistance. The dynamic peak stress and impact air pressure showed a linear relations， as did the relations between the dynamic intensity factor （DIF） and the strain rate. The damage variable， characterized by ultrasonic velocity， was also linearly related to the strain rate. Similarly， the damage factor remained linear with the number of impacts after multiple impacts.
- ultra-high performance concrete,
- shale pottery sand,
- steel fibers,
- self-shrinkage,
- SHPB impact,
- damage

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References(23)

References

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