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WANG Yichao, WU Pingfei, YU Jiangtao, ZHANG Yao, XIE Xingxing. Dynamic Tensile Properties of Ultra-High Ductile Concrete Under Different Strain Rates[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20240264

Citation:

WANG Yichao, WU Pingfei, YU Jiangtao, ZHANG Yao, XIE Xingxing. Dynamic Tensile Properties of Ultra-High Ductile Concrete Under Different Strain Rates[J].Journal of Southwest Jiaotong University.doi:10.3969/j.issn.0258-2724.20240264

Citation:

WANG Yichao, WU Pingfei, YU Jiangtao, ZHANG Yao, XIE Xingxing. Dynamic Tensile Properties of Ultra-High Ductile Concrete Under Different Strain Rates[J].Journal of Southwest Jiaotong University.doi:10.3969/j.issn.0258-2724.20240264

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Dynamic Tensile Properties of Ultra-High Ductile Concrete Under Different Strain Rates

doi:10.3969/j.issn.0258-2724.20240264

1.
Key Laboratory of Roads and Railway Engineering Safety Control, Ministry of Education, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
2.
College of Civil Engineering, Tongji University, Shanghai 200092, China

Received Date:31 May 2024
Rev Recd Date:05 Nov 2024

Available Online:21 Oct 2025

Abstract

Abstract

Ultra-high ductile concrete (UHDC) has excellent strain hardening and multi-cracking characteristics, and it has great potential in impact load resistance. Direct tensile tests were conducted under 11 strain rates (0.000 1– 189.0700 s⁻¹) ranging from quasi-static to impact states to investigate the strain rate effect on the tensile properties of UHDC. The influence of strain rate on the shape of the tensile stress–strain curves, cracking pattern, and tensile performance indicators of UHDC was analyzed. The expression of the dynamic increase factor of tensile performance indicators regarding strain rate was established. In addition, the influence of the tensile rate on the fiber–matrix interface bonding performance was analyzed to further explain the strain rate effect on the tensile properties of UHDC. The results show that the deformation capacity of UHDC decreases with the increase in strain rate. When the strain rate is 102.000 0 s⁻¹, UHDC still has significant strain hardening and multi-cracking pattern capacity, with the tensile strain capacity up to 4%. The average crack width, which keeps a constant value of 100 μm, does not vary with the strain rate change, exhibiting the excellent crack control capacity of UHDC. The relationship curves between the dynamic increase factor of the tensile performance indicators and strain rate show a clear two-stage characteristic.
- ultra-high ductile concrete,
- strain rate,
- tensile property,
- dynamic increase factor,
- interface bonding performance

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References (29)

References

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Dynamic Tensile Properties of Ultra-High Ductile Concrete Under Different Strain Rates

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