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논문 기본 정보

자료유형
학술저널
저자정보
Doaa Talib Hashim (Mustansiriyah University) Farzad Hejazi (University Putra Malaysia) Voo Yen Lei (University of New South Wales)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.14 No.5
발행연도
2020.9
수록면
791 - 811 (21page)

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초록· 키워드

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In this study, several simplified constitutive models and a damage plasticity model for ultra-high performance fiber reinforced concrete(UHPFRC)material with micro and hooked ends steel fibers, Bekaert Dramix 5D steel fiber, and Forta-Ferro synthetic fiber had been developed. Later, these constitutive and damage plasticity models were applied as analytical model to numerically simulate the concrete members with different fibers, and to evaluate the behavior of the concrete sections. The constitutive models for UHPFRC of three mix designs were obtained experimentally by conducting uniaxial compression and tensile tests on both cylinder and dog-bone specimens. Next, a comparison was made among the three mix designs based on the outcomes retrieved from uniaxial compression and tensile stress–strain. These results were validated by numerically analyzing three hollow circular columns via finite element method. The numerical results revealed that the proposed material model possessed appropriate tensile strainhardening behavior and uniaxial compression strengths of UHPFRC with different types of fiber. The lateral resistance responses of the tested hollow sections, which were obtained by using developed constitutive and damage plasticity models, displayed exceptional agreement with the experimental outcomes.

목차

Abstract
1. Introduction
2. Development of Constitutive Model
3. Materials and Mix Design
4. Specimen Preparation and Experimental Setup
5. Constitutive Model and Damage Plasticity of UHPFRC with Different Types of Fiber
6. Results and Discussion
7. Developed Constitutive Model of UHPFRC with Different Types of Fiber
8. Verification of the Developed Constitutive Models
9. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2020-532-001290752