Ductility of Ultra-High Performance Concrete and its Correlation with Tensile Strength Increase

B.I. Bae; Hyun Ki Choi; Chang Sik Choi

doi:10.4028/www.scientific.net/KEM.665.21

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 665Ductility of Ultra-High Performance Concrete and...

Ductility of Ultra-High Performance Concrete and its Correlation with Tensile Strength Increase

Abstract:

In this study, ductility of members with ultra-high performance concrete was investigated using moment-curvature analysis for the verification of safety under large deformation of ultra-high performance concrete structural members. For the analysis of members with ultra-high performance concrete, mathematical stress-strain model was selected among the results conducted by other researchers on the compressive and tensile behavior of high strength concrete and fiber reinforced concrete. According to the investigation on ductility of members with ultra-high performance concrete, decrease of ductility was observed with increase of tensile strength of concrete under the same reinforcement ratio. Members with 2~3% of reinforcement ratio, which usually be used in the field engineering, show the decrease of ductility with increase of fiber volume fraction. As a results of parametric study, limitation of maximum reinforcement ratio ( or limitation of net tensile strain ) suggested by current design code is not safe when using ultra-high performance concrete.

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Periodical:

Key Engineering Materials (Volume 665)

Pages:

21-24

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.665.21

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Online since:

September 2015

Authors:

B.I. Bae*, Hyun Ki Choi, Chang Sik Choi

Keywords:

Ductility, Moment Curvature Analysis, Reinforcement Ratio, Stress-Strain Relation, Tensile Strength, Ultra-High Performance Concrete

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References

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DOI: 10.4028/www.scientific.net/kem.577-578.17

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