DUCTILITY RESPONSE OF HYBRID FIBRE REINFORCED CONCRETE BEAMS

Authors

  • Eswari Natarajan Pondicherry Engineering Colleg

DOI:

https://doi.org/10.4090/juee.2017.v11n2.174-179

Keywords:

Keywords, Ductility, Fibres, Flexure, Hybrid fibre reinforced concrete, Regression, Steel fibre reinforced concrete, Strength.

Abstract

Abstract: The effect of fibre content on the Strength and ductility behaviour of hybrid fibre reinforced concrete (HFRC) beams having different fibre volume fractions was investigated. The parameters of this investigation included service load, ultimate load, service load deflection, ultimate load deflection, crack width, deflection ductility and energy ductility. The fibre volume fraction (Vf) ranged from 0.0 to 2.0 percent. Steel and polyolefin fibres were combined in different proportions and their impact on the above parameters was studied. The ductile response of hybrid fibre reinforced concrete beams was compared with that of control beam. The test results show that addition of 2.0 percent by volume of hybrid fibres improve the strength and ductility appreciably. Empirical expressions for predicting the strength and ductility of hybrid fibre reinforced concrete (HFRC) are proposed based on regression analysis. A close agreement has been obtained between the predicted and experimental results.

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Author Biography

Eswari Natarajan, Pondicherry Engineering Colleg

civil engineering department

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Published

2018-06-27

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Section

Articles