alexa Improvement of Torsional Resistance in Ultra-High Performance Fibre Reinforced Concrete Beams
ISSN: 2472-0437

Journal of Steel Structures & Construction
Open Access

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Research Article

Improvement of Torsional Resistance in Ultra-High Performance Fibre Reinforced Concrete Beams

Karim FR1*, Abu Bakar BH2 and Choong Kok Keong3

1PhD candidate, Universiti Sains Malaysia, School of Civil Engineering

2Prof. Dr. in School of Civil Engineering, Universiti Sains Malaysia

3Associated Prof.Dr in School of Civil Engineering, Universiti Sains Malaysia

 

Corresponding Author:
Ferhad Rahim Karim
School of Civil Engineering, Universiti Sains Malaysia
14300 Nibong Tebal, Seberang Perai
Pinang, Malaysia
Tel. 0060-(0)111-451-39-13
E-mail: [email protected]

Received date April 10, 2016; Accepted date May 26, 2016; Published date June 06, 2016

Citation: Karim FR, Abu Bakar BH, Choong Kok Keong (2016) Improvement of Torsional Resistance in Ultra-High Performance Fibre Reinforced Concrete Beams. J Steel Struct Constr 2:112. doi:10.4172/2472-0437.1000112

Copyright: © 2016 Karim FR, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

This research highlights the effect of concrete cover on the behavior of ultra-high performance fiber reinforced concrete rectangular solid beams under pure torsion. The main parameter in this research is the thickness of concrete cover which is varying between 21 and 52 mm. For this purpose, four under-reinforced ultra-high performance fibre reinforced concrete rectangular solid beams were cast and they were tested under pure equilibrium torsion. The test results verified that the torsional resistance at peak and crack loads were improved up to 113% and 134%, respectively, of the estimated value based on thin walled tube theory. Moreover, all of the twisting angle at ultimate load and shear strain in concrete were found to decrease up to 64.9%, 40.1%, respectively. In addition, both strain in longitudinal reinforcement and strain in stirrup were reduced up to 50%. The space truss analogy was modified to be compatible with this parameter effect. The modified model showed that it has a good agreement with test results.

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