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  • Structural Concrete, Vol. 11, no. 3, September 2010

Structural Concrete, Vol. 7, no. 2, June 2006

Load-deflection performance of partially prestressed concrete T-beams with steel fibres in partial and full depth

J. Thomas, Indian Institute of Science, Bangalore, India
A. Ramaswamy, Indian Institute of Science, Bangalore, India

A total of twelve partially prestressed concrete T-beams were cast without and with fibres in partial and full depth. These beams were tested to assess the effect of fibre addition in different zones in the cross-section, namely, flange, web or the entire cross-section, on the load-deflection performance of the flexure critical beam specimens. An attempt has been made to predict the load-deflection characteristics of the beam specimens utilising the tension softening effects in the stress-strain behaviour of fibre-reinforced concrete. The proposed model accounts for the interaction of the matrix with the fibre pull-out mechanism. The details of the constitutive material properties used and the proposed layer-based analysis are presented in this paper. Comparisons with test data show good agreement. 

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