ABSTRACT

This paper describes experimental investigations carried out on nine beams consisting of plain and fibre reinforced concrete (FRC) channels to serve as permanent formwork for beams. The channels provide skin reinforcement or surface reinforcement for flexural members.

A modified theory, based on load-slip curves obtained from the pullout tests on fibres, is presented for the analysis of such FRC covered plain and fibre reinforced concrete beams. The experimental and theoretically estimated values of ultimate loads show good agreement. The results also indicate the improved load carrying capacity with reduction in deflection and crack-width. Keywords: Beams, Ductility; Fibre Reinforced Concrete, Load Tests, Steel Fibres, Surface Reinforcement.