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Flexural Behaviour of Mono Fibre and Hybrid Fibre Reinforced Concrete using Steel and Nylon


Jyothis Jose Oommen , Mar Baselios College of Engineering and Technology; Tom George, Mar Baselios College of Engineering and Technology


Civil Engineering, Concrete, Fibres, Flexure, Hybrid, Steel-Nylon, Structural Engineering


This paper presents an experimental study on the effect of hybrid fibre addition to M40 concrete mix using the steel-nylon hybrid fibre reinforced system. The study is done by comparing the flexural behaviour of reinforced concrete beams without fibres, with steel fibres, with nylon fibres and with hybrid fibre combination of steel and nylon. M40 grade concrete was designed as the control mix. The main variables considered were the volume fraction of crimped steel fibres and nylon fibres. The mechanical properties of the mono fibre reinforced cast specimens were tested at four different volume fractions of fibre content i.e., 0.5%, 1.0%, 1.5% and 2.0%. The optimum volume fraction of steel fibre addition was obtained as 1.5% and that of nylon fibre addition was obtained as 1%. Hybrid combinations of 1.5% by volume of steel fibre along with various volume fractions of nylon fibre, such as 0.1%. 0.15%, 0.2%, 0.25% and 0.3%, were cast in order to find the optimum percentage of the hybrid steel-nylon fibre combination. An optimum of hybrid combination of 1.5% steel with 0.2% of nylon was obtained. A total of 12 reinforced concrete beams were cast and tested. After conducting flexural strength test on the beams, the first crack load, deflection pattern, crack development pattern and ultimate load carrying capacity of the beams were studied and compared.

Other Details:

Manuscript Id :IJSTEV2I3049
Published in :Volume : 2, Issue : 3
Publication Date: 01/10/2015
Page(s): 108-117
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