Title : FLEXURAL STRENGTH AND DUCTILITY CHARACTERISTICS OF MIXED FIBRE REINFORCED CONCRETE SPECIMENS
Authors : Urooj Masood, B L P Swami, A K Asthana
Publication : 8 - 10, October 2015
Volume : 1
Pages :
Price : 250
Abstract : It is found that the addition of glass fiber in certain percentage to steel fiber is resulting in optimum strengths in tension and flexure. The study of deflections has indicated that the presence of fibers not only has increased the flexural strength but also the deflections are controlled. The ultimate deflections recorded with various percentages are more compared to the reference specimens. The specimens with the fibers have more reserved strength even after the first crack showing the ductile behavior where as specimens without fiber have undergone a brittle failure at the instant of crack formation. The studies showed mixed fibers provide better properties in controlling cracks and higher strengths than reference specimen without fiber. In the present experimental investigation, glass and steel fibres were mixed by volume percentage in different proportions of 0-100, 25-75, 50-50, 75-25 and 100-0 in each of the total fibre percentages of 0.5, 0.75, 1.0 and 1.5 to prepare mixed fibre reinforced concrete (MFRC). Standard cylinder and beam specimens (prisms) were cast in M25 concrete, cured and tested for split tensile and flexural strengths. The percentages by volume of glass and steel fibres were varied as mentioned above. The influence of mixed fibre is discussed.