Evaluación de la resistencia a cortante de hormigones reforzados con fibras de poliolefina y acero

Abstract

• Recent research and applications have shown that fibre
reinforced concrete (FRC) is an attractive solution also for
structural elements [1]. The addition of fibres improves the
material response when subjected to bending and tensile
stresses [2]. The objective of this study was to assess the shear
behaviour of steel and polyolefin fibre reinforced concrete.
The experimental campaign was conducted using push-off
specimens obtained from the remaining halves of specimens
previously tested in flexural tensile tests. Moreover, the tests
were performed with a digital image correlation system (DIC)
in order to associate the cracking processes with residual shear
strengths during the test. The results showed that the higher
fibre dosage the higher maximum shear strengths as well as
residual shear load bearing capacity.