Flexural behaviour of steel fibre-reinforced concrete under cyclic loading
Flexural behaviour of steel fibre-reinforced concrete under cyclic loadingThis paper presents the results of cyclic loading tests on fibre-reinforced concrete (FRC). The main objectiveof this research is to evaluate simultaneously the influence of the workability, the steel fibres and the compressivestrength on the flexural behaviour of FRC under cyclic loading. Prismatic concrete specimens havingdimensions of 150*150* 700 mm were fabricated with concrete of various workability and differentcompressive strengths (30, 60 and 80 MPa) and reinforced with hooked end steel fibres of aspects ratios of65 and 80 at contents of 0.5 and 1%. A four-point bending test with notched specimens was conducted usingDigital Image Correlation technique. The orientation of the fibres, failure modes,…
Flowability of fibre-reinforced concrete and its effect on the mechanical properties of the material
Flowability of fibre-reinforced concrete and its effect on the mechanicalproperties of the materialAbstract
Fibre distribution is an important factor, affecting both the fresh- and hardened-state properties of concrete.The paper describes a study in which the fibre distribution and orientation were investigated bymeans of a suitable technique, by using a translucent fluid model with a yield stress (Carbopol 940).The observation confirmed the ability of the developed method to provide data on the orientation anddistribution of steel fibres within concrete. It was showed that orientation and distribution are dependenton the yield stress of the fluid material. Concrete specimens, containing 0.5% of 35 mm long hooked steelfibres, were also cast and tested under four-point loading,…