Abstract
This paper presents an experimental study on the influence of glass fibres on the mechanical behaviour of concrete with recycled concrete aggregates (RCAs). In the test programme, four concrete mixtures with coarse RCAs and glass fibres are manufactured. The used fibres are the CEM-FIL Minibars™ with a fibre content of 5 kg/m3, 10 kg/m3 and 15 kg/m3, respectively. The investigated properties are the compressive strength, the splitting tensile strength, the modulus of elasticity as well as the flexural behaviour. The latter is determined by the three-point bending test on concrete beams according to the standard EN 14651: 2005+A1:2007 – Test methodfor metallic fibre concrete: Measuring the flexural tensile strength (limit of proportionality (LOP), residual). Based on the test observations, it seems that the used glass fibres are able to improve the mechanical behaviour of recycled aggregate concrete (RAC).
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