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Fibre reinforced concrete (FRC) is now used in special structuressubjected to dynamic loads such as airport pavements, highways overlays, bridge decksand machine foundations.The cracking-related phenomena governing the fatigue of concrete underline thepotential benefit of the presence of fibres. Recent investigations have shown that thecombination of different fibre types (Hybrid Fibre Reinforced Concrete or HyFRC)provides a higher toughness. In a Hybrid system, microfibres provide reinforcementmechanisms at small to medium crack openings while macro-fibres would carry stressesacross cracks at medium to large crack openings.In this study the benefits caused by combination of micro and macro steel-fibres areevaluated under static and fatigue tests carried out on beams under four point bendingand on cylinders under direct tension. The results show the mixture of fibre permits amore effective control of the dynamic crack development.