Influence of steel-polypropylene hybrid fibers on fatigue life of ultra-high performance concrete containing coarse aggregate subject to compressive cyclic loading

Key Points

• Enhanced fatigue life observed in ultra-high performance concrete under compressive cyclic loading.
• Concrete samples with hybrid fibers exhibit a fatigue life increase of up to 30% compared to standard mixes.
• Assessment involved compressive cyclic loading on fiber-reinforced concrete mixes with varying fiber ratios.
• The findings suggest improved durability for structural applications, indicating significant practical implications.