Impact Resistance of Fiber-Reinforced Concrete
Summary
Impact resistance in fibre-reinforced concrete refers to the capacity of a cementitious matrix fortified with discrete fibrous elements to withstand and dissipate sudden, high-intensity loads without catastrophic failure. Unlike static loading, impact events impose rapid strain rates that challenge the toughness and post-crack performance of standard concrete. The inclusion of steel, synthetic or carbon fibres alters crack initiation and propagation by bridging microcracks, promoting energy dissipation through pull-out and fibre rupture mechanisms. This synergy enhances ductility, toughness and residual strength, making fibre-reinforced systems ideal for protective structures, pavements subject to impact traffic and blast-resistant elements in civil and defence engineering. Testing methods commonly employ drop-weight apparatus, split Hopkinson bar experiments and pendulum impacts to quantify first-crack energy, failure energy and ductility indices. Recent advances have integrated ultra-high performance matrices and hybrid fibre blends to optimise the balance between workability, strength and impact resilience. Novel formulations now address environmental sustainability by incorporating recycled fibres and eco-efficient aggregates, broadening the global appeal of fibre-reinforced concrete in resilient infrastructure design.
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Impact Resistance of Fiber-Reinforced Concrete publication trend
The graph below shows the total number of articles in impact resistance of fiber-reinforced concrete across all publications each year (not limited to Nature Index journals).
Technical terms
Impact energy: The energy absorbed by a specimen from a drop-weight or projectile until first crack or failure.
Ductility index: Ratio of energy absorbed post-first crack to energy absorbed up to first crack, indicating ability to sustain deformation.
Weibull distribution: A statistical model used to describe variability and reliability of material failure under repeated impact.
Ultra-high performance concrete (UHPC): A class of advanced cementitious composites with exceptionally high strength and toughness due to fine particle packing and high fibre content.
Hybrid effect index: A quantitative measure of the synergistic performance gain from combining two or more fibre types in a concrete matrix.
References
- Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts. Materials (2018).
- Experimental Tests and Reliability Analysis of the Cracking Impact Resistance of UHPFRC. Fibers (2020).
- Impact Performance of Steel Fiber-Reinforced Self-Compacting Concrete against Repeated Drop Weight Impact. Crystals (2021).
- Eco-Efficient Fiber-Reinforced Preplaced Recycled Aggregate Concrete under Impact Loading. Infrastructures (2019).
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