Fiber-Reinforced Concrete Properties and Performance
Summary
Fiber-reinforced concrete (FRC) integrates discrete fibres into a cementitious matrix to enhance tensile strength, ductility and crack control. Common fibre types include steel, polypropylene, glass and basalt, each offering distinct mechanical and durability profiles. Steel fibres contribute high post-crack load capacity and energy absorption, while synthetic polymers such as polypropylene provide shrinkage control and reduced crack widths at early ages. Glass fibres improve tensile and flexural performance but demand careful dosing and the use of plasticisers to maintain workability. Hybrid systems combining two or more fibre types can exploit complementary benefits, optimising toughness, impact resistance and long-term dimensional stability. FRC is employed in structural elements, pavements, seismic retrofits and precast components; it permits thinner sections, reduces reinforcement congestion and lowers life-cycle maintenance by mitigating micro-cracking and chloride ingress. Ongoing developments focus on sustainable sourcing of fibres, incorporation of recycled aggregates or industrial by-products, and tailoring fibre orientation and dosage through advanced mixing and casting techniques. A comprehensive understanding of fibre–matrix interfacial behaviour, rheology and durability under environmental stressors underpins global efforts to deploy FRC in resilient infrastructure and low-carbon construction.
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Fiber-Reinforced Concrete Properties and Performance publication trend
The graph below shows the total number of articles in fiber-reinforced concrete properties and performance across all publications each year (not limited to Nature Index journals).
Technical terms
Interfacial transition zone (ITZ): The microstructurally distinct region around fibres where cement hydration products and aggregate bind, crucial for bond strength and crack arrest.
Flexural toughness index: A measure of energy absorption capacity post-cracking, determined from the area under load-deflection curves in bending tests.
Workability: The ease with which fresh concrete can be mixed, placed and compacted, often quantified by slump and flow tests.
Crack-bridging mechanism: The ability of discrete fibres to span microcracks, transferring tensile stresses across openings and limiting crack propagation.
Shrinkage strain: Volumetric contraction of concrete due to moisture loss, which fibres can reduce by distributing tensile restraint and controlling crack widths.
References
- Research Progress on Fiber-Reinforced Recycled Brick Aggregate Concrete: A Review. Polymers (2023).
- Glass Fibers Reinforced Concrete: Overview on Mechanical, Durability and Microstructure Analysis. Materials (2022).
- Mechanical properties of fully recycled coarse aggregate concrete with polypropylene fiber. Case Studies in Construction Materials (2022).
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