Rubberized Concrete Materials and Mechanical Properties
Summary
Rubberized concrete incorporates recycled tyre rubber—typically in the form of crumb rubber—into conventional cementitious mixtures as a partial replacement for fine or coarse aggregates. Driven by environmental imperatives to divert end-of-life tyres from landfill, this approach also seeks to harness the intrinsic elasticity, damping capacity and low thermal conductivity of rubber. Mechanically, the inclusion of rubber particles often reduces compressive strength and elastic modulus in proportion to rubber content, while enhancing ductility, fracture energy and impact resistance. Performance can be tuned through particle size, replacement ratio, pre-treatment methods and admixture selection. Advances in mix design have enabled specialised applications such as self-compacting rubberized concrete, pervious mixes and hybrid composite columns. Treatment of rubber surfaces—via simple water soaking, chemical agents or coupling agents—improves interfacial bonding and mitigates strength loss. Globally, rubberized concrete is gaining traction for non-load-bearing elements, railway sleepers, protective barriers and energy-absorbing structures, offering a route to both waste valorisation and tailored mechanical performance.
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Rubberized Concrete Materials and Mechanical Properties publication trend
The graph below shows the total number of articles in rubberized concrete materials and mechanical properties across all publications each year (not limited to Nature Index journals).
Technical terms
Crumb rubber: Granulated particles derived from recycled tyre material, used to replace natural aggregates in concrete.
Self-compacting concrete: A highly flowable mixture that spreads under its own weight without segregation or external vibration.
Compressive strength: The maximum axial load per unit area that a material can withstand under crushing.
Flexural strength: The ability of a material to resist deformation under bending stress.
Modulus of elasticity: A measure of stiffness, indicating the ratio of stress to strain in the elastic deformation region.
Interfacial transition zone (ITZ): The microstructural region around aggregate particles where cement paste properties differ from the bulk mortar.
References
- Review on the characteristic properties of crumb rubber concrete. Cleaner Materials (2024).
- A state-of-the-art review on recycling rubber in concrete: Sustainability aspects, specialty mixtures, and treatment methods. Developments in the Built Environment (2023).
- Practical Rubber Pre-Treatment Approch for Concrete Use—An Experimental Study. Journal of Composites Science (2021).
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