Natural Fiber Reinforcement in Cementitious Materials
Summary
Natural fibre reinforcement in cementitious materials encompasses the incorporation of plant-derived fibres such as jute, sisal, coconut and miscanthus into concrete and mortar matrices to mitigate inherent brittleness, enhance toughness and promote sustainability. These lignocellulosic elements act as crack arrestors and stress distributors, improving post-peak ductility, energy absorption and resistance to impact and shrinkage cracking. Fibre characteristics including length, diameter, aspect ratio and surface chemistry crucially influence fibre–matrix bonding and mechanical performance. Treatments such as alkali or silane applications remove surface impurities and modify cell wall constituents, thereby strengthening interfacial adhesion and durability. The global emphasis on reducing carbon footprint and utilising agricultural by-products has driven extensive research in this domain, yielding promising developments in green construction and eco-efficient composites.
Research from Nature Portfolio
Recent studies have demonstrated that mild alkali treatment of jute fibres can effectively control the hydration kinetics of cement paste, reducing setting delays and enhancing fibre–matrix compatibility. Analytical assessments indicate that surface modification minimises retardation of hydration reactions, optimises heat evolution profiles and improves mechanical integrity of the composite. These findings underpin the potential for tailored pre-treatment protocols to reconcile the reactivity mismatch between organic fibres and highly alkaline cementitious environments, establishing a roadmap for greener, fibre-reinforced cement systems.
Natural Fiber Reinforcement in Cementitious Materials publication trend
The graph below shows the total number of articles in natural fiber reinforcement in cementitious materials across all publications each year (not limited to Nature Index journals).
Technical terms
Cementitious materials: Composite binders whose hardening is largely due to hydration of cement.
Hydration kinetics: The rate and progression of chemical reactions between cement and water.
Fibre–matrix interface: The region of contact and interaction between reinforcement fibres and the cementitious binder.
Alkali treatment: Surface modification using alkaline solutions to remove impurities and enhance fibre adhesion.
Aspect ratio: The ratio of fibre length to its diameter, influencing mechanical reinforcement efficiency.
Tensile strength: The maximum stress a material can withstand while being stretched before failure.
References
- Effect of alkali-silica treatments of miscanthus fibres on chemical and micro-morphological modifications. Cleaner Materials (2023).
- Reinforcing the brittle resistance of high-strength concrete using agricultural waste fiber. Sustainable Structures (2024).
- Natural Cellulosic Fiber Reinforced Concrete: Influence of Fiber Type and Loading Percentage on Mechanical and Water Absorption Performance. Materials (2022).
- A mild alkali treated jute fibre controlling the hydration behaviour of greener cement paste. Scientific Reports (2015).
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