Utilisation of natural fibre as modifier in bituminous mixes: A review

•Papers on natural fibres in asphalt concrete was reviewed.•Natural fibres can replace synthetic fibres.•Reinforcement with natural fibres improves the asphalt properties.•Natural fibres can improve resistance to pavement distress.•Research focus is on fibre content, length and effect of binder content on fibre parameter. This paper provides a review on the utilisation of natural fibre as modifier in bituminous mixes. Increase in traffic loads in terms of number of axles and high tyre pressure from heavy vehicles resulted into traffic-related pavement distresses. Modification of asphalt binder is one of the approaches to improve pavement performance. Natural fibres have become a research focus for scientist and engineers. Types of natural fibres, their surface treatment and reinforcement of asphalt concrete with natural fibres are presented. Generally, the review demonstrated an improvement in fatigue life and structural resistance to distresses occurring in pavement when modified.