Secondary Natural Fibre-Reinforced Cementitious Composites: A Comprehensive Review

Construction activities use millions of tonnes of conventional, non-renewable building materials and release 30% of the world's CO2 emissions. Green building materials that are easily accessible, affordable, renewable, recyclable, and thus sustainable should be promoted in order to reduce these issues. The use of waste from secondary natural fibre (SNF) as a biological replacement for synthetic fibre in cementitious composites is reviewed in this research in light of recent trends. The varieties and classification of SNF, as well as its chemical make-up and physical and mechanical characteristics, were highlighted in the article. This study also discussed the mechanical, thermal, and durability characteristics of secondary natural fibre cementitious composites (SNFRC), as well as ways to enhance the durability of SNF in cementitious composites and new trends and applications for SNFRC. The report offered various areas for more research in SNFRC as a conclusion.