The research on and development of basalt fibre and its composites are started in early 1980s, but, in the last 5 years, there is extensive research on mechanical properties and durability of basalt fibre-reinforced concrete (BFRC), basalt fibre-reinforced plastics (BFRP) and basalt fibre rebars (BR).
Fibres are used in concrete to improve its structural integrity. Nowadays, among all basalt fibres, an inert mineral fibre is gaining more importance due to its exceptional properties, which include resistance to corrosion and low thermal conductivity. It also improves tensile strength, flexural strength and toughness of concrete.
It can be used to extend the life of important concrete structures such as nuclear power plants, highways, bridges and runways. Basalt fibre in concrete is still an exploratory area due to limited studies. Therefore, a systematic study on basalt fibre-reinforced concrete was carried out with percentage volume fraction of fibre 0.50 (13.0 kg/m3), 0.75 (19.5 kg/m3) and 1.00 (26.0 kg/m3).
The increase in compressive, splitting tensile and flexural strength is in the order of 26.79, 42.71 and 44.06%, respectively, for 0.50% dosage of basalt fibre as compared to control concrete. In addition, basalt fibre is found to be amorphous and hydrophilic in nature.
S. K. Kirthika
S. K. Singh
© The Institution of Engineers (India) 2018