This study investigates the influence of basalt fibre incorporation on the mechanical and durability properties of high-strength self-compacting concrete (HSSCC). Basalt fibres, derived from natural volcanic rock, are eco-friendly and exhibit high tensile strength, chemical stability, and thermal resistance. The research aims to enhance the performance characteristics of HSSCC by incorporating basalt fibres at varying proportions of 0%, 0.25%, 0.5%, 0.75%, and 1% by volume of concrete. Experimental investigations were carried out to evaluate compressive strength, split tensile strength, flexural strength, and durability characteristics such as acid resistance and water absorption. Results indicate that the inclusion of basalt fibres significantly improves tensile and flexural strengths while enhancing the durability performance, particularly at an optimal dosage of 0.5%. Beyond this percentage, slight reductions in workability were observed. The findings suggest that basalt fibre-reinforced self-compacting concrete can serve as a sustainable material for high-performance structural applications.

1.Basalt fibre addition enhances both mechanical strength and durability of high-strength self-compacting concrete. 2.Optimal performance was observed at 0.5% basalt fibre dosage. 3.Fibre addition beyond 0.75% leads to reduced workability, requiring higher superplasticizer dosage. 4.Durability parameters such as acid resistance and water absorption significantly improved with basalt fibre inclusion. 5.Basalt fibre-reinforced HSSCC is a sustainable, eco-friendly, and high-performance construction material suitable for modern infrastructure.

1.EFNARC (2002), Specifications and Guidelines for Self-Compacting Concrete, European Federation of National Associations Representing for Concrete. 2.IS 10262:2019, Concrete Mix Proportioning – Guidelines, Bureau of Indian Standards. 3.IS 516:2018, Methods of Tests for Strength of Concrete, Bureau of Indian Standards. 4.Sim, J., & Park, C. (2005). Characteristics of basalt fibre as a strengthening material for concrete structures. Composites Part B: Engineering, 36(6–7), 504–512. 5.Ahmad, S. et al. (2020). Effect of basalt fibres on mechanical and durability properties of concrete. Construction and Building Materials, 235, 117436.