Concrete has unique properties to make things in any shape. However, the strength of the concrete to support is weak in tension and good in compression. To improve the tension force carrying capacity, the concrete might get some fibrous material as additional reinforcement in concrete. This addition can improve the load-carrying capacity, uniform stress & strain distribution to the entire cross-section, good bonding of ingredients, etc. This research paper deals with glass and basalt fiber in mono and hybrid form in M30-grade concrete. The glass and basalt fiber of 1.5% volume fraction possesses good behaviour in mechanical properties tests in mono form. When it is hybridization, 0.75% of each fibers combination has good strength in mechanical properties. The compressive strength has been increased up to 11%, tensile strength capacity has been increased up to 12.5% and the modulus of rupture has been increased by about 17.4% due to the hybridization of fibers. Similarly, the static load proves the specimen with fibers has a better resistance against the applied load and has less deflection corresponding to the ultimate load. The stress-strain behaviour obeys Hook law. The durability behaviour of the concrete specimen also has been improved. The performance assessments taken into account for the hybrid fibre reinforced concrete mixes are as follows: modulus of rupture, flexural behaviour of beams, split tensile strength, acid, sulphate, and chloride attack resistance. These parameters assess the mechanical and durability properties of the concrete mixes.

Keywords: Glass fiber, Basalt fiber, Hybridization, Mechanical properties, Static load test, Durability properties, SEM analysis.