Influence of Basalt Fiber and Slag on the Moduli of Elasticity of Fine-Grained Concrete

Fine-grained concrete is the recent trend among civil engineering researchers due to its reduced density, quantity of material, and cost-effectiveness, as it aids in constructing complex and thin structures. It resembles mortar in appearance due to the absence of coarse aggregate. Concrete is generally brittle in nature, and its ductility is improved by adding reinforcements or fibers to the concrete. It is desired to study the elastic behavior of any material before applying it to the industry on a large scale. Absence of coarse aggregate and finer grain size of fine aggregate influences the nature of fine-grained concrete (FGC) from the other types of concrete, and it is desired to evaluate its elastic moduli. From this concern, the current study focuses on the moduli of elasticity of FGC with GGBS and basalt fiber. The static and dynamic moduli of elasticity of FGC are studied, and their correlation is reported. It is also compared with elastic modulus calculated from different codal provisions. The static modulus is lower than the dynamic modulus. Adding basalt fiber improves the ductile characteristics of fine-grained concrete but retards on GGBS addition due to the dilution effect of cement on greater percentages of replacement.