The investigation presents an assessment of the mechanical and microstructural properties of basalt fiber reinforced concrete in addition to copper slag as partial replacement of fine aggregate. The basalt micro fibers are added at the volume fraction of 0.3, 0.6, 0.9, 1.2, 1.5 and 2% with copper slag as 40% replacement of fine aggregate in concrete. The influence of copper slag and basalt micro fibers in concrete has been examined under static loading condition which is considered to be a research gap in the study due to the limited investigations. Being the green material, copper slag and basalt fibers are considered to be an optimum combination for the concrete with low water cement ratio and increased mechanical performance of the concrete. The interfacial properties and hydration products have been investigated through Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray analysis (EDAX). The active chemical compounds, Morphology, Bond performance and failure pattern of fibers are observed from the microstructural studies. The optimum volume fractions of basalt fibers were examined to be 0.6% and 2% in the form of mono filament fibers depending on the nature of loading. The proposed concrete when compared to the plain concrete with and without copper slag showed predominant strength properties.