Experimental Investigation On Reinforced Concrete Beam With Nano Silica And Polyvinyl Alcohol Fiber

This experimental study investigates the combined effect of Nano Silica (NS) and Polyvinyl Alcohol (PVA) fiber in M30 grade concrete. In this study, the structural behaviour of reinforced concrete beams were studied through load–deflection testing. The behaviour of conventional concrete beam was compared with beam containing Nano Silica and Polyvinyl Alcohol fibers to evaluate the influence of the modified concrete on structural performance, crack development, and deformation characteristics. Nano Silica was used as a partial replacement for cement at 2% by weight, while Polyvinyl Alcohol fiber was added as 0.5% by volume of concrete. In addition, the performance of the modified concrete was evaluated through various durability tests to assess resistance against environmental effects. Microstructural characteristics of the material were examined using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) analysis to understand the morphology and elemental composition.