Studies on Concrete Properties Using Nano Titanium Dioxide

Abstract

Recently, nanotechnology has garnered considerable scientific attention owing to its novel applications in particles on the nanometer (10-9 m), as nanoscale particles exhibit significantly improved properties compared to materials with predictable grain sizes and the same chemical composition. Several researchers have recently developed cement-based materials incorporating nanoparticles to increase their durability or impart desirable properties. Because of its chemical stability and high catalytic activity, the incorporation of nano titanium dioxide into cement- based materials has attracted considerable interest. newlineThis study aimed to investigate the properties of concrete containing various percentages of NT, such as the fresh properties, mechanical properties, durability, and microstructural properties. Workability, strength tests (compressive, split tensile, and flexural strength), sorptivity, water absorption, apparent porosity, UPV test, rapid chloride penetration test, permeability, half-cell potential test, drying shrinkage, SEM, and EDS analysis tests were carried out. A steady- state diffusion test, which relied on ASTM C1202 and Nordtest Build 492, was conducted to understand the diffusion of chloride ions. The diffusion coefficients were calculated using the Nernst-Einstein and Nernst-Plank equations. newlineAt the end of this study, we can conclude that there is a need for the incorporation of novel materials such as NT into cement-based materials as they can improve the strength and durability of structures, thus reducing their maintenance and repair costs by improving the overall performance of cementitious composites. newline newline