Investigating the reliability of nano-concrete at different content of a nano-filler

Abstract

Owing to the exceptional characteristic features of substances at their nano-scale, the inclusion of nanoparticles in cementitious materials is being evolved as a potential phenomenon under investigation. The main purpose of this present research work is to examine the sustainability aspects of concrete that has been mixed with a nano-sized filler. Obviously, this study investigates the effect of magnesium oxide nanoparticles (nano-MgO) on the durability of structural concrete at different concentrations. Three distinct nano-MgO dosages such that 2 %, 4 %, and 6 % had been used. The intensity of moisture absorption, the number of cracks, the gross ruptured region per unit area, and the sorptivity of the nano-concrete samples have been determined to assess the reliability of concrete. The results indicate that whenever the nano-MgO percent of the nano-concrete is maintained within a certain limit of 4.0 %, the addition of nano-MgO would considerably boost its durability by improving inhibition to porosity and fracture. The durability of nano-concrete enhanced first and then decreased when the nano-MgO content increased over 4.0 %. The degree of moisture absorption of the typical cementitious material had been increased by 44.73 % with a 4 percent inclusion of nano-MgO. Similarly, with a 4.0 % nano-MgO inclusion, the total fracture region per unit area of nano-concrete was reduced by 82.70 percent. An overabundance level of nano-MgO may reduce overall durability of the nano-concrete. If the nano-MgO proportion was maintained at 4.0 %, then the nano-concrete has become more reliable.