Mechanical properties and Morphology of cement mortar containing nanoparticles

Abstract

In  this  article,  the   effects  of  two  nano-sized  powders  (nano-SiO₂ and  nano-Fe₂O₃)  on  the  compressive  strength,  tensile strength and  flexural strength of cement mortar were investigated. The results show that the mechanical properties of samples containing 1 and 3 percent nanoparticles are desirable then the ordinary cement mortar. But by increasing nanoparticles up to 5 percent, the mechanical properties reduce severely. However, SEM study about the microstructure of cement mortar containing nanoparticles and ordinary cement mortar showed that nanoparticles reduces the CaOH₂ crystals and fills the pores and increases the density of cement mortar.