Investigation the Effect of Different Nano Materials on the Compressive Strength of Cement Mortar

摘要

In the present study, the compressive strength assessments of cement mortar containing different amounts of ZrO2, SiO_2, Al_2O_3 and CaCO_3 nanoparticles have been investigated. Four different contents for each nanoparticles type were utilized as a partial replacement of cement 1%, 1.5%, 3% and 5% by the cement weight. The compressive strength was estimated for two ages (7) and (28) days. The end results manifested that the specimens' compressive strength enhanced via the addition of the nanoparticles of ZrO_2 and SiO_2 to the paste of cement till 3.0% and then decreased but remained greater than the reference mix. While, the compressive strength of specimens enhanced via the addition of the nanoparticles of Al_2O_3 and CaCO_3 ZrO2 up to 5%. Maximum compressive strength recorded was 42.5 MPa for mixes with 3% nano SiO_2 followed by 38 MPa, 37 MPa and 33.5 MPa for mixes with 4% nano Al2O_3, 3% nano and ZrO2 and 4% nano CaCO_3, respectively.