Influence of Nano-Materials on Mechanical and Permeation Characteristics of High Strength Concrete

Abstract

Efforts have been made to evaluate the influences of the addition of nanoparticles on the strength, durability and mineralogical changes of high strength concrete (HSC). Therefore, mixes were prepared for conventional concrete mix (CCM) of M80 grade. Further, various mixes were prepared by replacing cementitious materials initially with 1% Nano-CaCO₃ (NC), 2% NC, 3% NC in the CCM, and then 1% NC and Nano-SiO₂ (NS) NS, 2% NC and NS, 3% NC and NS (NC and NS were in equal proportion) in the CCM. The developed concretes were then evaluated for mechanical properties, permeation characteristics, and mineralogical studies. From the studies, it is found that the concrete at 2% NCS possesses superior mechanical and superior permeation characteristics of all the mixes. A clear variation in the mineralogical structure with the addition of nanoparticles has been observed.

Keywords

high strength concrete / nano silicon dioxide / nano calcium carbonate / mechanical properties / permeation properties

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