Due to rapid growth and development of construction industry, Portland cement is used as primary binding material. The main environmental issue connected with the production of ordinary portland cement is the emissions of carbon dioxide which is due to the combustion of fossil fuels and calcinations of lime stones. Reduction in the usage of portland cement will reduced the demand of portland cement hence reduction in the emissions of carbon dioxide will occur. Many researchers try to modify the concrete using subsidiary cementeneous materials which will be helpful for both environment and enhancing the strengthening properties of concrete. A number of R & D work dealing with the use of nano materials like Nano silica, colloidal Nano Silica (CNS), Al2O3, TiO2, ZrO2,Fe2O3, carbon nano tubes in cement based composite material are discussed in the present study. Based on the outcomes of the literature reviewed in the present study, it can be concluded that silica nanoparticle, when partial replaced with cement in small amount, has the ability to improve the mechanical properties of concrete.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.