Performance of Sustainable Nano Concrete

Abstract

Sustainable Nano concrete is a concrete having less energy consumption during the production and releases less carbon dioxide as compared to conventional concrete. About one ton of CO2 is discharged in the manufacture of one ton of Portland cement, thus having a large influence on global warming. The concrete industry is adopting sustainable technologies to diminish this impact. This paper presents the investigation on a sustainable concrete having Ground Granulated Blast Furnace Slag (GGBS), which is a byproduct of the steel industry, blended with Nano materials. Mechanical characteristics of concrete mixes having varying GGBS content (60%, 70%, and 80%) by weight of cement were investigated and compared with conventional concrete. To enhance the workability, compression strength, durability and early strength of GGBS based concrete, Nano silica, micro silica and calcium carbonate (CaCO3) were added to the concrete mix. It was found that concrete having 60% GGBS as replacement for cement exhibit improved mechanical properties. Also investigations were carried out on reinforced concrete beam with 60 % GGBS. Results indicate that concrete with 60 % GGBS could be used as a sustainable building material.