Experimental study on effects of concrete properties by partially replacement of industrial waste : a green concrete

Abstract

Green concrete is concrete produced using waste materials obtained from various sources to develop an eco-friendly construction and reduce carbon emissions. The present experimental study is carried out to produce concrete using waste material from different industries to partially replace traditional concrete. Many research studies have been made using different waste materials which are available and useful as a replacement. The present study deals with industrial waste such as foundry sand (FS) and ground granulated blast furnace slag (GGBS) in the concrete so that the emission can be reduced and contribute to the environment. This study prepared two mixes for M35 Grade by replacing industrial wastes partially in the concrete mix. The first mix was prepared by partially replacing foundry sand with fine aggregates in proportions of 15%, 20%, 25% and 30%. The second mix was prepared by partially replacing the ground granulated blast furnace slag with cement in proportions of 30%, 40% and 50%. Test results were conducted to check the workability and compressive strength of the mixes prepared. These were then compared with the properties of conventional concrete at the end of 7 and 28 days. Test results indicate that 25% of FS and 30% of GGBS are the optimum percentages of industrial waste to use compared to conventional concrete properties at the end of 7 and 28 days. The present study also indicates the economic benefits of partially replacing the waste materials by reducing carbon emissions, and the study is beneficial to produce eco-friendly green concrete.