A comprehensive review on carbon free construction materials.

The construction industry is booming day by day, and it is good for stakeholders like engineers, architects, contractors, material manufacturers, and suppliers. But it creates negative to environment. Globally, construction materials are responsible for 39% of greenhouse gas (GHG) emissions. Due to the emission of greenhouse gases, the change in climate, global warming, melting of glaciers, and rising sea level are the major issues related to the environment. 100% of this is harmful. In all the global-level meetings, one important parameter is being discussed: carbon-free earth and carbon credits. Carbon credit is either the prevention of carbon emissions or the reduction of carbon emissions. These carbon emissions in construction can be reduced with the help of carbon-free construction materials like bamboo, lime, biochar, ceramic powder, fly ash, crumb rubber, and recycled aggregates. Reducing and replacing conventional materials with these less carbon materials will control carbon emissions to a significant level. A lot of research is done in this area to initiate the reduction of carbon emissions. The present work discusses the various materials, along with their properties and their effects on concrete that can be used to achieve carbon-free sustainable construction practices. [ABSTRACT FROM AUTHOR]