As a construction material, most commonly used material all over the world is concrete which is produced by Ordinary
Portland cement and aggregates mixed with water. OPC is the most widely used binder material in concrete. The amount of OPC
approximately present in concrete is 10% - 20% by mass of concrete. Production of OPC is creating the environmental problems
over the decades.
The production of Portland cement worldwide is increasing 9% annually. Portland cement produces almost 1.5 billion tones of
greenhouse gas annually or about 7% of total greenhouse gas emissions to the earth’s atmosphere. Approximately to produce 1
ton of OPC 1 ton of CO2 is released to the environment. Due to this environmental issue, research on alternative binder material
evolved.
It is important to find an alternative material which will liberate less carbon to atmosphere than cement. Industrial waste
products like Fly ash and GGBS can be converted in to concrete through Geopolymer.
