Concrete is a fused construction material made up of aggregated crushed rocks, such as limestone or granite, cement and water. Researches add some additional materials to make the concrete improved in its properties, such as higher strength, electrical conductivity, etc.
Civil engineers of The Kansas State University used biofuel byproducts to develop an appropriate mix to reduce the carbon footprints from concrete and make it stronger.
Researchers took the byproducts obtained after biofuel production from plants and agricultural residues. It is different from traditional bio-ethanol. Cellulosic ethanol's byproducts contain high lignin residue in them, which are less valuable; whereas, the corn ethanol's byproducts can be used as cattle feed. When high lignin ash byproduct is added to the cement, the residual ash reacts with the cement and makes it stronger. They replace 20% of the cement with cellulosic material and after burning, the strength of the concrete gets increased by 32%. After reaping crops, the waste wheat straw and corn stover can be used for making cellulosic ethanol, and the byproducts obtained after ethanol production can be added to the cement to strengthen the concrete.