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Concrete With Lower-Carbon Footprint Created From Biofuel Waste
Nathan / Clean Technica / March 19, 2013
A new form of concrete, stronger and with a lower carbon footprint, has been created by researchers utilizing some of the waste products of biofuel production. Concrete is an extremely widely-used material, and because of this has a rather significant carbon footprint, accounting for between 3-8% of global carbon dioxide emissions. The development of a concrete with a much lower carbon footprint could be significant.
“The idea is to use bioethanol production byproducts to produce a material to use in concrete as a partial replacement of cement,” said Feraidon Ataie, doctoral student in civil engineering. “By using these materials we can reduce the carbon footprint of concrete materials.”
Concrete is a mixture of three main components: portland cement, water, and aggregate. In order to cut back on the carbon footprint of concrete, the researchers from Kansas State University have been looking for environmentally friendly materials to replace the portland cement.
“It is predicted that bioethanol production will increase in the future because of sustainability,” Ataie said. “As bioethanol production increases, the amount of the byproduct produced also increases. This byproduct can be used in concrete.”