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Concrete Strengthened with Agriculture Waste Products

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Corn stover, wheat straw and rice straw are waste products of agriculture used as biofuels. The high-lignin ash left over from burning them is being used by researchers at Kansas State University to make concrete stronger and more eco-friendly. The researchers use the byproduct to replace 20% of the portland cement by mass and in doing so make the cement 32% stronger.

Source: April 16 AGC SmartBrief e-newsletter which contained this April 15 article in Design News.
 

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