Scientists Use Shrimp Shell Nanoparticles to Strengthen Cement.
Aug 3 2022Reviewed by Alex Smith When shrimp shell nanoparticles were mixed into cement paste, the material became substantially stronger — researchers propose an innovation that could lead to less seafood waste and fewer carbon dioxide emissions from concrete production.
The concrete industry is under pressure to reduce its carbon emissions from the production of cement. By developing these novel admixtures that enhance the strength of concrete, we can help reduce the amount of required cement and lower the carbon emissions of concrete.Concrete is used in vital infrastructure like buildings, bridges, and roads all over the world. It is the second most used material on the planet after water.
In the meantime, seafood waste is a major issue for the fishing industry, which produces between 6 million and 8 million pounds of waste per year globally. According to Hui Li, research assistant professor in WSU’s Composite Materials and Engineering Center and corresponding author on the paper, the majority of that waste is thrown into the sea.
“Being able to control the charge on the surface is an important piece to controlling how they function in cement. We could do that quite simply on the chitin because of the carboxyl group that sits in the chitin polymer,” said WSU Regents Professor Michael Wolcott, a corresponding author of the paper.
They were able to enhance and target the cement’s properties, such as its uniformity, setting time, resilience, and sturdiness, by adding processed nanocrystals of chitin to it. They discovered a 40% rise in the strength of the concrete’s bending capacity and a 12% increase in its ability to compress.
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