WSU graduate makes concrete more environmentally friendly

A Washington State University (WSU) graduate has discovered concrete can be made more environmentally friendly by replacing large amounts of cement in concrete with fly ash.

In a report by The Daily Evergreen, Sen Du, a doctoral student in the Department of Civil and Environmental Engineering, said using fly ash lowers the environmental impact of using concrete by reducing the need for cement production.

“Since the production of the cement can cause a lot of CO2 to enter our air, when we use the fly ash to replace cement, we can reduce the CO2 emissions, which is great for our environment,” he added.

Du was able to increase the amount of fly ash traditionally used by civil engineers from around 20% to 60% by adding nano-silica, which are nonparticles of silicon dioxide.

Source

 

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